The Laramide Example Announcing a New ZEISS-GSA Research Grant

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Fate of the Lower Lithosphere during Shallow-Angle Subduction: The Laramide Example Announcing a new ZEISS-GSA Research Grant. THE FUTURE OF GEOSCIENCE HAS NEVER LOOKED LARGER

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Details and application form: www.geosociety.org/ZEISS JANUARY 2020 | VOLUME 30, NUMBER 1 SCIENCE 4 Fate of the Lower Lithosphere during Shallow- Angle Subduction: The Laramide Example GSA TODAY (ISSN 1052-5173 USPS 0456-530) prints news Alan D. Chapman et al. and information for more than 22,000 GSA member readers and subscribing libraries, with 11 monthly issues (March- Cover: Field photograph showing subrounded garnet-clinopyroxenite April is a combined issue). GSA TODAY is published by The xenoliths in host latite ~10 km east of Chino Valley, Arizona. Pen is Geological Society of America® Inc. (GSA) with offices at 3300 Penrose Place, Boulder, Colorado, USA, and a mail- 14 cm long. These xenoliths represent fragments of Southern Califor- ing address of P.O. Box 9140, Boulder, CO 80301-9140, USA. nia lower crust and upper mantle displaced ~500 km inboard during GSA provides this and other forums for the presentation Laramide shallow-angle subduction. See related article, p. 4–10. of diverse opinions and positions by scientists worldwide, regardless of race, citizenship, gender, sexual orientation, religion, or political viewpoint. Opinions presented in this publication do not reflect official positions of the Society. © 2020 The Geological Society of America Inc. All rights reserved. Copyright not claimed on content prepared wholly by U.S. government employees within the scope of their employment. Individual scientists are hereby granted 11 GSA Adopts New Code of Ethics & Professional Conduct permission, without fees or request to GSA, to use a single figure, table, and/or brief paragraph of text in subsequent work and to make/print unlimited copies of items in GSA 12 GSA 2019 Annual Meeting & Exposition Wrap-Up TODAY for noncommercial use in classrooms to further education and science. In addition, an author has the right 13 Thank You Sponsors to use his or her article or a portion of the article in a thesis or dissertation without requesting permission from GSA, provided the bibliographic citation and the GSA copyright 14 Final Call: Award & Nomination Deadlines credit line are given on the appropriate pages. For any other use, contact [email protected]. 15 Call for Nominations: GSA Scientific Division Awards Subscriptions: GSA members: Contact GSA Sales & Service, +1-888-443-4472; +1-303-357-1000 option 3; gsaservice@ 20 2020 Graduate Student Research Grants geosociety.org for information and/or to place a claim for non-receipt or damaged copies. Nonmembers and institutions: GSA TODAY is US$105/yr; to subscribe, or for claims for 20 Call for GSA Fellowship Nominations non-receipt and damaged copies, contact gsaservice@ geosociety.org. Claims are honored for one year; please 20 Travel Awards to the 2020 Southeastern-Northeastern Joint Section Meeting allow sufficient delivery time for overseas copies. Peri- odicals postage paid at Boulder, Colorado, USA, and at additional mailing offices. Postmaster: Send address 21 J. David Lowell Field Camp Scholarships changes to GSA Sales & Service, P.O. Box 9140, Boulder, CO 80301-9140. 21 GSA-ExxonMobil Bighorn Basin Field Award GSA TODAY STAFF Executive Director and Publisher: Vicki S. McConnell 22 GSA GeoCorpsTM America Program Science Editors: Mihai N. Ducea, University of Arizona, Dept. of Geosciences, Gould-Simpson Building, 1040 E 4th 22 National Park Service Geoscientists-in-the-Parks (GIP) Opportunities Street, Tucson, Arizona 85721, USA, [email protected] .edu; Peter Copeland, University of Houston, Department of Earth and Atmospheric Sciences, Science & Research 24 Call for Committee Service Building 1, 3507 Cullen Blvd., Room 314, Houston, Texas 77204-5008, USA, [email protected]. 28 Welcome New GSA Members Member Communications Manager: Matt Hudson, [email protected] 33 2020 Section Meetings Calendar Managing Editor: Kristen “Kea” Giles, [email protected], [email protected] 34 GeoCareers Programs at the 2020 Section Meetings Graphics Production: Emily Levine, [email protected] Advertising Manager: Ann Crawford, 36 Geoscience Jobs & Opportunities +1-800-472-1988 ext. 1053; +1-303-357-1053; Fax: +1-303-357-1070; [email protected] 39 Groundwork: Recent Digital Technology Trends in Geoscience Teaching and GSA Online: www.geosociety.org Practice GSA TODAY: www.geosociety.org/gsatoday Printed in the USA using pure soy inks. 42 Groundwork: Academic Program Prioritization: An Existential Threat to Geoscience Departments

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47 Call for Proposals: GSA 2020 Annual Meeting & Exposition Fate of the Lower Lithosphere during Shallow-Angle Subduction: The Laramide Example

Alan D. Chapman, Ojashvi Rautela, Geology Dept., Macalester College, St. Paul, Minnesota 55105, USA; Jessie Shields, Department of Earth and Environmental Sciences, California State University, Fresno, California 93740, USA; Mihai N. Ducea, Dept. of Geosciences, University of Arizona, Tucson, Arizona 85721, USA, and Faculty of Geology and Geophysics, University of Bucharest, 010041, Bucharest, Romania; and Jason Saleeby, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA

ABSTRACT abundance of spinel peridotite xenoliths in and Shatsky conjugates, which were em- Continental arc lower crust and underly- ca. 15 Ma and younger volcanic host rocks bedded in the Farallon plate as they sub- ing mantle wedge assemblages native to the and the presence of a vertical high-seismic- ducted in Laramide time (Saleeby, 2003; Mojave Desert were dislodged, transported velocity anomaly beneath the western Liu et al., 2010). The damage zone con- eastward during Laramide shallow-angle Colorado Plateau suggest that arclogite has sists of the southern California batholith subduction, and attached to the base of the been foundering into the mantle and being (SCB) of the Mojave Desert and the south- Colorado Plateau transition zone (central replaced by upwelling asthenosphere since ernmost Sierra Nevada batholith (SNB; Arizona, USA) and further inboard. We the early Miocene. Fig. 1, inset). identify here two late Oligocene xenolith As emphasized below, the impact of oce- localities from the transition zone (Camp INTRODUCTION AND anic plateaux is consistent with evidence Creek and Chino Valley) that likely contain BACKGROUND for the shutdown of arc magmatism, deep remnants of the missing Mojave litho- crustal exhumation, tectonic underplating sphere. Geochemical, isotopic, and ther- The SW North American Cordillera of trench sediments, and—the focus of this mobarometric data from garnet clinopy- The Laramide orogeny was a regional research—removal of the LC-SCML (e.g., roxenite, the dominant xenolith type at compressional event that evolved from Saleeby, 2003; Luffi et al., 2009; Chapman both studied localities, strongly suggest a Late Cretaceous–early Paleogene contrac- et al., 2012; Chapman, 2017; Ducea and continental arc residue (“arclogite”) rather tion of the SW margin of North America Chapman, 2018). than a lower plate subduction (“eclogite”) to Eocene–early Oligocene deformation origin. Zircon grains extracted from these up to 2,000 km inboard in the craton inte- Overview of the SCB Domain of the nodules yield a bimodal age distribution rior (Saleeby, 2003; DeCelles, 2004; Laramide Corridor with peaks at ca. 75 and 150 Ma, overlap- Copeland et al., 2017). A commonly cited The formerly contiguous SNB–SCB– ping ages of continental arc magmas mechanism for the orogeny is intensified Peninsular Ranges batholithic belt was a emplaced into the Mojave Desert (the traction and tectonic erosion of the lower- >2000-km-long NNW-trending granitic southern California batholith) and suggest- most crust and upper subcontinental man- arc emplaced largely during three mag- ing a consanguineous relationship. In con- tle lithosphere (LC-SCML) due to flatten- matic “flare-up” events at ca. 230–210 Ma, trast, Mesozoic and early Cenozoic igneous ing of an ~500-km-wide segment of the ca. 160–150 Ma, and ca. 100–75 Ma (e.g., rocks from SW Arizona, with age peaks at subducting Farallon plate (Livaccari et al., Ducea, 2001). In contrast to the SNB to the ca. 60 and 170 Ma, do not provide as close 1981; Bird, 1988; Saleeby, 2003; Axen et north and the Peninsular Ranges batholith a match. In light of these results, we sug- al., 2018). Parts of the central Andean oro- to the south (Fig. 1), much of the ~500-km- gest that a mafic keel to the southern gen are regarded as the best modern ana- long SCB is rootless, lying tectonically California batholith: (1) formed in two dis- logue, where shallow slab segments coin- above underplated trench assemblages (the crete (Late Jurassic and Late Cretaceous) cide with colliding aseismic ridges and Rand and related schists) that were trans- pulses; (2) was transported along the Moho oceanic plateaux (e.g., Gutscher et al., ported inboard by shallow-angle subduc- ~500 km eastward along the leading edge 2000). Analysis of plate reconstructions tion (Jacobson et al., 1988; Grove et of the shallowly subducting Farallon plate; for the Pacific-Farallon ridge led to the al., 2003; Chapman, 2017; Ducea and and (3) was affixed to the base of the crust interpretation that the Laramide orogeny Chapman, 2018). These schists are exposed in central Arizona. Titanite U-Pb and gar- resulted from the subduction of conjugate in the footwall of the shallowly dipping net Sm-Nd ages spanning ca. 60–30 Ma massifs to the Hess and Shatsky oceanic Rand fault, interpreted as a remobilized suggest that displaced arclogite remained plateaux (Livaccari et al., 1981; Liu et subduction megathrust (e.g., Cheadle et al., at >600 °C for tens of millions of years fol- al., 2010). Furthermore, an ~500-km-wide 1986; Chapman, 2017), beneath deep lowing its dispersal and until entrainment Laramide deformation corridor parallels crustal level SCB assemblages and the in host latite. The lack of arclogite and the subduction trajectory of inferred Hess southern SNB (Fig. 1).

4 GSA Today | January 2020 120˚W 116˚W 112˚W

38˚N COO SNBNBB pplateaplateaulaateau 36˚N SaliniS a alin CV a CC 34˚N

Xenolith locations B: Big Creek C: Cima Cv Cc: Camp Creek Cc Cv: Chino Valley D: Dish Hill C D X: Crystal Knob

Mz SSNBNB - SCB EarlyEarly Cz subducsubduction megamegathrustthrust MMzz ununderplatedderplated scschistshists X Late KsK subducubducttionion CCratonic/innerratonic/inner passive marmargingin cruscrustt cchannelhannel boundariesboundaries UnderplatedUnderplated Fararallonllon mantmantlele lithospherlithosphere Late K normal ffaultsaults MMzz wewedgedge + pC SCML (ora(orange)nge) + Mz arclogitearclogite (red)(red) Inactive retro-arc tthrustshrusts UUpperpper Mz forrearcearc basin (li(light)ght) + Jurassic ophiolite (darkk))

Figure 1. Fence diagram showing idealized lithospheric structure for beginning of Cenozoic time for sections across Sierra Nevada batholith (SNB)–Great Valley forearc, southern California batholith (SCB)–Colorado Plateau transition zone, and linking section across the southern SNB. Locations of sections shown on inset. Cz—Cenozoic; CO—Colorado; K—Cretaceous; Mz— Mesozoic; pC—Precambrian; SCML—subcontinental mantle lithosphere.

The SNB is tilted into a southward deepen- the central Mojave demarcating a western eNd = −6.4 to −13.0 (Fig. 1; Luffi et al., ing section spanning paleodepths of ~10–35 schist-bearing domain, and an eastern 2009). These data indicate that ancient km (e.g., Nadin and Saleeby, 2008). Structural domain lacking significant schist and con- LC-SCML was not entirely sheared off and petrologic relations in the SCB and taining remnants of ancient LC-SCML from beneath the eastern to central Mojave southernmost SNB indicate that the base of (Fig. 1). region by Laramide flat-slab subduction. the batholith and underlying LC-SCML was Remnants of pre- to syn-Laramide man- sheared off at 30–35 km depth and replaced Laramide Imprints in Xenoliths tle lithosphere that constituted the mantle with trench materials (Grove et al., 2003; Xenolith suites of the SW Cordillera wedge for the SNB are present in late Saleeby, 2003; Chapman, 2017). record development of the LC-SCML prior Miocene xenolith suites from the central What was the fate of the sub-SCB to, during, and following the Laramide SNB (e.g., Ducea and Saleeby, 1998; LC-SCML? Do remnants of the displaced event. Proterozoic upper mantle and lower Ducea, 2001; Chin et al., 2012). Pressure- material exist, and if so, what is the rela- crustal xenoliths in the Colorado Plateau temperature-time constraints indicate that tionship between LC-SCML remnants and vicinity, in conjunction with Nd isoto- this fossilized mantle wedge extended to and underplated schist? Seismic data and pic data on mafic volcanic rocks of ~125 km depth and cooled rapidly follow- receiver function analysis provide some the region, record local preservation of ing the Late Cretaceous (Laramide) termi- answers to these questions, linking sur- LC-SCML beneath the region through nation of magmatism (e.g., Ducea and face exposures of schist directly to a Laramide time (Livaccari and Perry, 1993). Saleeby, 1998; Saleeby et al., 2003; Chin et regional flat fabric with NE-SW seismic Xenolith suites from the eastern and cen- al., 2012). Peridotites and garnet websterite anisotropy beneath thin (~30 km) Mojave tral Mojave region also provide evidence for dominate the base of the section and grade crust (Cheadle et al., 1986; Porter et al., underlying remnants of ancient LC-SCML. upward into an ~45-km-thick zone of gar- 2011). Additional constraints from geo- First, spinel peridotites from the Pliocene– net clinopyroxenite followed by garnet chemical data reveal an ~N-S–trending Quaternary Cima cones yield Re-Os model granulite at ~40 km paleodepth. Trace- boundary at ~116°W, west of which lacks a ages of 1.8–3.4 Ga (Fig. 1; Lee et al., 2001), element data and Sm-Nd isochron ages lithospheric isotopic fingerprint and sug- overlapping ca. 2.0 Ga Sm-Nd model ages indicate that the garnet clinopyroxenites gests the presence of underplated schists on nearby Precambrian basement rocks are partial-melt residues, or deep level (Miller et al., 1996). Collectively, these (Bennett and DePaolo, 1987). Second, a cumulates, linked to the overlying SNB studies reveal a major compositional subordinate group of peridotite xenoliths (Ducea and Saleeby, 1998; Ducea, 2001). boundary within the mid- to deep crust of from the Quaternary Dish Hill cone yield These garnet clinopyroxenites are com-

www.geosociety.org/gsatoday 5 monly referred to as eclogites, but contrast As to the fate of the displaced SCB exposes mainly 1.6–1.8 Ga Yavapai- with classic eclogites by having more Ca- LC-SCML, we suggest that several latest Mazatzal basement overlain by Proterozoic and Mg-rich clinopyroxene, more Fe- and Oligocene lower lithosphere xenolith loca- to Mesozoic strata, much older ages are Ca-rich garnet, and commonly contain tions from the Colorado Plateau transition expected. It should be noted that ca. 70–55 accessory hornblende. These arc root zone contain remnants of the missing litho- Ma porphyry copper deposits and a ca. cumulates are commonly referred to as sphere. This assertion predicts that native 190–160 Ma magmatic arc crop out a few “arclogites” (Anderson, 2005). sub-arc materials and displaced equivalents tens of kilometers SW of the studied xeno- The preservation of >100 km of central should contain similar arrays of rock types. lith localities (GSA Data Repository Fig. SNB lower lithosphere (arc root lower This is indeed the case, as ca. 25 Ma latite at DR11; e.g., Vikre et al., 2014; Tosdal and crust and upper mantle) contrasts sharply Camp Creek and Chino Valley localities Wooden, 2015; Chapman et al., 2018). with the virtual absence of these materials each contain abundant nodules of, in order Hence, Latest Cretaceous–early Cenozoic beneath the SCB (Fig. 1). Geochemical of decreasing abundance, garnet-pyroxene and Early–Middle Jurassic xenolith zircon proxies for crustal thickness (e.g., Sr/Y rocks, garnet granulite, peridotite, and ages, readily distinguishable from Late and La/Yb) strongly suggest that a deep quartzofeldspathic gneiss (Schulze and Cretaceous and Late Jurassic ages expected sub-SCB root indeed existed prior to shal- Helmstaedt, 1979; Arculus and Smith, 1979; from the Mojave Desert, may point to a SW low-angle subduction, forming in the Late Smith et al., 1994; Esperança et al., 1988, Arizona origin. Jurassic and thickening significantly dur- 1997; Erdman et al., 2016). As with the sub- ing the Late Cretaceous magmatic flare- SNB suite, garnet clinopyroxenite xenoliths NEW RESULTS AND up (Howard et al., 2016). We now focus on from Chino Valley and Camp Creek are INTERPRETATIONS the fate of missing SCB lower lithosphere arclogitic in composition, and equilibrated A small percentage (~5%) of garnet-clino- and the regional extent of Farallon plate between 600 and 900 °C and 12–28 kbar pyroxenite-amphibole xenoliths contains mantle lithosphere underplating beneath (45–100 km depth assuming a 2800 kg/m3 trace amounts of zircon. Zircon separated the “unrooted” SCB. overburden density; Smith et al., 1994; from host xenoliths were analyzed via laser Esperança et al., 1988; Erdman et al., 2016). ablation–multi-collector inductively coupled SCB LOWER LITHOSPHERE Furthermore, high field strength element plasma–mass-spectrometry (LA-MC-ICP- DISPLACEMENT AND compositions and major element systemat- MS) at the Arizona LaserChron Center (see RECONSTRUCTION ics of Arizona xenoliths balance those footnote 1). It is important to reiterate here that expected from calc-alkaline magmatic dif- Three xenolith groups were identified, despite LC-SCML removal from beneath ferentiation (Tang et al., 2018, 2019). Finally, based on lithologic relations and U-Pb zir- the SCB, and subsequent tectonic under- Mesozoic plutons of the Mojave Desert and con ages. Group 1 xenoliths contain a sig- plating of schist, the lithosphere-astheno- arclogite recovered from Chino Valley and nificant modal proportion of amphibole sphere boundary in the Mojave region cur- Camp Creek all share similar isotope sys- (>10%), which overprints the primary rently lies deeper than ~60 km (e.g., Luffi tematics, with 87Sr/86Sr and eNd values rang- arclogite assemblage, and are extensively et al., 2009). This profound relationship ing from 0.706 to 0.711 and −2 to −10, injected and altered by host latite. Zircon indicates that latest Cretaceous–Cenozoic respectively (Esperança et al., 1988; Smith grains extracted from these nodules yield a reconstruction of the mantle lithosphere et al., 1994; Miller et al., 1996). These rela- bimodal age distribution consisting chiefly beneath the schists must have taken place. tions point to a thick sub-SCB residue, of Late Jurassic (kernel density estimate Relationships resolved in Dish Hill and rather than a lower plate, origin. peak at ca. 150 Ma) ages with a lower pro- Crystal Knob xenolith suites (Fig. 1) indi- This assertion also predicts that materi- portion (~25%) of Late Cretaceous–early cate that the underlying mantle lithosphere als once attached to the base of the SCB Cenozoic (peak at ca. 70 Ma) grains (Fig. was reconstructed by tectonic underplating should share the early thermal history of 2). The second group of xenoliths consists of Farallon plate sub-oceanic mantle the Mojave Desert. For example, the of relatively fresh arclogite (i.e., less between 80 and 30 Ma (Luffi et al., 2009; Mojave Desert is underlain chiefly by injected with melt and containing less sec- Liu et al., 2010; Quinn et al., 2018). Middle Jurassic–Early Cretaceous (ca. ondary amphibole). These samples contain Considering that eclogitic fragments of the 160–140 Ma) and Late Cretaceous (90–70 zircon that yield a unimodal spread of con- Farallon Plate (Usui et al., 2003) plus sig- Ma) arc plutonic assemblages with rela- cordant Cretaceous to early Cenozoic ages nificant amounts of ancient LC-SCML tively small amounts of Mesozoic to ranging from ca. 100–50 Ma with a peak both underlie the Laramide interior, the Neoproterozoic metasedimentary rocks centered at ca. 75 Ma (Fig. 2). A final group lower lithosphere beneath a significant part (Wells and Hoisch, 2008; Barth et al., 2008; of mid- to deep-crustal foliated granitic of the Laramide corridor must be a com- Needy et al., 2009; Chapman et al., 2018). gneiss is less abundant than its deep-crust/ posite of these assemblages. As shown on Hence, if xenoliths recovered from Chino upper mantle arclogite counterparts and Figure 1, the underplated schists plus Valley and Camp Creek localities are yields concordia ages of ca. 1.7 Ga (Fig. underlying mantle lithosphere constitute a indeed consanguineous with the SCB, the DR7 [see footnote 1]). These nodules are lithosphere-scale accretionary complex xenoliths should yield chiefly Late interpreted as Proterozoic assemblages lying beneath a carapace of SCB granitoids Cretaceous and Late Jurassic ages. If native to central Arizona. that was stripped of most of its underlying instead the xenoliths are native to the Our new results indicate that studied mantle wedge. Colorado Plateau transition zone, which arclogitic xenoliths are coeval with the

1GSA data repository item 2019368, field observations, sample descriptions, analytical methods, and zircon U-Pb data, is online atwww.geosociety.org/datarepository/2019 .

6 GSA Today | January 2020 CPTZ Xenoliths Group 2 N N=8 n=96

Nev Group 1 Sr i >0.706 adaplano N=6 Farallon plate <0.706 n=112 proto- x’ Nevadaplanox’ Franciscan Farallon plate wedge Mojave x x Desert ~40 km/my

~80 km/my

A ca. 155 Ma 500 km B ca. 120 Ma

N=77 Colorado Plateau Transition Zone NevN adapland l o

e Franciscan wedge Nevadaplano Franciscan wedge x’ Shatsky conjugat N=74 x’

POR Farallon plate 050 100 150 200 ~100 km/my x POR Age (Ma) Shatskyy conjugateconjugate Figure 2. Non-normalized kernel density estimates x with 10-m.y. bandwidth comparing U-Pb zircon ~150 km/my ages from Colorado Plateau transition zone (CPTZ; Farallon plate Chino Valley and Camp Creek localities) xenoliths C ca. 75 Ma D ca. 65 Ma with pluton ages from the Mojave Desert (Barth et al., 2008; Wells and Hoisch, 2008; Needy et al., 2009; Chapman et al., 2018) and the CPTZ (Vikre et JddFF al., 2014; Tosdal and Wooden, 2015; Chapman et al., pplatlate 2018). N—number of analyzed samples; n—number BBasBasinsiidn aandnd RRanganggee of analyzed grains. MTM J

Juanuan dee FuFucaca ColorCCoolloradoado Colorado SCB and, with the exception of a small pro- platplate PlateauPlateau Plateau PPaaci cci c pplatlate portion (<10% of analyzed grains) of Latest PORPO x’ POR CV x’ MTJ CV CC (paleo CC Cretaceous–early Cenozoic grains, are ShelfSh break SC e x lf older than Arizona porphyry copper depos- Paci c plate RTJ x -subduc-sub brea its (Vikre et al., 2014; Chapman et al., 2018; bducb

Fig. 2). Furthermore, Late Jurassic zircon tition zone on zone populations in group 1 xenoliths overlap ~60 km/my Mojave Desert pluton emplacement ages ~50 km/my ) and are younger than those expected from the Early–Middle Jurassic magmatic arc of E ca. 20 Ma GGdldl platplatee F Todaoday SW Arizona (Fig. 2). These relations lead us to assert that arclogitic xenoliths are not Orogenic highland Subduction complecomplex Ridge-trRidge-traansformsn Early Jurassic arc Core complex (red) and native to central Arizona and instead repre- LCLC-SCML-SCML fofoundering Active magmatism Oceanic lithospherosphere schist (black), showing sent LC-SCML fragments displaced east- SubductionSubduction Ophiolite-oored forearc/ upper plate transport Extending lithospherthosphere megathrustmegathrus ward from beneath the SCB and reaffixed fringing arc basin Farallon/Paci c motion ThrusThrust beneath the transition zone. ~50 km/my relative to xed N. America We propose the following model for the Figure 3. SW U.S. plate tectonic reconstruction for (A) middle Jurassic, (B) Early Cretaceous, (C) Late petrologic and tectonic evolution of Colorado Cretaceous, (D) Latest Cretaceous, (E) late Cenozoic, and (F) Recent time (modified after DeCelles, 2004; Saleeby and Dunne, 2015). Farallon/Pacific plate trajectories from Engebretsen et al. (1985). Plateau transition zone arclogite (Figs. 3 and Surface outline of lowermost crust and upper subcontinental mantle lithosphere (LC-SCML) foun- 4). In Late Jurassic time, group 1 (i.e., amphi- dering from Levander et al. (2011) and Erdman et al. (2016). Core complex and schist kinematics from Dickinson (2009) and Chapman (2017), respectively. See text for details. CC—Camp Creek; CV—Chino bole-rich arclogite) xenoliths began forming Valley; MTJ—Mendocino triple junction; POR—Pelona-Orocopia-Rand schist; RTJ—Rivera triple as a mafic keel to continental arc magmas junction; SC—San Carlos; Gdl—Guadalupe plate.

www.geosociety.org/gsatoday 7 emplaced into the central and eastern Mojave A 155 Ma Magmatic arc Sri<0.706 Sri>0.706 Desert crust (Barth et al., 2008; Needy et al., x’ 2009; Chapman et al., 2018). Following an x Farallon plate MSL

~ ~ N. American crust

~ ~

~ ~ ~ ~

~ ~ ~ Early Cretaceous lull in arc activity, the sub- ~ ~ ~ ~ SOML ~ ~ 50 SCB root experienced a Late Cretaceous SCML 100 pulse of growth associated with increased magmatism in the SCB (Wells and Hoisch, 150 km 2008; Needy et al., 2009; Chapman et al., 2018), as recorded by ca. 80–70 Ma zircon B 120 Ma Magmatic lull in arc ages in group 1 and 2 xenoliths. These Late MSL Cretaceous additions to existing SCB root ~ ~ ~ ~

~ ~ material and concomitant plutonism at higher SOML ~ ~ 50 SCML levels of the crust likely resulted from delam- 100 ination and foundering of LC-SCML, desta- 150 km bilized by slab shallowing-related lateral stresses, and ensuing upwelling of hot asthe- Delamination magmatism nosphere (Leventhal et al., 1995; Wells and C 75 Ma Nevadaplano Hoisch, 2008). MSL Shallow-angle subduction likely com- Shatsky conjugate LC-SCML failure 50 menced at the plate margin in the ca. 90–75 SOML and translation Ma time interval, based on plate motion 100 modeling and the timing of schist under- 150 km plating (e.g., Grove et al., 2003; Liu et al., 2010; Chapman, 2017). The leading edge of the shallowly subducting segment likely D 65 Ma Laramide magmatism reached the central Mojave Desert, then MSL ~500 km inboard from the margin, no later 50 than 70 Ma, assuming an orthogonal con- 100 verge rate of 100 km/m.y. (Engebretson et Imbricated SOML al., 1985; Copeland et al., 2017). At this 150 km point, schist underplating continued while the slab shallowed quickly, shutting off E 20 Ma Incipient SAf CV, CC Ig. are-up; MCC CO Plateau magmatism in the SCB, dislodging its MSL LC-SCML, and tectonically bulldozing these materials along the Moho and up to 50 Arclogite 100 ~500 km farther inboard to the Colorado Imbricated SOML delamination Plateau transition zone (Axen et al., 2018). 150 km In the process, strong coupling along the subduction interface drove significant SAf SC thickening of foreland crust and the forma- F Today Basin and Range CO Plateau Pacic plate MSL

tion of a vast orogenic plateau (DeCelles, ~

~ ~

~ ~ ~

~ ~ ~ ~ 2004; Henry et al., 2012; Copeland et al., ~ 50 2017; Chapman et al., 2018). (It should be SOML 100 noted that lower lithosphere is intact NE of the Colorado Plateau transition zone; 150 km hence, deformation along the Laramide Figure 4. Cross sections corresponding to x–x' locations in Figure 3. Vertical equals horizontal scale. Colors correspond to those in Figure 3. See text for details. CC—Camp Creek; CO—Colorado; CV— corridor as far inboard as the Black Hills of Chino Valley; Ig.—ignimbrite; LC—lower crust; MCC—metamorphic core complexes; MSL—mean sea South Dakota was likely due to horizontal level; SAf—San Andreas fault; SC—San Carlos; SCML—sub-continental mantle lithosphere; SOML— end-loading, as suggested by Livaccari and sub-oceanic mantle lithosphere. Perry [1993].) Meanwhile, magmatism swept inboard, forming ca. 75–55 Ma granitic stocks and associated copper mineral- A LASTING SCAR: CENOZOIC al., 1988; Erdman et al., 2016). This obser- ization in the transition zone (Coney and DELAMINATION AND EXTENSION vation is readily explained by the well- Reynolds, 1977; Vikre et al., 2014). We IN THE SW UNITED STATES documented Eocene to Miocene westward suggest that the combination of magma- Xenolith garnet Sm-Nd and titanite U-Pb sweep of magmatism (e.g., Coney and tism and crustal thickening–related radio- ages span the entire Paleogene, indicating Reynolds, 1977; Copeland et al., 2017), genic heating precipitated Latest Cre- that displaced arclogite remained hot (>600 including the ca. 25 Ma arclogite xenolith- taceous–early Cenozoic zircon growth in °C) for tens of millions of years following hosting latite, that accompanied rollback dislodged arclogite. its dispersal (Dodson, 1973; Esperança et and tearing of the Farallon slab. This time

8 GSA Today | January 2020 also marked a shift from convergent to southwest U.S. Cordillera, in Wright, J.E., and tributions to Mineralogy and Petrology, v. 40, extensional tectonism in the SW United Shervais, J.W., eds., Ophiolites, Arcs and Batho- p. 259–274, https://doi.org/10.1007/BF00373790. States, including the initiation of the south- liths: A Tribute to Cliff Hopson: Geological Soci- Ducea, M.N., 2001, The California Arc: Thick gra- ety of America Special Paper 438, p. 379–396, nitic batholiths, eclogitic residues, lithospheric- ern belt (i.e., California, Arizona, and https://doi.org/10.1130/2008.2438(13). scale thrusting, and magmatic flare-ups: GSA Sonora) of Cordilleran metamorphic core Bennett, V.C., and DePaolo, D.J., 1987, Proterozoic Today, v. 11, p. 4–10, https://doi.org/10.1130/ complexes (Dickinson, 2009) and exhuma- crustal history of the western United States as 1052-5173(2001)011<0004:TCATGB>2.0.CO;2. tion across the schist outcrop belt (e.g., determined by neodymium isotopic mapping: Ducea, M.N., and Chapman, A.D., 2018, Sub-mag- Chapman, 2017). Geological Society of America Bulletin, v. 99, matic arc underplating by trench and forearc p. 674–685, https://doi.org/10.1130/0016-7606 materials in shallow subduction systems; a geo- The lack of arclogite and abundance of (1987)99<674:PCHOTW>2.0.CO;2. logic perspective and implications: Earth- spinel peridotite xenoliths in ca. 15 Ma and Bird, P., 1988, Formation of the Rocky Mountains, Science Reviews, v. 185, p. 763–779, https://doi younger volcanic host rocks of the transi- western United States: A continuum computer .org/10.1016/j.earscirev.2018.08.001. tion zone (e.g., the San Carlos locality; model: Science, v. 239, p. 1501–1507, https://doi Ducea, M.N., and Saleeby, J.B., 1998, The age and Nealey and Sheridan, 1989), in conjunction .org/10.1126/science.239.4847.1501. origin of a thick mafic-ultramafic keel from be- Chapman, A.D., 2017, The Pelona-Orocopia-Rand neath the Sierra Nevada batholith: Contributions with a vertical high-seismic-velocity and related schists of southern California: A re- to Mineralogy and Petrology, v. 133, p. 169–185, anomaly and the presence of a “double view of the best-known archive of shallow sub- https://doi.org/10.1007/s004100050445. Moho” within the Colorado Plateau transi- duction on the planet: International Geology Re- Engebretson, D.C., Cox, A., and Gordon, R.G., tion zone (Levander et al., 2011; Erdman et view, v. 59, no. 5–6, p. 664–701, https://doi.org 1985, Relative Motions between Oceanic and al., 2016), suggest that arclogite has been /10.1080/00206814.2016.1230836. Continental Plates in the Pacific Basin: Geo- Chapman, A.D., Saleeby, J., Wood, D.J., Piasecki, logical Society of America Special Paper 206, foundering into the mantle and being A., Kidder, S., Ducea, M., and Farley, K., 2012, 59 p., https://doi.org/10.1130/SPE206-p1. replaced by upwelling asthenosphere since Late Cretaceous gravitational collapse of the Erdman, M.E., Lee, C.-T.A., Levander, A., and early Miocene time. We speculate that southern Sierra Nevada batholith, California: Jiang, H., 2016, Role of arc magmatism and post-Laramide rollback and tearing of the Geosphere, v. 8, p. 314–341, https://doi.org/ lower crustal foundering in controlling eleva- Farallon slab and associated influx of 10.1130/GES00740.1 . tion history of the Nevadaplano and Colorado asthenosphere destabilized the foreign Chapman, J.B., Dafov, M.N., Gehrels, G., Ducea, Plateau: A case study of pyroxenitic lower crust M.N., Valley, J.W., and Ishida, A., 2018, Litho- from central Arizona, USA: Earth and Plane- mafic keel of the Colorado Plateau, leading spheric architecture and tectonic evolution of the tary Science Letters, v. 439, p. 48–57, https://doi to its removal and heating of overlying southwestern U.S. Cordillera: Constraints from .org/10.1016/j.epsl.2016.01.032 . material. Ensuing flow in the weakened zircon Hf and O isotopic data: Geologic Society Esperança, S., Carlson, R.W., and Shirey, S.B., 1988, lower crust, which remained feebly cou- of America Bulletin, v. 30, p. 2031–2046, https:// Lower crustal evolution under central Arizona: Sr, pled to the upper crust, facilitated the local- doi.org/10.1130/B31937.1. Nd, and Pb isotopic and geochemical evidence Cheadle, M.J., Czuchra, B.L., Byrne, T., Ando, from mafic xenoliths of Camp Creek: Earth and ized surface extension that ultimately C.J., Oliver, J.E., Brown, L.D., Kaufman, S., Planetary Science Letters, v. 90, p. 26–40, https:// resulted in the southern belt of Cordilleran Malin, P.E., and Phinney, R.A., 1986, The deep doi.org/10.1016/0012-821X(88)90108-2. metamorphic core complexes. crustal structure of the Mojave Desert, Califor- Esperança, S., Carlson, R.W., Shirey, S.B., and Smith, nia, from COCORP seismic reflection data: D., 1997, Dating crust-mantle separation: Re-Os ACKNOWLEDGMENTS Tectonics, v. 5, p. 293–320, https://doi.org/ isotopic study of mafic xenoliths from central Ari- This effort benefitted from assistance by 10.1029/TC005i002p00293 . zona: Geology, v. 25, p. 651–654, https://doi.org/ D. Abboud, B. Hunter, and J. Thole; discussions Chin, E., Lee, C.T., and Luffi, P., 2012, Deep litho- 10.1130/0091-7613(1997)025<0651:DCMSRO> with S. Esperança and D. Smith; helpful reviews by spheric thickening and refertilization beneath 2.3.CO;2. G. Axen and C.-T. Lee; and editorial handling by continental arcs: Case study of the P, T and com- Grove, M., Jacobson, C.E., Barth, A.P., and Vucic, P. Copeland. This work was supported by NSF positional evolution of peridotite xenoliths from A., 2003, Temporal and spatial trends of Late grants EAR-1524768 (to ADC) and EAR-1725002 the Sierra Nevada, California: Journal of Petrol- Cretaceous–early Tertiary underplating Pelona (to MND) and Romanian UEFISCDI projects ogy, v. 53, p. 477–511, https://doi.org/10.1093/ and related schist beneath Southern California PN-III-P4-ID-PCE-2016-0127 and PN-III-P4-ID- petrology/egr069. and southwestern Arizona: Geological Society PCCF-2016-0014 (to MND). 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10 GSA Today | January 2020 GSA Adopts New Code of Ethics & Professional Conduct

On 21 Sept. 2019, the GSA Council approved a new Code of determining whether the code has been violated and, if so, what Ethics & Professional Conduct. This new ethics policy replaces corrective action is appropriate. GSA’s Code of Conduct, which was put in place in the 1990s. It So far, the new code has been well received. As GSA member was developed in response to a 2017 decision by GSA leadership, Wendy Bohon writes, “I believe that having a code of conduct is under then GSA President Isabel Montañez, to form an ad hoc critical for a healthy organization. By articulating our values, expec- committee to evaluate GSA’s ethics policies and practices in light tations and accountabilities we reinforce and encourage respectful, of high-profile ethics cases in many scientific fields. According to inclusive, collaborative meetings and workspaces. A code of con- Dr. Montañez, “As a premier society for professional geoscientists, duct doesn’t just lay out expectations for behavior, although it cer- GSA saw a pressing need to establish enforceable ethics stan- tainly does that as well, it shows an organization’s commitment to dards—not only to provide for accountability, but to set a positive the safety, dignity and well-being of its members. All of these ele- example for the geoscience profession overall.” ments are necessary for producing the rich, outstanding science that GSA’s new code sets forth enforceable standards of conduct for comes from a broad and diverse set of scientists where everyone is all GSA members and aspirational standards that embody GSA’s able to perform to their full potential.” goal of fostering a culture of integrity across the geosciences. Many For further information about GSA’s Code of Ethics & GSA members and staff contributed to this effort over the past two Professional Conduct and other ethics resources, check GSA’s years, including an 11-person ad hoc ethics committee and a seven- ethics homepage by navigating to the “About” tab on GSA’s person ad hoc code of ethics drafting committee. In addition, GSA website, https://www.geosociety.org. You also may submit an received 120 comments from members on an early draft before the email to [email protected]. code was finalized. Our members’ input was invaluable; it enabled us to create a streamlined policy to address the most critical ethics and compliance issues facing our scientific community. More detailed policies on specific topics, including GSA’s Events Code of Conduct and the Ethical Guidelines for Publication, support Being a member of a professional society inherently our new code. While both these policies apply to GSA members indicates that we, as individuals, are professionals. and non-members who participate in GSA-sponsored activities and Professionalism means conducting oneself with responsi- publications, our new Code of Ethics & Professional Conduct only bility, integrity, accountability, and excellence at all times. applies to GSA members. “Our new ethics policy reflects expecta- If our behavior isn’t ethical, then we aren’t an ethical pro- tions of professional conduct,” says GSA’s executive director, Vicki fession. A lack of ethics erodes not only our standing as a McConnell. “GSA now has clearly defined standards of professional scientific society, but also the integrity of science. GSA’s conduct as guidance for our members regardless of the professional new Code of Ethics affirms that by virtue of GSA member- setting or location, even if the activity is not sponsored by GSA.” ship, we extend and expect professional conduct in every In adopting the new code, GSA’s leaders recognized the critical aspect of conducting science. Congrats GSA on this vital importance of having a fair process for resolving allegations of step forward! misconduct. “GSA takes all ethics complaints seriously,” says GSA’s current president, Don Siegel, “but we also need to protect Monica E. Gowan members through the use of reasonable due process and confiden- GSA Fellow tiality procedures.” To that end, GSA’s Policy & Procedures for Former GSA Councilor Handling Potential Ethical Violations sets forth specific rules to Former Officer, Geology and Health Division process ethics complaints to ensure fairness, confidentiality, Past Chair, GSA Geology and Public Policy Committee and consistency. Ultimately, the GSA Council is responsible for

www.geosociety.org/gsatoday 11 GSA 2019 Annual Meeting & Exposition Wrap-Up

To all the attendees, sponsors, Scientific Divisions, Associated In case you missed these talks at GSA 2019, we’ve saved them Societies, invited guests, speakers, awardees, and exhibitors, online for you! I extend a sincere thank you for a job well done at the 2019 GSA GSA Presidential Address and Awards Ceremony: Annual Meeting and Exhibition in Phoenix, Arizona, USA. It was https://livestream.com/accounts/7595903/events/8768783 a great meeting with impressive science, compelling speakers and stimulating special sessions, plenty of networking, and fun. Join Late-Breaking Session: Ten-Million Years of Deformation along the me in thanking the local planning committee and all the volun- Eastern California Shear Zone: Context and Characterization of the teers who make this happen. Let’s do it again in 2020 by propos- July 2019 MW7.1 Ridgecrest Earthquake: https://livestream.com/ ing a session, a Pardee Symposium, or a Short Course or by pre- accounts/7595903/events/8768809 senting your science during the meeting. See you in Montréal!” P2. Grand Ideas, Grand Events: Geoscience Research, Geoscience —Vicki S. McConnell, GSA Executive Director Education, and Human Connections to Grand Canyon at its Six Millionth, 150th, and 100th Anniversaries: https://livestream.com/ accounts/7595903/events/8768814 By the Numbers Attendees: 5,519 Feed Your Brain: Scott W. Tinker, “Switch is Back! Energy Professionals: 2,514 Poverty, the Energy Transition, and Modern Energy Education”: Early Career Professionals: 502 https://livestream.com/accounts/7595903/events/8768816 Students: 2,014 K–12 Teachers: 61 P3. Geoscience Communication in the Modern Age: Mentors: 121 https://livestream.com/accounts/7595903/events/8768819 On To the Future Scholars: 75 Countries Represented: 44 P4. Fostering an Inclusive Academic Culture for the 21st Century: Abstracts Presented: 3,654 (2,228 orals; 1,426 posters) Advancing Policies, Departments, and Supporting Faculty to Address Short Courses: 19, with 391 participants the Needs and Challenges for Building a Healthy Geoscience Field Trips: 23, with 499 participants Enterprise: https://livestream.com/accounts/7595903/ Companies Exhibiting: 207 events/8768822

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www.geosociety.org/gsatoday 13 FINAL CALL Award & Nomination Deadlines

www.geosociety.org/gsa/awards/nominate.aspx ®

For details, see the October 2019 GSA Today or go to https:// achievements and service to the Earth sciences having lasting, www.geosociety.org/awards. You can also email awards@ historic value; who has been recognized for accomplishments in geosociety.org. field(s) of expertise by professional societies, universities, or other organizations; and is a senior scientist nearing completion Nomination deadline: 1 Feb. or has completed full-time regular employment. 2020 GSA Medals and Awards • Penrose Medal Proposal deadline: 1 Feb. • Day Medal Tim W. Wawrzyniec Fellowship at the Rocky • Honorary Fellow Mountain Biological Laboratory • Young Scientist Award (Donath Medal) This fellowship is intended to support research conducted by Ph.D.- • GSA Public Service Award holding investigators who have not previously worked through Rocky • Randolph W. “Bill” and Cecile T. Bromery Award for Minorities Mountain Biological Laboratory (RMBL). The intent is for this fund • GSA Distinguished Service Award to award US$5,000 annually. The deadline for new proposals to • Doris M. Curtis Outstanding Woman in Science Award RMBL is 1 Feb. The deadline for the fellowship application form is • Geologic Mapping Award in Honor of Florence Bascom 15 Feb. Go to http://www.rmbl.org/scientists/ to learn more about conducting research at RMBL. For information about fellowships and Application deadline: 1 Feb. working at RMBL, please contact [email protected]. 2020 Cole Research Grant Awards • The Gladys W. Cole Memorial Research Award for research Nomination deadline: 1 Mar. on the geomorphology of semiarid and arid terrains in the United • GSA International Distinguished Career Award States and Mexico is awarded annually to a GSA member or • James B. Thompson, Jr., Distinguished Interna- Fellow between 30 and 65 years of age who has published one or tional Lecturer Award more significant papers on geomorphology. Learn more at https://www.geosociety.org/gsa/about/ • The W. Storrs Cole Memorial Research Award for research on GSA_international/GSA/international/awards.aspx. invertebrate micropaleontology is awarded annually to a GSA member or Fellow between 30 and 65 years of age who has published one or more significant papers on micropaleontology. Nomination deadline: 31 Mar. Learn more at https://www.geosociety.org/gsa/grants/postdoc.aspx. John C. Frye Environmental Geology Award In cooperation with the Association of American State Nomination deadline: 1 Feb. Geologists and supported by endowment income from the GSA AGI Awards Foundation’s John C. Frye Memorial Fund, GSA makes an annual Submit nominations for the following awards at www.agiweb.org/ award for the best paper on environmental geology published direct/awards.html. either by GSA or by a state geological survey. • AGI Medal in Memory of Ian Campbell for Superlative Service to the Geosciences recognizes singular performance in and con- For a list of other national awards and nomination forms, go to tribution to the profession of geology. https://www.geosociety.org/gsa/about/awards/gsa/awards/ • AGI Marcus Milling Legendary Geoscientist Medal is given to a national.aspx. If you know of an award not listed, please send the recipient with consistent contributions of high-quality scientific details to [email protected].

14 GSA Today | January 2020 CALL FOR NOMINATIONS GSA Scientific Division Awards

ENERGY GEOLOGY DIVISION Richard H. Jahns Distinguished Lecturer Nominations due 28 Feb. Gilbert H. Cady Award Submit nominations or questions to Stephen Slaughter at stephen Nominations due 28 Feb. [email protected]. Submit nominations to Marc L. Buursink at buursink.usgs@ The Richard H. Jahns Distinguished Lectureship was estab- gmail.com. lished in 1988 by the Environmental & Engineering Geology The Gilbert H. Cady Award, first presented in 1973, recog- Division and the Association of Environmental & Engineering nizes outstanding contributions in the field of coal geology that Geologists to commemorate him and to promote student aware- advance the science both within and outside of North America. ness of engineering geology through an annual series of lectures For more information, go to https://community.geosociety.org/ at academic institutions. The award is given to an individual energydivision/awards/cady. who, through research or practice, has made outstanding contributions to the advancement of environmental and/or engineering NEW: Curtis-Hedberg Petroleum Career geology. The awardee will speak on topics of earth processes and Achievement Award the consequences of human interaction with these processes, or Nominations due 1 Mar. the application of geology to environmental and/or engineering Submit nominations to Laura S. Ruhl, [email protected] works. Award funds are administered by the GSA Foundation. The inaugural Curtis-Hedberg Petroleum Career Achievement For more information, go to https://community.geosociety.org/ Award will be made for outstanding contributions in the field of eegdivision/awards/jahns. petroleum geology. The award will go to a GSA member that has had a career in petroleum geology and has made contributions to the dis- GEOARCHAEOLOGY DIVISION covery of petroleum reserves or the development of a new idea(s) and/ or technology that increased petroleum resources. Considerations will Richard Hay Student Paper/Poster Award be given for their publications and their contributions to geoscience Nominations due 1 Sept. societies and institutions. Petroleum geology is defined as the field of Submit nominations to [email protected]. knowledge concerning the origin, occurrence, relationships, and geo- At the 2006 Annual Meeting in Philadelphia, Pennsylvania, logic characteristics of petroleum reserves, resources, and explora- USA, the Division’s management board elected to rename the stu- tion, including economic implications and petroleum technology. This dent travel award for a distinguished scientist in archaeological new Division award honors two former GSA presidents who made geology. After consulting with his family, the award was officially outstanding contributions to petroleum geoscience: Doris Malkin named the Richard Hay Student Paper/Poster Award. Hay was a Curtis and Hollis Hedberg. Learn more at https://community longstanding member of the Division and had a long and distin- .geosociety.org/energydivision/awards/curtishedberg. guished career in sedimentary geology, mineralogy, and archaeological geology. He is particularly well known for his work on ENVIRONMENTAL & ENGINEERING the Olduvai Gorge and Laetoli Hominid-bearing sites and was GEOLOGY DIVISION awarded the Division’s Rip Rapp Award in 2000. The Division is proud to have its student travel award bear his name. The award is E.B. Burwell, Jr., Award a travel grant for a student (undergraduate or graduate) presenting Nominations due 1 Feb. a paper or poster at GSA’s annual meeting. The grant is competi- Submit nominations to Jim McCalpin at [email protected]. tive and is awarded based on the evaluation of the scientific merit The Edward Burwell, Jr., Award, established by the Division in of the research topic and the clarity of an expanded abstract for 1968, honors the memory of one of the founding members of the the paper or poster prepared by a student for presentation in the Division and the first chief geologist of the U.S. Army Corps of Division’s technical session at the meeting. For more information, Engineers. This award is made to the author or authors of a pub- go to https://community.geosociety.org/geoarchdivision/ lished paper of distinction that advances knowledge concerning awards/student/hay. the principles or practice of engineering geology or of the related fields of applied soil or rock mechanics where the role of geology Claude C. Albritton, Jr., Award is emphasized. The paper that receives the award must (1) deal Nominations due 15 Mar. with engineering geology or a closely related field, and (2) have Submit nominations to [email protected]. been published no more than five years prior to its selection. There Under the auspices of the Geoarchaeology Division, family, are no restrictions on the publisher or publishing agency of the friends, and close associates of Claude C. Albritton, Jr., formed a paper. For more information, go to https://community.geosociety memorial fund in his honor through the GSA Foundation. The .org/eegdivision/awards/burwell. Albritton Award Fund provides scholarships and fellowships for

www.geosociety.org/gsatoday 15 graduate students in the earth sciences or archaeology for research. GEOSCIENCE EDUCATION DIVISION Recipients of the award are students who have (1) an interest in achieving a master’s or Ph.D. degree in earth sciences or archaeol- Biggs Award for Excellence in Earth Science Teaching ogy; (2) an interest in applying earth-science methods to archaeo- Nominations due 15 Mar. logical research; and (3) an interest in a career in teaching and aca- Submit nominations online. demic research. Awards in the amount of US$650 are given in The Biggs Award recognizes innovative and effective teaching in support of thesis or dissertation research, with emphasis on the field college-level earth science. Earth-science instructors and faculty and/or laboratory aspects of the research. For more information, members from any academic institution engaged in undergraduate go to https://community.geosociety.org/geoarchdivision/awards/ education who have been teaching full-time for 10 years or fewer student/albritton. are eligible (part-time teaching is not counted in this requirement). Both peer- and self-nominations will be accepted. This award, Rip Rapp Award administered by the GSA Foundation, is made possible by support Nominations due 15 Feb. from the Donald and Carolyn Biggs Fund, the GSA Geoscience Submit nominations to [email protected]. Education Division, and GSA’s education and outreach program. In 1983, the Division established the “Archaeological Geology An additional travel reimbursement is also available to the recipient Division Award” for outstanding contributions to the interdisciplin- to enable him or her to attend the award presentation at the GSA ary field of archaeological geology. In 1993, the award was offi- Annual Meeting. For more information, go to https://community cially renamed the “Rip Rapp Archaeological Geology Award” in .geosociety.org/gedivision/awards/biggsaward. honor of George “Rip” Rapp Jr. Rapp was one of the primary individuals responsible for establishment of the Division and generously HISTORY AND PHILOSOPHY OF GEOLOGY established a Division award fund with the GSA Foundation. DIVISION Nominations should include a biographical sketch, a statement of outstanding achievements, and a selected bibliography of the nomi- Mary C. Rabbitt History and Philosophy of Geology nee. For more information, go to https://community.geosociety.org/ Award geoarchdivision/awards/riprapp. Nominations due 15 Feb. Submit nominations to Stephen G. Pollock at stephen.pollock@ GEOINFORMATICS DIVISION maine.edu. The Mary C. Rabbitt History and Philosophy of Geology Award Outstanding Contributions in Geoinformatics is presented annually to an individual for exceptional scholarly Award contributions of fundamental importance to our understanding of Nominations due 15 Feb. the history of the geological sciences. Achievements deserving of The Outstanding Contributions in Geoinformatics Award will the award include, but are not limited to, publication of papers or be made to an individual who has contributed in an outstanding books that contribute new and profound insights into the history manner to geology through the application of the principles of of geology based on original research or a synthesis of existing geoinformatics. The individual should be a member of GSA. knowledge. The award was established by the History of Geology For more information, go to https://community.geosociety.org/ Division in 1981 and renamed in 2005 in memory of Mary C. geoinformaticsdivision/awards. Rabbitt, whose bequest has made this award possible. Neither the nominator nor the nominee need be a member of the Division or of GEOPHYSICS & GEODYNAMICS DIVISION GSA. The nomination packet should include (1) a letter detailing the contributions that warrant the award; and (2) the nominee’s George P. Woollard Award current curriculum vitae, including name, title, affiliation, educa- Nominations due 1 Feb. tion, degrees, honors and awards, major career events, and contri- Submit nominations to Carol A. Stein at [email protected]. butions that warrant the award. Monies for the award are adminis- The George P. Woollard Award recognizes outstanding contri- tered by the GSA Foundation. For more information, go to https:// butions to geology through the application of the principles and community.geosociety.org/histphildiv/awards/rabbitt. techniques of geophysics. A highlight of the presentation is the honorary George P. Woollard Technical Lecture by the recipient Gerald M. and Sue T. Friedman Distinguished before the award ceremony. To submit a nomination, please pro- Service Award vide the nominee’s name, contact information, and a short para- Nominations due 15 Feb. graph stating the nominee’s qualifications, including a short Submit nominations to Stephen G. Pollock at stephen.pollock@ summary of their specific work or outcomes and how these have maine.edu. contributed to geology. A curricula vitae, if available, helps, but The Gerald M. and Sue T. Friedman Distinguished Service is not required. Please send as email attachments. Award funds Award, established in 2005, is presented for exceptional service to are administered by the GSA Foundation. For more information, the advancement of our knowledge of the history and philosophy of go to https://community.geosociety.org/geophysicsdivision/ the geological sciences. Neither the nominator nor the nominee need awards/woollard. be a member of the Division or of GSA. The service to the history and philosophy of geology may include, but is not limited to, the discovery of and making available rare source materials; comprehensive bibliographic surveys; organizing meetings and symposia in

16 GSA Today | January 2020 the history and philosophy of geology; and exceptional service to hydrogeology profession and to the GSA Hydrogeology Division. the Division. The nomination packet should include (1) a letter The award is based on a history of sustained creditable service to detailing the contributions that warrant the award; and (2) the nomi- the hydrogeology profession and to the Hydrogeology Division. nee’s current curriculum vitae including name, title, affiliation, edu- Please submit a letter of nomination that describes the distinguished cation, degrees, honors and awards, major career events, and the service that warrants the nomination. Supporting letters are helpful contributions that warrant the award. The award is made possible by but not required. For more information, go to https://community a bequest from the estate of Mary C. Rabbitt. Monies for the award .geosociety.org/hydrodivision/awards/serviceaward. are administered by the GSA Foundation. For more information, go to https://community.geosociety.org/histphildiv/awards/dsa. Kohout Early Career Award Nominations due 1 Feb. History and Philosophy of Geology Student Award Submit nominations to [email protected]. Nominations due 15 June The Kohout Early Career Award will be presented to a distin- Submit nominations to Stephen G. Pollock at stephen.pollock@ guished early career scientist (35 years of age or younger maine.edu. throughout the year in which the award is to be presented or The History and Philosophy of Geology Division provides a stu- within five years of receiving their highest degree or diploma) dent award in the amount of US$1,000 for a paper to be given at the for outstanding achievement in contributing to the hydrogeologic GSA Annual Meeting. Awards may also be given for second place. profession through original research and service and for the The award, established in 2004, is made possible by a bequest from demonstrated potential for continued excellence throughout their the estate of Mary C. Rabbitt. Oral presentations are preferred. career. The nomination package must include (1) at least one let- Faculty advisors may be listed as second author, but not as the lead ter of nomination with a description of the significant contribu- author of the paper. The proposed paper may be (1) a paper in the tions or accomplishments; (2) the nominee’s curriculum vitae history or philosophy of geology; (2) a literature review of ideas with complete bibliography; and (3) at least four supporting let- for a technical work or thesis/dissertation; or (3) some imaginative ters. For more information, go to https://community.geosociety aspect of the history or philosophy of geology we have not thought .org/hydrodivision/awards/kohout. of before. Students should submit an abstract of their proposed talk and a 1,500–2,000-word prospectus for consideration. The awards Birdsall-Dreiss Distinguished Lecturer committee will assist the winners with a review of the abstract, Nominations due 1 Feb. facilitating presentation according to GSA standards. Currently Submit nominations to [email protected]. enrolled undergraduates and graduate students are eligible, as are The Birdsall-Dreiss Distinguished Lecturer is selected based on students who received their degrees at the end of the fall or spring outstanding contributions to hydrogeology or a closely related field terms immediately preceding the GSA Annual Meeting. The award through original research and public communication, and the poten- is open to all students regardless of discipline, provided the pro- tial for continued contributions to the profession. Include at least posed paper is related to the history or philosophy of a geological one letter of nomination, a copy of the nominee’s curriculum vitae, idea/person. The award is made possible by a bequest from the and at least two supporting letters describing the significant contri- estate of Mary C. Rabbitt, and monies for the award are adminis- butions or accomplishments constituting the basis for the nomina- tered by the GSA Foundation. For more information, go to https:// tion. For more information, go to https://community.geosociety community.geosociety.org/histphildiv/awards/student. .org/hydrodivision/birdsall/about2019.

HYDROGEOLOGY DIVISION LIMNOGEOLOGY DIVISION

O.E. Meinzer Award Israel C. Russell Award Nominations due 1 Feb. Nominations due 15 Mar. Submit nominations to [email protected]. Submit nominations to David Finkelstein at [email protected]. The O.E. Meinzer Award recognizes the author or authors of a The Israel C. Russell Award is given for major achievements in publication or body of publications that have significantly advanced limnogeology through contributions in research, teaching, and ser- the science of hydrogeology or a closely related field. The nomina- vice. Nominations should consist of a letter describing the nomi- tion must cite the publication(s) on which the nomination is based nee’s accomplishments in the field of limnogeology (broadly and describe the role of the publication(s) in advancing hydrogeol- defined and including limnogeology, limnology, and paleolimnology or a closely related discipline. Inclusion of up to three additional ogy), service to students and teaching, and contributions to GSA, third-party letters in support of the nomination is encouraged. If as well as a curriculum vitae. For more information, go to https:// you have questions, please contact gsa.hydro.nominations@gmail community.geosociety.org/limnogeologydivision/awards/russell. .com. For more information, go to https://community.geosociety .org/hydrodivision/awards/meinzer. Kerry Kelts Research Award Nominations due 30 June George Burke Maxey Distinguished Service Award Submit nominations to David Finkelstein at [email protected]. Nominations due 1 Feb. The Kerry Kelts Research Award is for undergraduate or Submit nominations to [email protected]. graduate student research related to limnogeology, limnology, or The George Burke Maxey Distinguished Service Award will paleolimnology. For more information, go to https://community be made in recognition of distinguished personal service to the .geosociety.org/limnogeologydivision/awards/kerrykelts.

www.geosociety.org/gsatoday 17 MINERALOGY, GEOCHEMISTRY, PETROLOGY, The Pellas-Ryder Award, which is jointly sponsored by the AND VOLCANOLOGY (MGPV) DIVISION Meteoritical Society and the GSA PGD, is awarded to an undergraduate or graduate student who is first author of the best plan- MGPV awards emphasize achievements in geologic and multidis- etary science paper published in a peer-reviewed scientific journal ciplinary approaches. Geologic work is by nature generalistic and during the year prior to the award. Potential topics are listed on the has an important field component, with Earth as the natural labora- cover of Meteoritics & Planetary Science, and include asteroids, tory. For more information, go to https://community.geosociety comets, craters, interplanetary dust, interstellar medium, lunar .org/mgpvdivision/home. samples, meteors, meteorites, natural satellites, planets, tektites, and origin and history of the Solar System. The award has been MGPV Distinguished Geologic Career Award given since 2001 and honors the memories of meteoriticist Paul Nominations due 31 Mar. Pellas and lunar scientist Graham Ryder. For more information, go Submit nominations to J. Alex Speer at [email protected]. to https://community.geosociety.org/pgd/awards/pellas-ryder. The MGPV Distinguished Geologic Career Award will go to an individual who, throughout his or her career, has made distin- Ronald Greeley Award for Distinguished Service guished contributions in one or more of the following fields of Nominations due 30 June research: mineralogy, geochemistry, petrology, volcanology, with Submit nominations to the PGD management board at emphasis on multidisciplinary, field-based contributions. Nominees https://community.geosociety.org/pgd/aboutus/officers. need not be citizens or residents of the United States, and GSA In 2011, the PGD established the Ronald Greeley Award for membership is not required. The award will not be given posthu- Distinguished Service. This award may be given to those members mously. For more information, go to https://community.geosociety of the PGD, and those outside of the Division and GSA, who have .org/mgpvdivision/awards/dgca. rendered exceptional service to the PGD for a multi-year period. The award is not open to currently serving members of the manage- MGPV Early Career Award ment board, but may be awarded to past members of the manage- Nominations due 31 Mar. ment board who have provided exceptional service to the PGD after Submit nominations to J. Alex Speer at [email protected]. their term on the management board has ended. Nominations for the The MGPV Early Career Award will go to an individual near award, which should include a description of what the nominee has the beginning of his or her professional career who has made distin- given to the PGD community, may be made by any PGD member. guished contributions in one or more of the following fields of For more information, go to https://community.geosociety.org/ research: mineralogy, geochemistry, petrology, and volcanology, pgd/awards/greeley. with emphasis on multidisciplinary, field-based contributions. Nominations are restricted to those who are within eight years past QUATERNARY GEOLOGY & the award of their final degree. Extensions of up to two years will be GEOMORPHOLOGY DIVISION made for nominees who have taken career breaks for family reasons or caused by serious illness. Nominees need not be citizens or resi- Farouk El-Baz Award for Desert Research dents of the United States, and GSA membership is not required. Nominations due 1 Apr. The award will not be given posthumously. For more information, Submit nominations to Anne Chin at [email protected]. go to https://community.geosociety.org/mgpvdivision/awards/ The Farouk El-Baz Award for Desert Research rewards excel- earlycareer. lence in desert geomorphology research worldwide. It is intended to stimulate research in desert environments by recognizing an indi- PLANETARY GEOLOGY DIVISION (PGD) vidual whose research has significantly advanced the understanding of the Quaternary geology and geomorphology of deserts. Although Eugene M. Shoemaker Impact Cratering Award the award primarily recognizes achievement in desert research, Nominations due 19 Aug. the funds that accompany it may be used for further research. Submit nominations online. The award is normally given to one person but may be shared by The Shoemaker Award is for undergraduate or graduate stu- two people if the recognized research was the result of a coequal dents, of any nationality, working in any country, in the disciplines partnership. Any scientist from any country may be nominated. of geology, geophysics, geochemistry, astronomy, or biology. The Because the award recognizes research excellence, self-nomination award, which will include US$2,500, is to be applied to the study is not permitted. Neither nominators nor nominees need be GSA of impact craters, either on Earth or on the other solid bodies in members. Monies for the award are derived from the annual interest the solar system. Areas of study may include but are not necessar- income of the Farouk El-Baz Fund, administered by the GSA ily limited to impact cratering processes; the bodies (asteroidal or Foundation. Nominations should include (1) a statement of the sig- cometary) that make the impacts; or the geological, chemical, or nificance of the nominee’s research; (2) a curriculum vitae; (3) let- biological results of impact cratering. For more information, go to ters of support; and (4) copies of no more than five of the nominee’s https://community.geosociety.org/pgd/awards/shoemaker. most significant publications related to desert research. Please submit electronically unless hardcopy previously approved. For more Pellas-Ryder Award information, go to https://community.geosociety.org/qggdivision/ Nominations due 31 Jan. awards/el-baz. Submit nominations to Jon M. Friedrich at [email protected].

18 GSA Today | January 2020 Distinguished Career Award Sedimentary Geology Division and Structural Geol- Nominations due 1 Apr. ogy and Tectonics Division Joint Award: Stephen E. Submit nominations to Sarah Lewis at [email protected]. Laubach Structural Diagenesis Research Award The Distinguished Career Award is presented annually to a Nominations due 1 Apr. Quaternary geologist or geomorphologist who has demonstrated Submit nominations to Timothy Byrne at [email protected]. excellence in their contributions to science. Because the award The Stephen E. Laubach Structural Diagenesis Research Award recognizes research excellence, self-nomination is not permitted. Fund promotes research combining structural geology and diagen- Neither nominators nor nominees need be GSA members. esis and curriculum development in structural diagenesis. This Nominations should include (1) a brief biographical sketch; award addresses the rapidly growing recognition that fracturing, (2) a statement of no more than 200 words describing the candi- cement precipitation and dissolution, evolving rock mechanical date’s scientific contributions to Quaternary geology and geomor- properties, and other structural diagenetic processes can govern phology; (3) a selected bibliography of no more than 20 titles; recovery of resources and sequestration of material in deeply bur- and (4) a minimum of four letters from colleagues supporting the ied, diagenetically altered and fractured sedimentary rocks. The nomination. Please submit electronically unless hardcopy previ- award highlights the growing need to break down disciplinary ously approved. For more information, go to https://community boundaries between structural geology and sedimentary petrology, .geosociety.org/qggdivision/awards/distinguished-career. exemplified by the work of Dr. Stephen Laubach and colleagues. The award alternates between being awarded by the Sedimentary Kirk Bryan Award for Research Excellence Geology Division on odd-numbered years and the Structural Nominations due 1 Feb. Geology and Tectonics Division on even-numbered years, reflecting Submit nominations to Sarah Lewis at [email protected]. the focus of the award on this cycle. Graduate students, postgradu- The Kirk Bryan Award is bestowed upon the author or authors of a ates, and faculty-level researchers are eligible. For information and published paper of distinction advancing the science of geomorphol- application requirements, go to https://community.geosociety.org/ ogy or some related field, such as Quaternary geology. The paper sedimentarygeologydiv/awards/laubach or https://community constituting the basis of the award must fulfill the following require- .geosociety.org/sgt/awards/laubachaward. ments: (1) the paper will deal with geomorphology or with a border- ing field, and (2) the paper will have been published not more than STRUCTURAL GEOLOGY & TECTONICS five years prior to its selection for the award. Nominations should DIVISION include (1) a letter (1–3 pages long) by the chief nominator outlining the significance and importance of the nominated publication; (2) a Career Contribution Award copy of the publication; (3) reviews of the publications that have Nominations due 1 Mar. appeared in journals, newsletters, or books (if any); and (4) one or Submit nominations to Jeff Amato at [email protected]. more letters from other supporters of the nomination. Please submit The Career Contribution Award is for an individual who electronically unless hardcopy previously approved. For more infor- throughout his or her career has made numerous distinguished mation, go to https://community.geosociety.org/qggdivision/ contributions that have clearly advanced the science of structural awards/kirkbryanaward. geology or tectonics. Nominees need not be citizens or residents of the United States, and GSA membership is not required. SEDIMENTARY GEOLOGY DIVISION Nominations should include the following information: (1) name of nominee, present institutional affiliation, and address; (2) Laurence L. Sloss Award for Sedimentary Geology summary statement of nominee’s major career contributions to Nominations due 15 Feb. the science of structural geology and tectonics; (3) selected key Submit nominations to Brett McLaurin at [email protected]. published works of the nominee; and (4) name and address of the The Laurence L. Sloss Award for Sedimentary Geology is given nominator. For more information, go to https://community annually to a sedimentary geologist whose lifetime achievements .geosociety.org/sgt/awards/careercontribution. best exemplify those of Larry Sloss—i.e., achievements that contribute widely to the field of sedimentary geology and service to Outstanding Publication Award GSA. Submit (1) a cover letter describing the nominee’s accom- Nominations due 1 Mar. plishments in sedimentary geology and contributions to GSA; Submit nominations to Julie Newman at [email protected]. (2) a curriculum vitae; and (3) any additional supporting letters The Outstanding Publication Award is given annually for a pub- electronically. Nomination materials remain active for three years. lished work (paper, book, or map) of exceptional distinction that Monies for the award are derived from the annual interest income clearly advances the science of structural geology or tectonics. of the Laurence L. Sloss Award for Sedimentary Geology Fund, Nominations include: (1) a full citation; (2) nomination (as short as a administered by the GSA Foundation. For more information, go to paragraph; letters or reviews may also be included); and (3) the name https://community.geosociety.org/sedimentarygeologydiv/ and address of the nominator. For more information, go to https:// awards/sloss. community.geosociety.org/sgt/awards/outstandingpublication.

www.geosociety.org/gsatoday 19 2020 Graduate Student Research Grants

The primary role of the GSA research grants program is to provide partial support of master’s and doctoral thesis research in the geological sciences for graduate students enrolled in universities in the United States, Canada, Mexico, and Central America. In 2019, the program awarded US$812,000 to 392 graduate students (~52% of the 748 who applied), with an average grant of US$2,071. GSA strongly encourages women, minorities, persons with disabilities, and other groups that are underrepresented in the geosciences to participate fully in this program. Apply online (www.geosociety.org/gradgrants) starting 1 Dec. 2019. Submissions must be completed by 3 Feb. 2020, at 5 p.m. MST. Folarin Kolawole used a 2018 research grant to fund a study of pre-existing structures in the Precambrian basement rocks in the Arbuckle Mountains, Oklahoma, USA, to assess their implications for induced seismicity.

More Research Grants for Graduate Students and Others GSA provides members with additional opportunities to apply for research funding. Applications for these programs will be accepted starting 1 Dec. 2019. Submissions must be completed by 3 Feb. 2020, at 5 p.m. MST.

• Farouk El-Baz Student Research Grant—Desert studies www.geosociety.org/gradgrants • Awards for Geochronology Student Research2 (AGeS2) [email protected] Program—Geochronology +1-303-357-1025 • ZEISS-GSA Research Grant—Microscopy

Call for GSA Fellowship Nominations Travel Awards to 2020 Southeastern- Northeastern Joint Section Meeting Deadline: 1 Feb. Nominate a deserving colleague with the honor of GSA Application deadline: 5 Feb. Fellowship. GSA members are elected to Fellowship in recognition Students nationwide who work full-time, care for dependents, of distinguished contributions to the geosciences. See election or are considered non-traditional are eligible to apply for a travel requirements by visiting www.geosociety.org/Fellowship. award to attend the Southeastern and Northeastern Joint Section Meeting, 20–22 March, in Reston, Virginia, USA. Funding will How to Nominate cover meeting registration, lodging, transportation, food, and The primary nominator, who must be a GSA member and Fellow: dependent care. Send questions to Tahlia Bear, tbear@geosociety .org. Learn more at https://www.geosociety.org/gsa/about/ 1. Writes a letter of support; sections/GSA/Sections/se/students.aspx#travel for the Southeastern Section and https://www.geosociety.org/gsa/about/ 2. Collects two additional letters of support (one must be from a sections/gsa/Sections/ne/home.aspx for the Northeastern Section. Fellow; both must be GSA members);

3. Obtains nominee’s current CV or résumé (2-page limit); and

4. Completes the online nomination form and uploads letters and CV at www.geosociety.org/FellowNoms.

20 GSA Today | January 2020 J. David Lowell Field Camp Scholarships

GSA and the GSA Foundation are proud to announce that J. David Lowell Field Camp Scholarships will be available to undergraduate geology students for the summer of 2020. These scholarships will provide students with US$2,000 each to attend the field camp of their choice. Applications are reviewed based on diversity, economic/financial need, and merit. Application deadline: 27 March. Learn more at https://www.geosociety.org/field-experiences.

Questions? Contact Jennifer Nocerino, [email protected].

Jeng Hann Chong, 2019 Field Camp Scholar Awardee in Ermont, Montana, USA.

Available through GSA

itute ces Inst eoscien G erican G S The Am A M E The Geoscience M Handbook 2016: .99 B

E AGI Data Sheets,

$ R

Fifth Edition P

I 49 C Edited and compiled by

E Mark B. Carpenter and Christopher M. Keane Graphics by Kat Cantne GSA-ExxonMobil Bighorn Basin Field Published by the American Award Geosciences Institute. Field dates: 19–26 July 2020 IENCE DATASHEETS, 478 p., This all-expenses–covered field seminar in the Bighorn Basin GEOSC 6 THE OK 201 5"× 8" spiral bound, of north-central Wyoming emphasizes multidisciplinary inte- DBO Edition HAN ts, Fifth ISBN 9780913312476 ta Shee grated basin analysis. Undergraduate students, graduate students, AGI Da list price $59.99 d by ompile r C arpente rk B. C ane GSA member price $49.99 and faculty are invited to apply. Applications will open in early Ma r M. Ke hristophe er C t Cantn s by Ka February. Deadline: 27 March. Graphic

Questions? Contact Jennifer Nocerino at [email protected]. https://www.geosociety.org/field-experiences

toll-free 1.888.443.4472 | +1.303.357.1000, option 3 | [email protected] BUY ONLINE } http://rock.geosociety.org/store/

www.geosociety.org/gsatoday 21 Explore amazing geoscience opportunities on America’s public lands

GSA GeoCorpsTM America Program

Summer 2020 GeoCorps Positions—Apply by 2 Feb. GeoCorps provides dozens of exciting geoscience opportunities on federal public lands. Project areas include a wide variety of topics, such as paleontology, hydrology, geohazards, caves/karst, GIS/mapping, and more.

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Summer 2020 GIP Positions—Apply by 13 Jan. The National Park Service (NPS) GIP program places college students and early career professionals in National Park Service units for three months to one year to assist with geology and integrated science projects. This program is a partnership between NPS, the Geological Society of America, and the Stewards Individual Placement Program.

www.geosociety.org/gip

Stewards Individual Geological Society of America National Park Service Placement Program Foundation (GSAF)

22 GSA Today | January 2020 Geologic Excursions in Southestern North America

A Field Guide 55 This volume, prepared as part of the Geological Society of America Annual Meeting in Phoenix, includes eld guides covering aspects of the spectacular geology of southwestern North America. Field guides tackle the geology of the southern

Geologic Excursions in Southwestern North America Geologic Excursions Colorado Plateau, from paleoenvironments of Petri ed Forest National Park, to Jurassic sand dunes of southern Utah, to the San Francisco Volcanic Field, to IN SOUTWESTEN NOT AMEICA Edited by Philip A. Pearthree awesome Grand Canyon. Appropriately for the 50th anniversary of the rst lunar landing, one trip visits sites in northern Arizona that helped prepare astronauts for their missions. Several guides address aspects of the Proterozoic to Cenozoic tectonic development of the Transition Zone between the Colorado Plateau and the Basin and Range. Exploring the Basin and Range, guides feature Laramide tectonism and ore deposit G development, features associated with large-magnitude Ceno- zoic extensional tectonism, large Miocene volcanic centers in northwestern Arizona, and tectonism and development of the lower Colorado River. Three eld guides explore various aspects of northwestern Mexico, including tectonics and ore deposits of Sonora, fauna and paleoenvironments of Colorado River delta deposits, and volcanism in central Baja California. Finally, a guide analyzes anthropogenic earth ssures that have developed in the Phoenix metropolitan area. FLD055, 553 p., ISBN 9780813700557 | list price $80.00 | member price .00

GSA BOOKS } http://rock.geosociety.org/store/

toll-free 1.888.443.4472 | +1.303.357.1000, option 3 | [email protected] CALL FOR COMMITTEE SERVICE Make an Impact by Serving on a GSA Committee ®

Deadline: 15 June Qualifications: Members should have knowledge of those who Terms begin 1 July 2021 (unless otherwise indicated) have made “distinct contributions to geologic knowledge through the If you are looking for the opportunity to work toward a common application of physics and chemistry to the solution of geologic prob- goal, give back to GSA, network, and make a difference, then we invite lems.” All of the committee’s work will be accomplished during the you to volunteer (or nominate a fellow GSA member) to serve on a months of February and March; committee decisions must be made Society committee or as a GSA representative to another organization. by 1 April. Learn more and access the nomination form at https://rock .geosociety.org/Nominations/CS.aspx. Use the online form to Diversity in the Geosciences Committee make a nomination or self-nomination. Open positions and quali- Three member-at-large vacancies (three-year term; E, M) fication information is online at https://rock.geosociety.org/ This committee provides advice and support to GSA Council forms/viewopenpositions.asp. GSA headquarters contact: and raises awareness and initiates activities and programs that will Dominique Olvera, P.O. Box 9140, Boulder, CO 80301-9140, USA; increase opportunities for diverse groups in the geosciences, par- +1-303-357-1060; [email protected]. ticularly along the dimensions of race, ethnicity, gender, and physical abilities. The committee is also charged with stimulating Academic and Applied Geoscience Relations recruitment and promoting positive career development. Committee Qualifications: Members of this committee must have professional One member-at-large vacancy (industry-related field) (three- or experiential knowledge of issues relevant to the goals of the com- year term; E, M) mittee. GSA strongly encourages nominations of members who are This committee is charged with strengthening and expanding from the communities for which this committee is expected to serve. relations between GSA members in applied and academic geosciences. As such, it proactively coordinates the Society’s effort to Education Committee facilitate greater cooperation between academia, industry, and Member-at-large vacancy (four-year term; E, M); two-year- government geoscientists. college faculty representative vacancy (four-year term; E, M); Qualifications: Committee members must work in academia, pre-college educator (K–12) representative vacancy (four-year industry, or government and be committed to developing a better term; E, M); graduate student representative vacancy (two- integration of applied and academic science in GSA meetings, year term; B, E, M) publications, short courses, field trips, and education and outreach This committee works with GSA members representing a wide programs. Professional interests: environmental and engineering range of education sectors to develop informal, pre-college (K–12), geology, hydrogeology, karst, Quaternary geology and geomor- undergraduate, and graduate earth-science education and outreach phology, structural geology and tectonics, sedimentary geology. objectives and initiatives. Members must also be active in one or more GSA Division. Qualifications: Members of this committee must have the ability to work with other interested scientific organizations and Annual Program Committee science teachers’ groups. Three vacancies: two members-at-large (four-year term; B, E, M); one student member-at-large (two-year term; B, E, M) Geology and Public Policy Committee This committee is charged with developing a plan for increasing Two member-at-large vacancies (three-year term; E, M) the quality of the annual and other society-sponsored meetings in This committee provides advice on public-policy matters to terms of science, education, and outreach; evaluating the technical GSA Council and leadership by monitoring and assessing interna- and scientific programs annually to identify modifications neces- tional, national, and regional science policy; formulating and sary for accomplishing the Society’s long-range goals; conducting recommending position statements; and sponsoring topical white short- and long-range planning for Society meetings as a whole; and papers. This committee also encourages active engagement in developing a long-term logistical plan/strategy for the technical pro- geoscience policy by GSA members. grams of all GSA meetings and other society-sponsored meetings. Qualifications: Members should have experience with public- One member-at-large should have previous meeting experience. policy issues involving the science of geology; the ability to develop, disseminate, and translate information from the geologic Arthur L. Day Medal Award sciences into useful forms for the general public and for GSA Two member-at-large vacancies (three-year term; E, T) members; and familiarity with appropriate techniques for the This committee selects candidates for the Arthur L. Day Medal. dissemination of information.

B—meets in Boulder or elsewhere; E—communicates by phone or electronically; M—meets at the Annual Meeting; T—extensive time commitment required during application review period.

24 GSA Today | January 2020 GSA International This committee reviews and approves Penrose Conference and Two member-at-large vacancies (four-year terms; E, M) Thompson Field Forum proposals and recommends and imple- Serve as GSA’s coordination and communication resource ments guidelines for the success of these meetings. seeking to promote, create, and enhance opportunities for inter- Qualifications: Committee members must be early career national cooperation related to the scientific, educational, and scientists/professionals. outreach missions shared by GSA and like-minded professional societies, educational institutions, and government agencies. Penrose Medal Award Committee Build collaborative relationships with GSA Divisions and Two member-at-large vacancies (three-year term; E, T) Associated Societies on international issues, and serve as a Members of this committee select candidates for the Penrose channel for member-generated proposals for international themes. Medal. Emphasis is placed on “eminent research in pure geology, which marks a major advance in the science of geology.” Joint Technical Program Committee Qualifications: Members should be familiar with outstanding Two members-at-large: marine/coastal geology (two-year achievers in the geosciences worthy of consideration for the honor. term: 1 Dec. 2020–30 Nov. 2022; B, E) All of the committee’s work will be accomplished during the Members of this committee help finalize the technical program months of February and March; committee decisions must be for GSA’s annual meetings by participating in the Web-based made by 1 April. selection and scheduling of abstracts, as well as topical session proposal review. Professional Development Committee Qualifications: Members must be familiar with computers and Member-at-large vacancy (three-year term; E) the Web, be a specialist in one of the specified fields, and be avail- This committee directs, advises, and monitors GSA’s profes- able in late July–mid-August for the organization of the annual sional development program; reviews and approves proposals; meeting technical program. recommends and implements guideline changes; and monitors the scientific quality of courses offered. Membership and Fellowship Committee Qualifications: Members must be familiar with professional Member-at-large vacancy: industry (three-year term; B, T) development programs or have adult-education teaching experience. This committee contributes to the growth of the GSA membership, enhances the member experience, and serves a vital role in Publications Committee the selection of Fellows, with the goal of fostering a membership Member-at-large vacancy (four-year term; B, E, M) community as pertinent and global as our science. Committee The primary responsibilities of the committee are nomination of members should understand what various segments of members candidates for editors when positions become vacant; reviewing the want from GSA and should be familiar with outstanding achievers quality and health of each Society publication; and providing an in the geosciences worthy of fellowship. annual report to Council that includes recommendations for changes Qualifications: Committee members should have experience in in page charges, subsidies, or any other publishing matter on which benefit, recruitment, and retention programs. Council must make a decision. To carry out this charge, headquarters will provide the committee with all necessary financial information. Nominations Committee Member-at-large vacancy: industry (three-year term; B, E) Research Grants Committee This committee recommends nominees to GSA Council for the Fifteen member-at-large vacancies with various specialties positions of GSA Officers and Councilors, committee members, (three-year term; B, T) and Society representatives to other permanent groups. The primary function of this committee is to evaluate approxi- Qualifications: Members must be familiar with a broad range mately 800 graduate student research grant applications and award of well-known and highly respected geoscientists. specific grants to chosen recipients, including some named grants supported by funds within the GSA Foundation. North American Commission on Stratigraphic Qualifications: Members may come from any sector (aca- Nomenclature demia, government, industry, etc.) and should have experience in GSA representative (three-year term; E, M) directing research projects and in evaluating research grant appli- This committee develops statements of stratigraphic principles, cations. GSA strongly encourages nominations of geoscientists recommends procedures applicable to classification and nomen- from diverse backgrounds and institutions, particularly from clature of stratigraphic and related units, reviews problems in clas- minority serving institutions. Extensive time commitment sifying and naming stratigraphic and related unites, and formu- required 15 Feb.–15 Apr.; each member reviews approximately lates expressions of judgment on these matters. 40 applications. More information: www.geosociety.org/ Qualifications: Members must be familiar with the fields of gradgrants. paleontology, biostratigraphy, and stratigraphy. Young Scientist Award (Donath Medal) Committee Penrose Conference and Thompson Field Forum Member-at-large vacancy (three-year term; E, T) Committee Committee members investigate the achievements of young Two member-at-large vacancies: early career scientist (three- scientists who should be considered for this award and make year term; E) recommendations to GSA Council.

www.geosociety.org/gsatoday 25 Qualifications: Members should have knowledge of young scientists with “outstanding achievement(s) in contributing to geo- Committee, Section, and Division Publish Your Research logic knowledge through original research which marks a major Volunteers: Council Thanks You! The Edwards Aquifer: The Past, Present, advance in the earth sciences.” All of the committee’s work will and Future of a Vital Water Resource Edited by John M. Sharp Jr., Ronald T. Green, be accomplished during the months of February and March; com- GSA Council acknowledges the many member-volunteers and Geary M. Schindel as a GSA Book mittee decisions must be made by 1 April. who, over the years, have contributed to the Society and to our

science through involvement in the affairs of the GSA. Your Field Guide 55 time, talent, and expertise help build a solid and lasting Society. Memoir 215 America North Southwestern in Excursions Geologic Geologic Excursions Special Paper 543 IN SOUTWESTEN NOT AMEICA Looking for international The Physical Geography and Edited by Philip A. Pearthree exposure in a noteworthy Geology of the Driftless Area The areer and ontributions of ames nox book series?

The Physical Geography and Geology of the Driftless Area: The Career and Contributions of James C. Knox

Interested in online Discover Recent, Rare, ahead-of-print publication and Out-of-Print Books for accepted chapters?

Geology of Mineral Resources, Pegmatites, Edited b Eric arson Elmo awling ichael aniels and ohn Attig Paleontology, Fossil Specimens, Mineral Books and Specimens, Select Mines and Mining Locations, Learn about careers in renewable energy, hydrology, Ore Deposits, Mineral Exploration and government through GSA’s GeoCareers SPECIAL PAPERS are state-of-the-art treatments Publish your in-depth http://www.booksgeology.com Webinars. View recordings of past webinars in of rapidly evolving subjects; most symposium-based WE PURCHASE BOOKS, SPECIMENS, AND ENTIRE COLLECTIONS petroleum, minerals, and environmental consulting volumes fall into this category. geoscience research with at https://www.geosociety.org/careers. MS Book and Mineral Company GSA Books: MSBOOKS @ BOOKSGEOLOGY.CO M MEMOIRS are likely to remain the authoritative P.O. Box 6774, Lake Charles, LA 70606-6774 USA reference on a subject for a number of years. www.geosociety.org

FIELD GUIDES feature field trips held primarily at /book-guide GSA meetings. Well-illustrated papers include detailed Take this book along for a ride as you roll across the red plains east to the Ozark Plateau, road logs and maps. west to the Panhandle, or south to the Ouachita, Arbuckle, and Wichita Mountains.

} PROPOSE A BOOK YOU HAVE AUTHORED (not compiled): ROADSIDE GEOLOGY OF OKLAHOMA Include the table of contents, the background and significance of the proposed book, and the abstract. N H. S } Stringent peer review } PROPOSE AN EDITED VOLUME: Dinosaur tracks preserved in sandstone, knobs of granite rising from Include a list of chapter titles and authors with } Included in the Web of Science Group the plains, and springs cascading down limestone cli s are just a few affiliations, the background and significance of the Book Citation Index and contribute to of the fascinating geologic features discussed in Roadside Geology of proposed volume, and any available chapter abstracts. H factors Oklahoma, a guide to more than 35 roads that crisscross the state. } ONLINE FIRST: Special Paper and Memoir

Geologist Neil Suneson tells you what to look for along the roads, points } ADDITIONAL INFORMATION: chapters publish online ahead of print www.geosociety.org/book-guide, or e-mail E-book and print you to nearby parks with interesting rocks and crystals, and recounts [email protected] with specific questions } the history of radium mineral baths, coal mines, fossil excavations, about your project. } Indexed in CrossRef, GeoRef, and abstract and petroleum drilling, not to mention the rush for nonexistent gold services in the Wichita Mountains. } GSA BOOKS SCIENCE EDITORS } Searchable through Google BooksTM Joan Florsheim—University of California Santa Barbara 400 pages • 6 x 9 • full color • 220 color photographs Christian Koeberl—University of Vienna PLUS: } Responsive editorial staff 100 color maps and illustrations • glossary • references • index —Northern Arizona University } Professional copyediting and layout paper $26.00 • Item 204 • ISBN 978-0-87842-697-3 Nancy Riggs } Global marketing NEW TO THE Mountain Press SERIES! PUBLISHING COMPANY P.O. Box 2399 • Missoula, MT 59806 • 406-728-1900 800-234-5308 • [email protected] When you publish with GSA Books, you can be assured of www.mountain-press.com a high-quality publication and a hassle-free experience. 26 GSA Today | January 2020 www.gsapubs.org Publish Your Research

The Edwards Aquifer: The Past, Present, and Future of a Vital Water Resource Edited by John M. Sharp Jr., Ronald T. Green, and Geary M. Schindel as a GSA Book

Field Guide 55 Memoir 215 America North Southwestern in Excursions Geologic Geologic Excursions Special Paper 543 IN SOUTWESTEN NOT AMEICA Looking for international The Physical Geography and Edited by Philip A. Pearthree exposure in a noteworthy Geology of the Driftless Area The areer and ontributions of ames nox book series?

The Physical Geography and Geology of the Driftless Area: The Career and Contributions of James C. Knox

Interested in online ahead-of-print publication for accepted chapters?

Edited b Eric arson Elmo awling ichael aniels and ohn Attig

SPECIAL PAPERS are state-of-the-art treatments of rapidly evolving subjects; most symposium-based Publish your in-depth volumes fall into this category. geoscience research with GSA Books: MEMOIRS are likely to remain the authoritative reference on a subject for a number of years. www.geosociety.org

FIELD GUIDES feature field trips held primarily at /book-guide GSA meetings. Well-illustrated papers include detailed road logs and maps.

} PROPOSE A BOOK YOU HAVE AUTHORED (not compiled): Include the table of contents, the background and significance of the proposed book, and the abstract. } Stringent peer review } PROPOSE AN EDITED VOLUME: Include a list of chapter titles and authors with } Included in the Web of Science Group affiliations, the background and significance of the Book Citation Index and contribute to proposed volume, and any available chapter abstracts. H factors } ONLINE FIRST: Special Paper and Memoir } ADDITIONAL INFORMATION: chapters publish online ahead of print www.geosociety.org/book-guide, or e-mail E-book and print [email protected] with specific questions } about your project. } Indexed in CrossRef, GeoRef, and abstract services } GSA BOOKS SCIENCE EDITORS } Searchable through Google BooksTM Joan Florsheim—University of California Santa Barbara Christian Koeberl—University of Vienna PLUS: } Responsive editorial staff Nancy Riggs—Northern Arizona University } Professional copyediting and layout } Global marketing

When you publish with GSA Books, you can be assured of a high-quality publication and a hassle-free experience. www.gsapubs.org Welcome New GSA Members! The following new members joined between 7 March and 24 July 2019 and were approved by GSA Council at its fall meeting.

PROFESSIONALS Byron W. King Jill VanTongeren Christen Helou Kanatbek Abdrakhmatov James King Brent James Voorhees Matthew Herman Brent Adrian Leonardo Lagoeiro Matt Wilson Isidro Hernandez Hoori Ajami Jeffrey Scott Leavitt Weerachat Wiwegwin Margaret Anne Holahan Stephanie Anagnoson Jason Lee Jessica Wold Jahangeer Jahangeer Ricardo Araujo Taylor Lee Sergey V. Yudintsev Gilby Jepson Kevin James Bell Xiubin Lin Qinglu Zeng Nick Karl Ann Elizabeth Benbow Brian Henry Luckman Nicolaus Zentner Tarra Beth Keathley Kristen Benchley Nathan Manser Mingzhi Zhang Joseph Kemper Gilbert Bernhardt Liliana Marin Taylor Kenyon Steven Bill Jeffrey Warren Martz EARLY CAREER Matthew Khargie Marcus P. Borom Giacomo Mazzolla PROFESSIONALS Tessa King Suzanne Bourret Judy Mcilrath Mehrdad Sardar Abadi Michael H. Knez Stephen Joseph Boyer Rubi Medrano-Sanchez Mansour H. Al-hashim Alexander Thomas Koch Charles Michael Brehm Thomas Meixner Marco A. Altamirano Codyann Angela Kolp Walter C. Burt James William Melton Baterdene Baatarjav Kimberly Megan Kramer James Callegary Jorge Mendieta Carly Marie Bader Matthew E. Kruse Hanlin Chen Michael Mobile JP Bauer Brett LaCoy Jianbo Chen George J. Morgan Cecilia Benavente Justin Lashley David Chew Mike Muggridge Kathryn Boyd Yang Li Elizabeth Cochran Hanna Nekvasil Marc Campeny Kyle Andrew Lind Douglas Coleman Thankgod Okenna Chance Isaac Carantes Elizabeth K. Loesch Roger Cooper Amalie Jo Orme Kewei Chen Michael Joseph Loya Jr. Robert E. Criss Richard Mark Palin Xinming Chen Xiaocong Luan Stephen John Culver John Parrish Laurel B. Childress Kayla Maze Robert S. Detrick Nicolás Philippi Queirolo Babita Rani Choudhary Caitlin McHugh Kara R. Dotter Aude Picard William Classon Hannah McIlwain Lynne Drakos Jose Fernando Pineiro Erica Conorozzo Kimber Lea McLennan Veronica Bray Durfey Justin Polasek Duncan Cook Julie Menard Allison Daun Elzer Sara Post Katherine Crabill Buyanzaya Munkhjargal Jr. Nick Engdahl Robin Elizabeth Reed Andrew Crabtree Madison Myers Mingshi Feng James A. Ridenour Nick Crouch Leigh Grann Oden Nels Forsman Cari Roughley Piyush Dahal Jason W. Pearl Cecylia Fortunska James Nicholas Samson Mana Dembo Alexander M. Peck Sean Patrick Fox Tapabrato Sarkar Joel D. Despain Jacob Petersen-Perlman Ernest Chi Fru Aya Schneider Elizabeth Diaz Esther Pischel Al Garand Daniel G. Schwartzberg Will Earle Dingee Chloe Plet Ian Glasspool Gary R. Scott Katherine Dobson Anwar Qadir Terry Gulliver Elena Victoria Sherriff Carlie Duda Brian Reggiani Mehmet Hacihanefioglu Michal Skiba Dennis Eck Megan Riccobono Lawrence Hamilton Heather F. Smith Sedona Kay Edgar Susan Richmond Kristen Jean Hannon Samantha Smith Lauren D. Ehlers Irmaris Rivera-Llavona Robert George Hatfield Dongfang Song Dave Eibert Corrine Rojas Joanna Hodge Christy Swann Funmilayo M. Ekundayo Cat Samson Corey James Holton Ryoya Takahashi Cody James Paul Fauth Loren Paul Secor Patrick N. Hu Andrew Tekle-Cadman Michael Andrue Fina Alicia Sendrowski Jordi Ibañez Insa Zachary D. Tessler Samuel C. Freeman David Shemtov Joel P.L. Johnson Larry Thrasher Caitlin Gionfriddo Cody Stanley Miroslav Kalinaj Virginia Trimble Jian Gong Adam Stoutenburgh Clay R. Kelleher Katerina Tsakiri Samuel Graf John Thornton David Bryan Kemp Shane Tyrrell Victoria Grix Burenjargal Ulziiburen Linda Kennedy Victor Van Beuren Victor E. Guevara Marissa Anne Vara Thiago Kersting John Vanregenmorter Sean Burley Haggett Denise Ana Viana

28 GSA Today | January 2020 Elizette Viramontes Energy Geology PERCENTAGES OF NEW Duo Wang Daniel K. Bird MEMBERS BY MEMBER TYPE Zhou Wang Peter Kwame Boateng Affiliates, 3% Lei Wu Jordan J. Brown K–12 Teachers, Ying Zhou Fuyun Cong 2% Professionals, 14% Sitney Elizabeth Day STUDENTS Daniella Gutierrez Easley (by area of interest) Katherine Garcia Jacob Thomas Grigsby Archaeological Geology Kaely J. Harris Audra Darcy Skylar Jace Kaminski Early Career Mary Margaret Hagen Erlick Chloe Rose Kent Professionals, 12% Jayde Hirniak Erin Joy Merry Charlotte Holt Courtney Beth Milledge Simon Krane Robert W. Mohollen Jr. Students, 69% Victoria C. Pagano Kristen Morris Colleen Marie Ranieri Charlie John O’Grady Sarah Caldwell Steele Vanessa Okeibunor Paula Carolina Ugalde Priya Patel Patrick Michael Perry Biogeosciences Thomas Orion Schubert Hannah Paulina Boelts Joseph Franklin Spendlove Diana Petrova Bojanvoa Heather L. Troglia Rebekah Hanrahan Olivia Underhill Rao Nargis Jahan Zhen Wang Eshani Hettiarachchi Marina Vanderberg Jennifer Mills Stephanie Jane White Katie Hill Lucinda Vranizan Ingemar Ohlsson Jason Witzel W. Matthew Hintz Annelise Nicole Waling Cecilia Rose Thomas Zhongrui Wu Sarah R. Hudson Caylynn Westberg Omotinuolawa Vincent Austin J. Jensen Tyler White Qiong Wu Engineering Geology Christopher Mien Jimenez Jarrod Lee Williams Trent Adams Junaid Ali Khattak Mikaela Williams Climatology/Meteorology George M. Barth III Sabrina Koetter Ashley Wray Kimberly Coral Bowman Raja Das Abigail Lambert Nicole Czwakiel David A. De Guzman John Preston Liles Geography William Downs Caila M. Holley Colton John Linville Matthew J. Bondar Andrew Daniel Everett Hans Hubble Naake Anna Liu Madeline M. Kelley Kristen Joyse Izabella Anastassja Ogilvie Alcira Nicole Lucha Timi Laney Christina Nicole Lizzo Angelica Melissa Preciado Stephanie Nicole Marquez Frederic Mitchell III Tyler Michael Miller Anton Joseph Reed Christopher Mateja Yasiri Nunez Ethan Ernest Rogers Kyle Merandi Geoinformatics Erika Ornouski Hannah Smith Mika Mollenkopf Wren Amitai Cory S. Wallace Emma P. Myrick Charlie Horovitz Economic Geology Molly Norris David Travers Losert William Benedict Environmental Science Joseph Ikechukwu Nwachukwu Cameron Micah Lott Max Britt Xavier Y. Abdullahi Devon Parfait Crystal Wespestad Juan Carlos Cuellar Quispe Marissa Acosta Connor S. Prentiss Megan Luisa White Stephanie C. Evans Rene C. Aerts Allyson G. Reeves Joshua A. Hardt Briana Allison Jacob Russett Geology and Health William Rexton Jarvis Joseph Anthony Baldus Jean Sabety James Allen Jr. Kelsey Jensen Jo Black Karla Sofía Santiago Rivera Brandon Scott Westmoreland William Laaker Ailing Chen Catherine Mae Seguin Richard Fointein Lung Lily Chuang Emma Steorts Geophysics/Tectonophysics Taylor A. McPherson Sarah Jean Combs Tristan Stetson Gary Aldaz Evangelia Marie Murgia Laura E. Dickson Gretchen Stokes Ryan Austin Armstrong Sodnom Oyungerel Breanna Duquette Molly Strain Marcus Vinicius Azevedo Edward Curtis Vogler Ruger Erin Evans Stephen Michael Sullivan V de Oliveira Pacheco Patrick Sweeney Jackson Joseph Galloway Ommay Tamanna Tahera Leslie Alejandra Bernal Landon D. Velarde Laura Glaser Wyatt Tatge Mark Robert Domin Mario G. Velazquez Kailee Gokey Cody Trenholm Sidney K. Evans Bizhou Zhu Colby Alan Gouge Nathalie N. Turenne Lazaro Valentin Garza

www.geosociety.org/gsatoday 29 Mary Catherine Hambrick Claudia R. Corona Olivia Rigsby Traister Oglesbee Christiano Bryce Irving Oscar Coronel Monika Barbara Szokaluk Aleysa Orr Daniel J. Jones Kristen Diana Cuellar Yukai Tang Calum Andrew Perry Cecilia Renee Kayser Ashley Cara Divincenzo Emilio Tesin Mollie Pope Danielle Kinkel Jessalyn Gonzalez Jonathan Prouty Nathaniel Klema Jordan Jenckes Mineralogy/Geochemistry/ Zsuzsanna Kitti Pusztai Brianna N. Mellerson Adam M. Jones Petrology/Volcanology Carlos A. Quiroz Laura Nohemi Mosqueda Amar Kolapkar Mariana Yolotzin Alcántara Elizabeth Regina Emily Carrero Mustelier Nathaniel Ervin Krautheim Ellen Wright Alexander Arkadeep Roy Heidi Myers Daphne Kuta Kim Allen Nicolas Rozo Sarah Ann Nolt-Caraway Lindsey M. Langer Scianna J. Americo Rachelle Sanchez Juliette Saux Amber Lidell Ian R. Anderson Kyle Taylor Sarver Jenna Syposs Sayantan Majumdar Patricia Ascanio-Pellon Mohammad Shohel Adriana Lauren Traviati Micah Marcy Ronald J. Ballard III Vani Singh Victor Hugo Trujillo Brynn Marion Kylie Ann Barber Noël E. Skocko Ryan Lewis Turner Jordon Patrick Massey Andrew Bollinger Anthony Phillip Sorensen II Ashley Marie McGill Kyle J. Brady Lindsey Ann Speights Geoscience Education Jennifer Ann Miller Kasey Lynn Buckley Sally Stevens Christy M. Bebeau Christopher M. Morrow Haley Elizabeth Cabaniss Dan Sullivan Hannah Bullington Nabil Murshed Kassandra B. Cabral Rachel Sweeten Cameron Dony Caroline H. Nellis Mason Curtis Caperton Alanna Tabares Sadie M. Durning Chandler Noyes Marie Carr Ashish Kumar Tiwari Heather A. Fell Kopo Veronicah Oromeng Tristan Catalano Falon Treis Joseph M. Gutierrez Destini N. Petitt Si Athena Chen Alyssa Troia Julia Kalinin Herzfeld Goabaone Jaqueline Natalea Cohen Charles Wallace Yasuko Susana Hirata Ramatlapeng Sam Couch Adym Paul Warhurst Laura Horsley Jose G. Ramos Brannon Cox Nikolas Watson Tess Johnson Aeon Russo Tristanna Lynn Crapo Joshua Weimer Genifer Lara Andrea Estephanie Saavedra Joseph Davies Stephanie Welch Eliezer Valentin Martinez Karen Silva Samantha Marie Dunn Erica R. Wolfe Lisa Marie Matthews Julia Valentina Soares Adam Patrick Forreider Michelle Marie Worek Lawrence Jason Medlin Rebekah Lynn Sowders Marcos Eduardo Gamboa Emily Wright Mckayla Lynn Meier Scott Stokes Hermes Garcia Feihong Ye Miyako Lee Yoneko Namba Abdul Rahman Turay Samantha Garcia Steven Enrico Young Jr. Tammy Phrakonkham Mujen Wang Sarah Rose Gartner Minru Zhao Madison E. Wayt Xin Guo Geothermal Ashlie Willis-Crandall Douglas Hafften Paleo Sciences Jared A. Lutrus Alicia Jean Wooten-Cherry Rachelle Hart Maryse Dominique Biernat Michelle Zahn Jennifer A. Hensley Colby W. Brown History/Philosophy of Sarah Zurkee Carly Marie Hoeft Matthew Joseph Butrim Geology Kimberly Jean Hutchinson Brian Conway Jalen Cox Karst Michelle Jordan Nicholas William Conway Thomas Rossetter Anderson Gill Drescher Samuel Thomas Kaelin Aaron English Thomas Edward Nordstrand Junyao Kang Kiersten Kelly Formoso Hydrogeology/Hydrology Abby Rhodes Selena Kimball Clayton William Forster Jacob B. Allred Anthony J. Krupa Kristina Gardner Fahad Alshehri Limnogeology Chenwei Li Noel J. Grimes Jillian M. Ashton Ido Sirota Nathan Gregory Limbaugh Carson Paige Hedberg Elizabeth B. Batianis Lauren Elizabeth Lobue Charlotte Jeanne Heinz Hohman Sophia Becker Marine and Coastal Gustavo Adolfo Bejar Lopez Molly E. Hunt Ajit Kumar Behera Geosciences Jacques Lyakov Kara Kelley Eleana Joy Brumage Yahaira Dalis Alvarez Susan Ma Yael Leshno-Afriat Júlio Caineta Gwen Barnes Javier Fabian Matos Bryce Michelle McElvogue Dwight Zedric Capus Ryan Daniels Ricardo Enrique Milián Hannah R. Miller Haleigh E. Carlson Josephine Hall de la Cruz Kaedan O’Brien Hannah Carney Dhruv Jain Abigail Marie Miranda Amanda Katherine O’Grady Madhumita Chakraborty Andres Meza Ayuni Ina Mohamaad Benjamin David Olizar Cecily Combs Dorith Sofía Real Raihan Montasir Rachel Barbara Phelps Callum Corona Alexa Marie Regnier Breauna Murray Nathan Christopher Platt

30 GSA Today | January 2020 Zack Jake Quirk Emily Rose Gelbart PERCENTAGES OF TOP FIVE PROFESSIONAL Erin C. Roark Ian Peters INTERESTS OF NEW STUDENT MEMBERS Sonicah Sanon Sintra Reves-Sohn Garrett Lee Shepherd Anna R. Schwyter Stratigraphy/ Alexandria B. Shupinski Misa Yasumiishi Sedimentology, 12% Calvin So Markus Sudermann Stratigraphy/Sedimentology Structural Tristan B. Tompkins Omonde Sitou Akakpo Geology and Tanja Unger Raed Badr Mineralogy, 1. Mineralogy, Geo Tectonics, Petrology, and Vol Andrew James Bays Geochemistry, 14% Planetary/Space Science Yixin Dong Petrology, and 2. Environmental S Mary Elizabeth Carter Allie Jean Ellis Volcanology, 32% Dawson Eric Cronkhite Chin Chai Huan 3. Hydrogeology/H Sabrina A. Curtis Michael Naylor Hudgins Megan Fairchild Daniel Vincent Kelly Hydrogeology/ 4. Structural Geolo Tectonics Alistair T. Hayden Melanie Kling Hydrology, 5. Stra�graphy/Sed Peter E. Martin Levente Laisz 19% Environmental Sean Patrick McGuire Jerry Lei Science, 23% Lily R. Medley Sen Li Kelly Tran Ngo Kunyuan Ma Eddy Nunez Cole Alexander McCormick Shannon O’Neill Austin James McGlannan Amanda Marie Ostwald Ziyuan Meng Caje Antonius Kindred D’Maia Curry Santa Lucia Perez-Cortes Eduardo Luiz Menozzo da Rosa Tshering Zangmu Lama Audria Faith Dennen Srinidhi Ravi Carlie Maize Mentzer Sherpa Tineill Kapuaonaonaokalani Andrew Paul Robertson Hunter William Morris Logan Leinbach Dudoit Alessondra Springmann Konstantin Nikashin Carter Lewis Diane Yvette Escobedo Kaylin A. Tunnell Jessica Raff Bing Li Luis Alberto Espada Claire Villanueva Christopher Rupe Joshua S. Love Iremar Fernandez Haley Danielle Mosher Webb Jan Schönig Ming Ma Tatiana Isabel Fernandez-Perez Zachary W. Williams Anthony Paul Shillito Jared Kyle Meharg Alysa Fintel Walter K. Zimmerman Caitlin C. Sifuentes Prasanta Kumar Mishra Emily Fischer Jourdan Marie Speessen Alexander B. Neely Ashley Forrest Quaternary Geology/ Alexandra Elise Thompson David Alexander Poplin V Merhawi Gebremichael Geomorphology Leah L. Topping Mark Raftrey David Antonio Kelly Margret Brown Lijun Wang Colleen Grace Rankin Giovannetti-Nazario Samantha Cargill Lucy Webb David E. Soules Greta Margarita Ramirez Dan Duran Lelia Mae Weiland Ana Milena Suárez Arias Guerrero Haggai Eyal Liguo Zhai Yajie Tian Jessica Hall Kausik Ghosh Adam Edward Trzinski Taylor M. Hogue Amy Gilliland Structural Geology/Tectonics Ryan Timothy Walter Mingsun Hsiao Carl Steven Jung Shreya Agrawal Hanqing Zhao Ryssa Elaine Keeto Anisah Kabbara Harisma Andikagumi Ku’i Keliipuleole Sarina Mazzone Simone Bello Other Nicole K. LeRoux Anna Paulding Ryan M. Bessen Faisal Torbu Adams Benjamin R. Marosites Nick Rodgers Jessica Taylor Bivens Nicole Aikin Alice Martin Peter Tereszkiewicz Hallie Rebecca Bruce Akin Oyetayo Akinniranye Danika Mayback Gabriel West André F. Brunette Akilah Alwan Blayne McAnally Landon Williamson Adam J. Cawood Eliza Amber Lisette Elena Melendez Zequn Wu Eric Robert Dinter Alyssa Anderson Maya Mendez Oliver James Dixon Carlos A. Arambula Teodora Mitroi Seismology Dripta Dutta Jennifer Archer Jeremy Montes Tracy Butler Will Sparhawk Fisher Morelia Ayala Kacey Rianne Morgan Jazzy M. Graham-Davis Noah Aaron Fleischer Bailey Bergman Bridget M. Murray Cheryl A. Jones Micah Hernandez Danesha Byron Oluwatosin Isaac Obe Noah Frederick Hobbs Tiffani Canez James Anthony Padilla Soil Science Benjamin Lewis Howard Peter Holden Chao Ava Jane Palmo Hayley Christine Anderson Valeria Jaramillo Alexandra M. Cohen Madison Ann Pancake Jennifer Angela Bass William R. Kersey Cory Couture Rudra Mohan Pradhan

www.geosociety.org/gsatoday 31 Kainalu Steward Ariel Goerl AFFILIATES David W. Kay Brian Frank Swilley Phil Harrison Habeeb Akorede Ernest A. Klatt Jr. Nicolas Vanderzyl Olga S. Jarrett Thomas Bates Michael Lee Ashton Vonnahme Joanna R. Latham Gunnar Biggs Paul McBurnett Oscar A. Wilkerson V Jason Lees Dean Culwell Eric F. Paule Brittan Wogsland Joanmarie McCann Richard A. Doyle David Pineda-Huezo Jonnathan M. Zuna Kathleen Miller Charles Ellingburg Amber Richards Stephanie Moses Dennis A. Fenton Henry Rose III K–12 TEACHERS Candice C. Newman Harold Haupt III Jeff Scott Norov Baigalmaa Veronica Thompson Roy Hornaday Chetan Sharma Daniel K. Edwards Ryan E. Turner Bill Jacobs Fred Stockbauer Maria Finizio Roberto Zamora Sr. Nicki Janus Gerald Tremblay

Take the lead in applied geosciences

With Penn’s Master of Science in Applied Geosciences, you stay ahead of the curve in remediation practices.

Advance your career and learn from industry leaders about:

• Geologic field methods • HAZWOPER certification • Stormwater systems • New technologies and • Project management techniques

Join us for a virtual information session on February 11. WWW.UPENN.EDU/MSAG

32 GSA Today | January 2020 GSA Section 2020 Meetings

South-Central Joint Southeastern–Northeastern 9–10 March 20–22 March Fort Worth, Texas, USA Reston, Virginia, USA Chairs: Omar Harvey, omar.harvey@ Chairs: Arthur Merschat, [email protected]; tcu.edu; Arne Winguth, [email protected] Patrick Burkhart, [email protected] www.geosociety.org/sc-mtg www.geosociety.org/se-mtg

Fort Worth Stockyards. Photo by Visit Fort Worth. Great Falls Park. Photo by Visit Fairfax.

Rocky Mountain 4–5 May Provo, Utah, USA Chair: Daniel Horns, [email protected] www.geosociety.org/rm-mtg

Mount Timpanogos. Photo by Hike395 via Wikimedia Commons.

Cordilleran North-Central 12–14 May 18–19 May Pasadena, California, USA Duluth, Minnesota, USA Chair: Doug Yule, [email protected] Chair: Karen Gran, [email protected] www.geosociety.org/cd-mtg www.geosociety.org/nc-mtg

City Hall. Photo by Pasadena Convention & Visitors Bureau. Aerial Lift Bridge at sunrise. Photo by Visit Duluth. GeoCareers Programs at the 2020 Section Meetings

Career Workshops

Geoscience Career Workshop Part 1: Career Planning and and industry? Workshop presenters and professionals in the field Informational Interviewing will address these issues. Your job-hunting process should begin with career planning, not when you apply for jobs. This workshop will help you begin this Geoscience Career Workshop Part 3: Cover Letters, Résumés, process and will introduce you to informational interviewing. and CVs This section is highly recommended for freshmen, sophomores, How do you prepare a cover letter? Does your résumé need a good and juniors. The earlier you start your career planning the better. edit? Whether you are currently in the market for a job or not, learn how to prepare the best résumé possible. You will review numerous Geoscience Career Workshop Part 2: Geoscience Career examples to help you learn important résumé dos and don’ts. Exploration What do geologists in various sectors earn? What do they do? What are the pros and cons of working in academia, government,

Mentor Programs

Enjoy a free lunch while meeting with geoscience mentors Rocky Mountain Section: Provo, Utah, USA working in applied sectors. The popularity of these programs Shlemon Mentor Luncheon: Monday, 4 May means that space is limited, so plan to arrive early, because lunch Mann Mentors in Applied Hydrology Luncheon: Tuesday, 5 May is first-come, first-served. For further information, contact Jennifer Nocerino at [email protected]. Cordilleran Section: Pasadena, California, USA Shlemon Mentor Luncheon: Tuesday, 12 May South-Central Section: Fort Worth, Texas, USA Mann Mentors in Applied Hydrology Luncheon: Wednesday, Shlemon Mentor Luncheon: Monday, 9 March 13 May Mann Mentors in Applied Hydrology Luncheon: Tuesday, 10 March North-Central Section: Duluth, Minnesota, USA Shlemon Mentor Luncheon: Monday, 18 May Joint Meeting: Southeastern and Northeastern Sections: Mann Mentors in Applied Hydrology Luncheon: Tuesday, 19 May Reston, Virginia, USA Shlemon Mentor Luncheon: Friday, 20 March Mann Mentors in Applied Hydrology Luncheon: Saturday, 21 March

34 GSA Today | January 2020 Field Guide 56

The Gigantic Markagunt and Sevier Gravity Slides Resulting from Mid-Cenozoic Catastrophic Mega-Scale Failure of the Marysvale Volcanic Field, Utah, USA

By Robert F. Biek, Peter D. Rowley, and David B. Hacker

The Markagunt and Sevier gravity slides are gigantic landslides that resulted from gravitationally induced catastrophic failure of the southern ank of the Oligocene to Miocene Marysvale volcanic eld. Each is nearly 100 km long with runouts over the former land surface >35 km; together they span 7000 km2 and rank among Earth’s largest terrestrial landslides. Basal cataclastic layers, injectites, pseudotachylyte, deformed clasts, and a variety of kinematic indicators demonstrate catastrophic emplacement, which was preceded by slow gravitational spread- ing of the volcanic eld. This volume offers a history of their discovery, our current understanding of the gravity slides, and a guide to particularly instructive exposures for which the authors document their conclusions about the size, age, and signi cant structural features of these newly discovered features. FLD056, 121 p., ISBN 9780813700564 | list price $23.00 | member price

Field Guide 56 E R P R B I C E The Gigantic Markagunt and Sevier Gravity Slides M E Resulting from Mid-Cenozoic Catastrophic Mega-Scale • M

Failure of the Marysvale Volcanic Field, Utah, USA E

• • • By Robert F. Biek, Peter D. Rowley, and David B. Hacker M 1 C I

The Gigantic Markagunt and Sevier Gravity Slides Resulting from Mid-Cenozoic Catastrophic Mega-Scale Failure E R M P B E R

GSA BOOKS } https://rock.geosociety.org/store/ toll-free 1.800.472.1988 +1.303.357.1000, option 3 [email protected] GEOSCIENCE JOBS AND OPPORTUNITIES

Ads (or cancellations) must reach the GSA advertising office no later than the first of the month, one month prior to the issue in Foundation ADVANCE award to promote gender ture, deformation, and interaction with fluids during which they are to be published. (Note: Combined March/April issue equity in STEM faculty, led by SEES faculty (see their evolution. The appointee is expected to develop releases on March schedule.) Print ads will also appear on the http://www.bgsu.edu/allies). The Division of Diver- Geoscience Job Board to coincide with the month of print issue. a high-profile, externally funded research program Contact: [email protected], +1-800-472-1988 ext. sity and Belonging coordinates affinity groups for and teach courses in solid-Earth aspects of geology. 1053, or +1-303-357-1053. Email correspondence should include faculty and staff who identify as persons of color, This position has excellent opportunities for complete contact information (including phone and mailing Latinx, LGBTQ+, and as persons with disabilities. collaboration given existing strengths in igneous address). Rates are in U.S. dollars. The University is fully accredited by the Higher petrology/geochemistry, U-Th-Pb geochronology Per line each Per Line for addt’l month Learning Commission and is a member of the North (Arizona LaserChron Center), noble gas geochemis- Classification 1st month (same ad) Central Association. For more information, please try/geochronology (Arizona Noble Gas Laboratory), Positions Open $9.40 $9.35 visit: www.bgsu.edu. TIMS-based geochronology and petrogenesis, and Fellowship Opportunities $9.40 $9.35 For a complete job description and application fission-track geo/thermochronology. Opportunities for Students First 25 lines FREE $5.00 instructions, visit https://bgsu.hiretouch.com/ or Review of applications will begin January 6, 2020, Additional lines $5.00 $5.00 contact the Office of Human Resources at BGSU. and will continue until the position is filled. Details All applications are accepted and processed through about the position and application materials can be the HireTouch website. In compliance with the ADA found at: https://uacareers.com/postings/43205. POSITIONS OPEN Amendments Act (ADAAA), if you have a disabil- Equal Opportunity Employer Minorities/Women/ ity and would like to request an accommodation in Vets/Disabled. Faculty Position, Sedimentary order to apply for a position with Bowling Green Processes, Bowling Green State State University, please call +1-419-372-8421. Mini- mum qualifications for the position are: a Ph.D. in Visiting Assistant Professor University geosciences or a closely related field such as envi- of Geology, Dept. of Geology, The School of Earth, Environment, and Society ronmental science or geography (ABDs will be con- Washington and Lee University (SEES) at Bowling Green State University (BGSU) sidered as long as the requirements for the degree The Department of Geology at Washington and invites applications for a tenure-track Assistant Pro- are completed by August 2020); a demonstrated Lee University invites applications for a one-year fessor position in Sedimentary Processes beginning record of research in sedimentary processes (e.g., Visiting Assistant Professor of Geology, beginning August 2020. SEES includes programs in Geology, publications in peer-reviewed journals, conference July 1, 2020, and with potential for renewal. This Geography, and Environment and Sustainability presentations); and teaching experience at the colle- position carries a 6-course teaching load distrib- and offers multiple undergraduate degrees in these giate level (e.g. course instructor, teaching assistant, uted over Fall and Winter terms (12 weeks each), areas and two M.S. degrees in Geology and Applied guest lecturer). and the university’s signature 4-week Spring Term. Geospatial Science. For an application to be considered complete, The position is open to candidates with expertise We seek an individual who will develop a pro- in any area of geoscience, although preference may ductive, collaborative, externally funded research applicants must include the following materials in be given to those able to teach one or more of GIS, program at BGSU in the broad area of sedimentary their application: a letter of application, curriculum geomorphology, oceanography, planetary geology, processes. vitae, statements of research and teaching interests, or water resources. Courses taught by the visitor The candidate will be expected to teach introduc- statement of past and anticipated contributions to will include Physical Geology and other courses at tory undergraduate courses, a required course in Sed- advancing diversity and inclusion, the names and the introductory or advanced level as needed for our imentology and Stratigraphy for geology undergradu- contact information of three references who will be ates, and upper-level undergraduate and graduate invited to provide a current (dated within the past curriculum and dependent upon the successful can- level courses in their area(s) of expertise. The candi- year) letter of reference, and copies of or links to up didate’s expertise. Preferred candidates will hold a date will also have the opportunity to contribute to the to five publications. Ph.D. or have ABD status. summer Field Geology course. Mentoring of under- Applicants should describe how their research Washington and Lee University promotes a graduate and graduate student research is expected. will leverage existing assets and expertise includ- dynamic and inclusive environment that allows SEES has up to date research and teaching facili- ing a growing focus in watershed processes within students and employees of multiple backgrounds, ties in sedimentology and sedimentary geology. SEES, how they would collaborate with colleagues cultures, and perspectives to learn, work, and thrive For more information about SEES and the posi- in hydrology, geochemistry, paleobiology, geospa- together. Successful candidates will contribute to tion, visit http://www.bgsu.edu/arts-and-sciences/ tial science, environmental science or environmen- that environment and exhibit potential for excel- earth-environment-and-society.html or email the tal policy, and how their work supports BGSU’s lence in teaching and for vigorous scholarship. In Sedimentary Processes Search Committee Chair, mission of contributing to the public good. keeping with the University Strategic Plan, we wel- Dr. Peg Yacobucci, [email protected]. Application deadline: January 15, 2020. come applications from underrepresented minority BGSU is a high-research, residential university A background check and official transcripts candidates and members of other communities that located in northwest Ohio approximately 20 miles showing highest degree earned are required for are traditionally underrepresented in academia. south of Toledo, Ohio, 30 miles from Lake Erie, and employment. Washington and Lee University is a highly selec- 70 miles from Ann Arbor, Michigan, and the Detroit BGSU is an Affirmative Action/Equal Oppor- tive, independent, co-educational, liberal arts col- airport. BGSU offers more than 200 undergraduate tunity Educator and Employer. We are committed lege of approximately 1850 undergraduate and 400 majors and programs, 47 master’s degree programs, to fostering a diverse and inclusive environment law students and located in Lexington, VA, three and 17 doctoral degree programs. U.S. News and and strongly encourage applications from women, hours southwest of Washington, DC. W&L is con- World Report names BGSU as one of the top pub- minorities, veterans, and individuals with disabili- sistently ranked among the top 12 national liberal lic universities nationwide with a strong commit- ties regardless of age, gender identity, genetic infor- arts colleges. The Geology Department (https:// ment to first-year programs that lead to success. mation, religion, or sexual orientation. www.wlu.edu/geology-department) has excellent Approximately 20,000 students (including 2900 facilities and resources, makes great use of the graduate students) attend BGSU. BGSU’s enroll- Faculty Position in Tectonic Appalachians in field courses and labs, and is a ment includes 23% first-generation college stu- Petrochronology, University of Arizona member of the Keck Geology Consortium. dents. Over 17% of our students identify as persons The Department of Geosciences at the University Review of applications will begin on January 30. of color, and nearly 5% are international students. of Arizona seeks to hire a tenure-track assistant pro- Candidates should submit: a letter of application Of BGSU’s 1200 faculty members, 13% identify as fessor in petrochronology—an emerging field that demonstrating the ability to work with a diverse persons of color and 4% hail from different coun- explores the power of minerals to serve as time cap- student population, a CV, a statement of teaching tries. BGSU is the recipient of a National Science sules that yield information about pressure, tempera- interests and philosophy, a research statement, and

36 GSA Today | January 2020 contact information for three references. All materi- undergraduate and graduate courses in the faculty geomechanical software upon which the candidate als should be submitted via Interfolio at http://apply member’s specialty. Review of applications will will ideally capitalize. .interfolio.com/71264. For more information, you begin January 1, 2020, and continue until the posi- Candidates with expertise in soil and rock may contact Jeffrey Rahl at [email protected]. tion is filled. CSUB fosters and appreciates ethnic mechanics, and who currently lead field- and com- and cultural diversity among its faculty and students, putationally-based research examining geohazards Assistant Professor of Sedimentology, and is committed to increasing the diversity of its related to the resource sector and natural hazards Colorado Mesa University faculty to reflect the diversity of the campus com- are encouraged to apply. The successful candidate The Geosciences Program in the Department of munity. Applications from women, ethnic minori- will develop an internationally recognized, exter- Physical and Environmental Sciences at Colorado ties, veterans, and individuals with disabilities are nally funded research program, and supervise both Mesa University (CMU) invites applications for a welcome. The full announcement and instructions Masters- and Doctoral-level graduate students. full-time, tenure-track Assistant Professor position on how to apply can be found at: http://www.csub Teaching responsibilities will include undergradu- to begin August 2020. The successful candidate will .edu/Geology/; email: [email protected]. ate and graduate level courses that support the have a Ph.D. in Geological Sciences (by August 31, environmental geoscience curriculum, specifically 2020) and a strong background in field-based silici- Metal Earth PDF/Research Associate Introduction to Soil and Rock Engineering and clastic sedimentary geology. Experience or at least a Positions, Laurentian University Resource Geotechnics. strong interest in energy resources is desirable. The The Mineral Exploration Research Centre at Lau- The candidate is expected to become a registered geology faculty at CMU have a unified core peda- rentian University, Canada, seeks applicants for two Professional Engineer or Geoscientist in British gogy involving year-round field-based education, postdoctoral positions with Metal Earth, a CAD Columbia. and due to Grand Junction’s spectacular proximal $104 million project which seeks to identify and For additional information about this position, see geological exposures, field-based course activities understand the processes responsible for Earth’s http://www.sfu.ca/earth-sciences/frbc-chair.html. will be highly encouraged & supported. The Assis- differential metal endowment during the Precam- All qualified candidates are encouraged to apply; tant Professor will be expected to develop & incor- brian. The first position addresses the differential however, Canadian citizens and permanent residents porate undergraduate research opportunities as part VMS endowment of Archean greenstone belts. It will be given priority. SFU is an equity employer and of CMU’s campus-wide teacher-scholar model. Suc- will undertake a comprehensive review and compi- encourages applications from all qualified individu- cess in the position will include four components: (i) als including women, persons with disabilities, visible teaching 12 credit hours per semester; (ii) offering lation of geological, geochemical, geophysical and geochronological data at the assemblage scale in the minorities, Indigenous Peoples, people of all sexual research opportunities to undergraduate students; orientations and gender identities, and others who (iii) advising; and (iv) participation in service to Abitibi Greenstone Belt, followed by post- and pre- deformation reconstruction of volcanic assemblages may contribute to the further diversification of the the program, university, and broader geological university. Under the authority of the University Act community. Upper-division undergraduate course and analysis of its deposits, to identify a common set personal information that is required by the Univer- teaching responsibilities will include Sedimentol- of geological predictors of mineral endowment. As sity for academic appointment competitions will be ogy and a course in the candidate’s area of expertise. part of an integrated geological-geophysical team, collected. For further details see: http://www.sfu.ca/ Participation in our summer Field Camp course is the second position will involve detailed geological vpacademic/Faculty_Openings/Collection_Notice. desirable. Introductory course teaching responsi- mapping along a transect that cut across precious html. The University acknowledges the potential bilities may come through our existing courses in metal endowed and less endowed ancestral faults impact of career interruptions on a candidate’s record Physical Geology, Field-based Physical Geology, in greenstone belts of the western Superior craton. of research productivity, and encourages candidates to Historical Geology, and Geology of Colorado. Dem- Research will establish the stratigraphic and struc- explain such interruptions. onstrated teaching and research experience with tural architecture of the belts, and the timing and Applicants are requested to submit a curriculum undergraduate students is desirable. relationship between precious metal systems and vitae, a statement of research and teaching inter- The Geosciences Program at Colorado Mesa the evolution of the greenstone belts. The positions ests, and the names, titles, affiliations and contact University consists of ~70 undergraduate majors, 6 are funded for 2 to 4 years beginning in February- information (including phone numbers and email tenure-track faculty, and 1 full-time instructor. More May, 2020. Reviews of application will start in addresses) of three referees. Electronic applications information about the Geosciences Program and fac- January. For more information on the positions and are mandatory. Review of applications will begin ulty can be found at http://www.coloradomesa.edu/ application process, see https://merc.laurentian.ca/ January 20, 2020. Applications should be directed to: geosciences/index.html careers. Laurentian University especially welcomes Dr. Brent Ward, Chair, Department of Earth Direct inquiries to Andres Aslan at +1-970-248- and encourages applications from members of vis- Sciences, Simon Fraser University, Burnaby, BC. 1614 or at [email protected]. ible minorities, women, Aboriginal persons, mem- Email: [email protected]. To apply, go to https://coloradomesa.csod.com/ bers of sexual minorities and persons with disabili- ats/careersite/search.aspx?site=2&c=coloradomesa. ties. Applicants may self-identify as a member of an Review of applications will begin January 21, employment equity group. One-Year Visiting Assistant Professor, 2020, and will continue until the position is filled. Paleoclimate/Global Change, Colby AA/EOE, committed to a culturally diverse fac- Associate Professorship in Resource College, Waterville, Maine ulty, staff and student body. Geoscience and Geotechnics, Simon The Colby College Department of Geology invites Fraser University applications for a one-year Visiting Assistant Pro- Assistant Professor of Geology, The Department of Earth Sciences at Simon Fra- fessor specializing in paleoclimate, paleoceanogra- California State University, ser University invites applications for an Endowed phy, global environmental change, or a related field Bakersfield Chair in Resource Geoscience and Geotechnics at to begin September 1, 2020. The successful candi- The Department of Geological Sciences at Califor- the Associate Professor level, commencing as early date will teach a sophomore-level undergraduate nia State University, Bakersfield (CSUB) invites as January 2021. A Ph.D. is required as is previous course on Earth’s climate and paleoclimate history applications for two tenure-track Assistant Professor professional (e.g. academic or industry) experience. with a lab, as well as an introductory geology course positions to start in Fall 2020. We seek two broadly The Endowed Chair will provide academic lead- and an upper-level elective in their area of specialty trained geologists with applied research and teaching ership in support of British Columbia’s resource (a total of four course equivalents). Our ideal candi- interests including (but not limited to) basin analysis, industry, through training and research in geo- date will be able to offer both field- and lab-based aqueous geochemistry, groundwater, hydrology, and logical engineering and engineering geology and study of past environmental change in Maine to give geophysics. Teaching responsibilities will include geotechnics. The Department has state-of-the-art students hands-on experience with paleoclimate introductory-level courses along with upper-level remote sensing and 3D visualization facilities, and research. The successful candidate will have access

www.geosociety.org/jobs 37 GEOSCIENCE JOBS AND OPPORTUNITIES to instrumentation and facilities in the Departments receive Research or Teaching Assistantships and a Metal Earth is a CAD $104 million project that seeks of Geology and Chemistry for research and teach- Lindahl Scholarship totaling at least $22,000 for a to identify and understand the processes responsible ing. These include a powder-XRD, micro-XRF, nine-month appointment, and the cost of non-resi- for Earth’s differential metal endowment during the SEM-EDS, CHNSO Elemental Analyzer, ICP-OES, dent tuition is covered. Funding is renewable for 4 Precambrian. This research initiative aims to trans- petrographic and binocular microscopes, and sed- years if expectations are met. Other fellowships are form our understanding of Earth’s early evolution iment-sieving equipment. The search committee is available from the Graduate School. Further details and how we explore for metals. Specific projects especially interested in candidates with a demon- are at http://www.geo.ua.edu/. Applicants should include: (1) Sedimentology, detrital zircon geochro- strated ability to teach and mentor a diverse student contact Dr. Geoff Tick ([email protected]) to express nology, and geochemistry of the Archean Ament Bay population. A Ph.D. at the time of appointment is interest. Review of applications for Fall 2020 admis- assemblage, Sturgeon Lake greenstone belt, western preferred, but ABD candidates will be considered. sion will begin January 15, 2020. Ontario (MSc); (2) Structural geology and stratig- Complete applications will include: (1) a brief cover raphy of the Archean Steep Rock Group, Atikokan, letter, (2) a curriculum vitae, (3) a statement of teach- Ball State University. The Department of Environ- western Ontario (MSc); (3) Gold metallogeny of the ing philosophy illustrating commitment to diversity ment, Geology & Natural Resources at Ball State Archean Steep Rock and Finlayson greenstone belts, and inclusive teaching, and (4) three confidential let- University in Muncie, Indiana, invites applications Atikokan, western Ontario (MSc); (4) Greenstone ters of recommendation. Please submit all materials for full-time Ph.D., master of science and/or master of belt Assemblage Boundaries (Ph.D.); and (5) Metal- via Interfolio at: apply.interfolio.com/69710. Applica- arts students starting in August 2020. We seek highly logeny of the Archean VMS Sturgeon Lake green- tions received by January 6, 2020, will receive full motivated students with excellent written and analyti- stone belt, western Ontario (Ph.D.). Mapping experi- consideration, but applications will be reviewed until cal skills. Graduate assistant positions are available on ence, particularly in volcanology, structural geology, the position is filled. Inquiries may also be directed to a competitive basis. Faculty research covers the spec- and sedimentology is an asset. The projects are fully [email protected]. trum of environmental and geological sciences, and funded for two years (MSc) and four years (Ph.D.) Colby is a private, coeducational liberal arts col- natural resource management. Please contact Dr. K. through a stipend of CAD $30K/yr (includes a Lau- lege that admits students and makes employment Nicholson, [email protected], for details. Additional rentian Graduate Assistantship). All field and ana- decisions on the basis of the individual’s qualifica- information can be found at https://www.bsu.edu/ lytical costs are covered. For more information on tions to contribute to Colby’s educational objectives academics/collegesanddepartments/environment- the projects and application process, see https://merc and institutional needs. Colby College does not dis- geology-natural-resources. .laurentian.ca/careers. Laurentian University espe- criminate on the basis of race, color, gender, sexual cially welcomes and encourages applications from orientation, gender identity or expression, disability, Doctoral Student Opportunities, Duke Univer- members of visible minorities, women, Aboriginal religion, ancestry or national origin, age, marital sity. The Division of Earth and Ocean Sciences at persons, members of sexual minorities and persons status, genetic information, or veteran’s status in Duke University invites intellectually engaged and with disabilities. Applicants may self-identify as a employment or in our educational programs. Colby motivated students to apply to our doctoral program. member of an employment equity group. is an Equal Opportunity employer, committed to We particularly seek applicants in the fields of bio- excellence through diversity, and encourages appli- geochemical oceanography, geochemical hydrol- cations from qualified persons of color, women, ogy, coastal processes and geomorphology, atmo- persons with disabilities, military veterans, and spheric dynamics, climate change, and energy and members of other under-represented groups. Colby resources. As part of Duke’s Nicholas School of the complies with Title IX, which prohibits discrimina- Environment, our graduate students interact with tion on the basis of sex in an institution’s education faculty and students in diverse fields related to the programs and activities. Questions regarding Title earth, oceans, atmosphere, biosphere and environ- Hiring? IX may be referred to Colby’s Title IX coordinator ment. We offer 5 years of financial support through or to the federal Office of Civil Rights. For more research and teaching assistantships and fellow- Find those qualified to fill vacancies. information about the College, please visit our web- ships. For more information, please visit https:// Use print issues of GSA Today nicholas.duke.edu/academics/doctoral-programs/ site: www.colby.edu. and GSA’s Geoscience Job Board earth-ocean-sciences-eos or email our Director of Graduate Studies at [email protected]. (www.geosociety.org/jobs). Bundle OPPORTUNITIES FOR STUDENTS and save for best pricing options. Lindahl Ph.D. Scholarships. The University of MSc and Ph.D. Student Opportunities, Mineral Alabama Department of Geological Sciences seeks Exploration Research Centre, Laurentian Uni- That unique candidate is Ph.D. students with specializations that complement versity. Funded MSc and Ph.D. projects are avail- waiting to be found. faculty research interests. Exceptional students will able through Metal Earth at Laurentian University.

38 GSA Today | January 2020 Recent Digital Technology Trends in Geoscience Teaching and Practice

Kellen L. Gunderson, R. Chadwick Holmes, Chevron Energy Technology Company, 1500 Louisiana Street, Houston, Texas, 77044, USA; Julie Loisel, Department of Geography, Texas A&M University, Eller O&M Building, Room 810, College Station, Texas 77843, USA

ABSTRACT of study (Frey and Osborne, 2017), including quantities of available subsurface data. Digital technology advances are rapidly geoscience. Here, we synthesize recent trends Petroleum geoscientists showed early inter- altering the landscape of geoscience teaching in digital technology applications to geosci- est in AI, leveraging their pattern recogni- and practice. Although geoscience has readily ence teaching and practice and discuss some tion capabilities to help detect hydrocarbon- embraced new digital technologies in the past, challenges associated with the dynamically associated anomalies in seismic data the simultaneous emergence of innovations changing technological environment. (Widrow et al., 1994) and define facies based like open online courses and machine learn- on log patterns (Neri, 1997). Broader adop- ing toolkits has greatly steepened the learning DIGITAL TRENDS IN GEOSCIENCE tion of AI technologies has only recently curve for geoscientists of all experience lev- TEACHING accelerated, in part due to university partner- els. Here, we discuss how these technologies The digital technology trends in geosci- ships to tackle key technical challenges, are affecting the jobs of geoscience teachers ence education can be grouped into two business alignments with tech companies, and practitioners by highlighting a few tech- themes: (1) new information delivery meth- and competitive crowd-sourcing to supple- nology-related trends in these areas. We also ods in the classroom, in the field, and online; ment in-house research and development. note the potential challenges of this new tech- and (2) updated curriculum content that Most of the ML applications in petroleum nological environment. A holistic view of caters to state-of-the-art research and prac- geoscience have focused on seismic inter- digital technology trends can help geoscien- tice. Virtual field trips and augmented real- pretation. Seismic interpretation software tists position themselves for success in a ity tools are increasing student exposure to packages have historically provided semi- future where technological advancements field locations with reduced costs (De Paor, automated tools like signal auto-trackers or will presumably continue to occur at an even 2016). MOOCs are providing students with interpolation and gridding routines. Newer more rapid pace. cost-effective, flexible education options to approaches are utilizing ML to interpret choose from, thereby competing with the faults (Zheng et al., 2014), define salt bound- INTRODUCTION classical higher-education campus life model aries (Di et al., 2018), or delineate geobodies Digital advances have been transforming (Deming et al., 2018). based on labeling routines (Alaudah and Al society for several decades, as exemplified The demand for more “digitally fluent” Regib, 2016). With the growing popularity by the advent and proliferation of prominent graduates has accelerated changes in geosci- of neural network solutions and access to technologies like personal computers, the ence curricula. Some schools now offer spe- high-performance computing resources, Internet, and smart phones. In just the past cialized computer programming courses and advances in image segmentation and classi- few years, there has also been a rapid expan- workshops, which often include robust sta- fication routines are now setting the stage sion in cloud computing, high-performance tistical reviews. New majors, minors, and for interpretation as a full-volume machine- computing, the Internet of things, massive certificates, such as geographic information assisted analysis. open online courses (MOOCs), and machine system (GIS) or data science, are emerging learning (ML) (Fig. 1). These simultaneous as alternatives to a traditional geoscience CHALLENGES AND CAUTIONS changes have the potential to act as a force degree. Employers need graduates who can The incorporation of computational geo- multiplier, creating even more rapid societal adapt to a quickly changing technological science skills into academic curricula change than previous relatively isolated landscape. Geoscience educators must focus remains a major challenge. Additional advances. Recent progress in artificial intel- on providing well-rounded and up-to-date resources are needed to train existing fac- ligence (AI), when coupled with advance- course content, with expanded opportunities ulty in the newest technology and/or hire ments in high-performance computing and to strengthen the technical competencies of new faculty whose research uses emerging the proliferation of cloud storage, have their students. technologies. Advocating for the inclusion brought powerful tools that were once acces- of rigorous computational geoscience sible to only a few researchers with super- DIGITAL TRENDS IN GEOSCIENCE courses that include programming ele- computers within the grasp of everyday PRACTICE ments, beginning in the undergraduate software developers. This acceleration in Many practical geoscience disciplines, curriculum, seems imperative. society’s digital transformation has the like petroleum exploration, are trying to cap- While online education has many advan- potential to change every industry and field italize on improvements in AI and the vast tages, one drawback is the potentiral loss of

www.geosociety.org/gsatoday 39 100 A 1E +7 ( ) Computing Power Trend 95 Human Performance 90 1E +6 85 Accuracy 1E +5 80

% ( ) Machine Learning Image ransistor s T 75 Recognition Capability Trend 1E +4 70 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 Year Year

60 100 Human Performance 50 () Internet Users Trend 95 40 90 30 85 Accuracy 20 80 % ( ) Machine Learning Natural 10 75 Language Understanding Trend 0 70 % Global Population 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 Year Year

20 100 Human Performance () Internet Connected Devices Trend 95 15 90 10 85 Accuracy 80 (G) Machine Learning 5 % 75 Speech Recognition Trend Devices (Billions ) 0 70 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 Year Year ) 12 0.5 s 10 ( ) Massive Open Online Courses Trend 0.4 8 0.3 6 0.2 (Thousands 4 () Machine Learning 2 0.1 % of Reference Geoscience Literature Trends 0 0

MOOC ’s 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 Year Year Figure 1. (A) Number of transistors in an integrated circuit (Rupp, 2018). (B) Worldwide Internet users (World Bank, 2018). (C) Number of global Internet- connected devices (Mercer, 2017). (D) Number of massive open online courses (MOOC’s) offered (Shah, 2018). (E) Machine learning image recognition capability (Russakovsky et al., 2015). (F) Machine learning natural language from text understanding (Zilly et al., 2016). (G) Machine learning speech recognition (Saon et al., 2017). (H) Percentage of geoscience publications with machine learning in the abstract, title, or keyword.

future students who become exposed to the data or black box algorithms used in an anal- passion for their work. Technological dexter- geosciences through on-campus classes. ysis may be of questionable quality. Until ity will certainly bring additional value to General education geoscience courses, taught skilled geoscientists can “crack” the codes our field, but we believe it will be the combi- by passionate faculty and often supplemented and truly understand algorithm mechanics nation of deep fundamental geoscience with field trips, are an important tool to recruit and limitations, this problem will remain. In knowledge and digital fluency that will be new geoscience students. We think it is response, a growing number of journals are the foundation for the next era of geoscience important that universities not lose their reinforcing new best practices, such as pub- innovation and discovery. emphasis on field and lab work or their com- lishing codes and raw data. We assert that it mitment to undergraduate research. These is the role of the geoscience community to ACKNOWLEDGMENTS unique, high-impact learning experiences can establish standard techniques and other best We thank numerous colleagues for helpful discus- only happen in person and are essential to practices to solidify the correct use of popu- sions that informed the ideas in this paper. This manuscript was improved due to the helpful reviews by the mentoring students in our discipline. lar new technologies. GSA Today editor and an anonymous reviewer. Another point of caution is the potential erosion of key geoscience skills from an CONCLUSIONS REFERENCES CITED over-reliance on digital technology. This has The geoscientists that are most likely to Alaudah, Y., and Al Regib, G., 2016, Weakly-super- been recognized as a potential risk in petro- thrive in this new technological environment vised labeling of seismic volumes using reference exemplars: Image Processing (ICIP), Sept. 2016 leum geology for more than a decade are those willing to be agile and remain in a IEEE International Conference, p. 4373–4377. (Yeilding, 2005), as subsurface interpreters state of continuous learning. Maintaining Deming, D.J., Lovenheim, M., and Patterson, R., began to rely heavily on workstation-pro- static methods of teaching and practice will 2018, The competitive effects of online education, duced maps that often provide geologically be insufficient. Paradoxically, despite the in Hoxby, C.M., and Stange, K., eds., Productivity unrealistic solutions. If virtual field trips and need for digital comprehension and capabil- in Higher Education: Chicago, University of Chi- cago Press, 392 p. digital map-making become students’ pri- ity, the most important functional knowledge De Paor, D.G., 2016, Virtual rocks: GSA Today, mary exposure to geologic mapping, the and skills that any geoscientist should pos- v. 26, no. 8, p. 4–11, https://doi.org/10.1130/ problem may grow even worse. sess will likely remain the same. These GSATG257A.1. ML applications in geoscience present include a deep understanding of fundamen- Di, H., Shafiq, M., and Al Regib, G., 2018, Multi-at- some unique challenges. Insufficient train- tal Earth processes, an ability to creatively tribute k-means clustering for salt-boundary de- lineation from three-dimensional seismic data: ing data and poor experimental designs can integrate data from various sources, the clar- Geophysical Journal International, v. 215, no. 3, lead to erroneous conclusions. Open-source ity to communicate difficult concepts, and a p. 1999–2007, https://doi.org/10.1093/gji/ggy376.

40 GSA Today | January 2020 Frey, C.B., and Osborne, M.A., 2017, The future of tion Challenge: International Journal of Com- World Bank, 2018, Individuals using the Internet employment: How susceptible are jobs to comput- puter Vision, v. 5, no. 211, https://doi.org/10.1007/ (% of population): https://data.worldbank.org/ erisation?: Technological Forecasting and Social s11263-015-0816-y. indicator/IT.NET.USER.ZS (accessed Oct. 2018). Change, v. 114, p. 254–280, https://doi.org/10.1016/ Saon, G., Kurata, G., Sercu, T., Audhkhasi, K., Thom- Yeilding, C., 2005, Is the workstation “killing” geol- j.techfore.2016.08.019. as, S., Dimitriadis, D., Cui, X., Ramabhadran, B., ogy?: Houston Geological Society Bulletin, v. 47, Mercer, D., 2017, Smart Home Connected World: Picheny, M., Lim., L., Roomi, B., and Hall, P., 2017, Smart Home Is Key to Tomorrow’s Internet of no. 9, p. 27–29. English conversational telephone speech recogni- Zheng, Z.H., Kavousi, P., and Di, H.B., 2014, Multi- Things: Strategy Analytics, https://www.strategy tion by humans and machines: arXiv preprint arX- analytics.com/access-services/devices/connected attributes and neural network-based fault detec- iv:1703.02136. https://arxiv.org/pdf/1703.02136.pdf -home/smart-home/reports (accessed Oct. 2018). tion in 3D seismic interpretation: Advanced Ma- (accessed Oct. 2018). Neri, P., 1997, Revolutionary software for seismic terials Research, v. 838, p. 1497–1502. Shah, D., 2018, By the numbers: MOOC’s in 2017: analysis: World Oil, v. 218, no. 5, https://www.osti Zilly, J.G., Srivastava, R.K., Koutník, J., and Schmid- Class Central MOOC Report, https://www .gov/biblio/483881. huber, J., 2016, Recurrent highway networks: arXiv Rupp, K., 2018, 42 Years of Microprocessing Trend .class-central.com/report/mooc-stats-2017 preprint arXiv:1607.03474, https://arxiv.org/pdf/ Data: https://www.karlrupp.net/2018/02/42-years (accessed Oct. 2018) 1607.03474.pdf (accessed Oct. 2018). -of-microprocessor-trend-data (accessed Oct. 2018). Widrow, B., Rumelhart, D.E., and Lehr, M.A., 1994, Russakovsky, O., Deng, J., Su, H., Krause, J., Sath- Neural networks: Applications in industry, busi- eesh, S., Ma, S., Huang, Z., Karpathy, A., Khos- ness and science: Communications of the ACM, Manuscript received 2 Mar. 2019 la, A., Bernstein, M., Berg, A.C., and Fei-Feil, v. 37, no. 3, p. 93–105, https://doi.org/10.1145/ Revised manuscript received 4 Sept. 2019 L., 2015, ImageNet Large Scale Visual Recogni- 175247.175257. Manuscript accepted 17 Sept. 2019

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www.geosociety.org/gsatoday 41 Academic Program Prioritization: An Existential Threat to Geoscience Departments

Carl Drummond, Dept. of Physics, Purdue University Fort Wayne, Fort Wayne, Indiana 46805, USA, [email protected]

INSTITUTIONAL AND division courses for majors and accounted prioritization process. The first was the DEPARTMENTAL BACKGROUND for between 3% and 5% of the departmen- absence of an accurate cost accounting On 31 December 2016, the Department of tal total credit hours. while some 60% of protocol. Departmental data that should Geosciences at Indiana University–Purdue instructional capacity was dedicated to gen- have informed academic performance University Fort Wayne (IPFW) was closed, eral education courses heavily enrolled by metrics were both poorly defined and and admission to the bachelors of science in non-majors (Drummond and Markin, 2008). incompletely recorded. Additionally, reve- geology degree program was suspended. The Department of Geosciences served an nue generated by online courses was iso- I was serving as Vice Chancellor for average of 31 majors and graduated four stu- lated from and independent of the general Academic Affairs at the time, so it was my dents per year (Table 1). fund. Faced with an inability to access job to make the necessary changes. Having accurate department financial data, the been a member of the department for more THE CHALLENGES OF task force could not proceed with estab- than 20 years, managing the processes that PRIORITIZATION lishing financially based metrics. lead to that decision was extremely diffi- In March 2014, a small team of IPFW In response to these challenges, a survey cult. The following review of the events that administrators attended a conference spon- was developed that required departments to led to department closure is intended to pro- sored by the higher education consulting report on their mission, accomplishments, vide a framework for understanding the organization Academic Impressions where accreditations, inefficiencies, academic and context and process of program prioritiza- the ideas of Robert Dickeson, former presi- budget data, and departmental goals. The tion. By implementing the proactive coun- dent of Colorado State University, were pre- task force members then provided written termeasures described, other at-risk geosci- sented. Dickeson is an advocate for institu- responses to these reports. ence programs may hope to survive future tional efficiency, and the conference was economic oscillations and the increasingly intended to provide the training and tools PROGRAM CLOSURE common application of private sector mod- necessary to launch a process of program On 6 May 2016, the task force issued a sec- els of organizational efficiency within prioritization and elimination (Dickeson, ond report. Although a total of 41 recommen- the academy. 2010). This approach involves the identifi- dations touching all aspects of university Because of its significant service func- cation of a suite of performance metrics, the operations were presented, the core of the tion, the Department of Geosciences at ranking of the institution’s programs into report consisted of three recommendations IPFW experienced fluxuations in credit- quintiles, and investment or divestment in that fell within the broad heading of “Evaluate hour production that were closely linked to programs according to their ranking. The Academic Program Efficiencies.” Recom- the broader enrollment patterns of the uni- participants in the training process super- mendation 2.1 called for the creation of a set of versity. Maximum enrollment occurred in vised a task force of faculty and staff who academic performance metrics, while recom- fall of 2011 (Table 1). Subsequently, there were asked to develop assessment methods, mendations 2.2 and 2.3 called for the review was a failure to recognize the possibility of, analyze data, and craft recommendations of academic programs and administrative or adequately plan for, a post-recessionary both at the unit and the university level that organization at the departmental level. decline in total campus enrollment. De- would guide resource prioritization. In late August 2016 a response to recom- clining tuition revenue resulted in signifi- The IPFW task force recognized a series mendation 2.1 was issued by the adminis- cant budget shortfalls from 2012 through of systemic challenges concerning the tration that defined the concepts of 2017. In response, a campus-wide hiring freeze, voluntary early retirement programs, and non-voluntary reduction-in-force pro- TABLE 1. SUMMARY OF PERSONNEL, CREDIT HOURS DELIVERED, AND STUDENT HEADCOUNTS FOR grams were all implemented. However, even THE DEPT. OF GEOSCIENCES DURING ACADEMIC YEARS 2010–2011 THROUGH 2014–2015 these divestment plans could not keep pace Academic Faculty Credit Hours Head Count Year Tenured/ Continuing 100–200 300–400 % Majors Graduates with declining revenue. Tenure Track Lecturer The department had historically been a 14–15 5 1 3938 236 5.7 29 4 small undergraduate program with faculty 13–14 5 1 4781 150 3.0 32 3 12–13 5 1 5394 215 3.8 29 7 teaching a 3/3 load. Some 40% of instruc- 11–12 5 1 5868 168 2.8 36 4 tional capacity was dedicated to upper 10–11 5 1 5680 183 3.1 33 3

42 GSA Today | January 2020 programmatic and departmental viability. also implemented. The faculty of the 2014). Likewise, establishing meaningful Utilizing accurate academic performance department found new academic homes in relationships with regional business and data, three metrics were established. the departments of biology, chemistry, and industry had been a departmental goal. Program demand—number of students physics. These changes were projected to However, a pipeline for the employment of new to a program; student participation— create an immediate cost savings of graduates was never achieved. With no number of declared majors; productivity— US$200,000, followed by about US$1.1M in clear post-graduation pathway, with no col- number of graduates. In addition, three annually recurring savings. laboration between employers and the metric ratios were calculated: graduation department in recruiting prospective stu- efficiency—number of students who gradu- LESSONS LEARNED dents, and without a strong alumni base, ate divided by the number of majors; stu- While recognizing that no two sets of there was no viable mechanism to increase dent attrition—number of students who institutional circumstances are identical, student participation in the department. stop out divided by the number of majors; and accepting that many different factors The Department of Geosciences at growth trend—number of students entering can lead to a department’s elevated risk of IPFW is not the first geosciences program the program divided by the number of stu- closure, the experiences and lessons learned to be closed and almost certainly will not dents graduating, changing to a new major, from the IPFW events are valuable exam- be the last. The department fell victim to or stopping out. Values of each metric were ples for other departments. The Department an academic program prioritization pro- calculated for the five year period 2011– of Geosciences had been viewed by the 2012 through 2015–2016, and on 19 Sep- administration as a small, but successful, cess in large part because it failed to con- tember 2016 a document was issued that academic program. A concern regarding sider and implement existing strategies, reviewed all academic programs and the number of majors was frequently con- many of which are available through departments and included recommenda- sidered during departmental reviews but the Carleton College Science Education tions and expectations. was overlooked because of the efficient Resource Center’s Building Strong Depart- From the quantitative analysis, it was delivery of total credit hours. As such, the ments resources (https://serc.carleton.edu/ clear the Department of Geology’s perfor- department felt, and largely was, protected departments/index.html). The IPFW expe- mance metrics were dismal. However, the from critical review. However, the depart- rience has shown that the most critical department had extensively documented ment failed to recognize how an institu- characteristics of a department that is the scholarly and engagement activities of tional shift from valuing credit hour pro- resistant under the pressures of program both students and faculty. An initial recom- duction to student completion could create a closure are progressive and engaged de- mendation to maintain the B.S. in geology threat. Adjustment of department priorities partment leadership coupled with a collec- program was based on the recognition that in recognition of the significance of these tive willingness to accept and positively those contributions would wane if the institutional changes and an understanding respond to opportunities for change. By department was closed. Three departmental of how performance metrics were calcu- reviewing the combination of structural goals were established: restructure the geo- lated would have been a necessary but not weaknesses and missteps described above, sciences program through faculty replace- sufficient step in staving off closure. at-risk departments can take actions that ment, build connections to high school stu- Due to the demographics of the depart- will reduce their vulnerability. dents, and build connections to local ment’s faculty, a series of three retirements industries to increase student employment were planned between 2014 and 2018. The REFERENCES CITED placement. In addition to those recommen- opportunity existed, at the time of the first Anderson, S.W., Flood, T.P., and Munk, L., 2006, dations, continuous monitoring of depart- retirement, to realign the composition of Bucking the trend: Three new geoscience pro- mental metrics, development of curricular the faculty in a way that would support a grams: Journal of Geoscience Education, v. 54, pathways to attract students to the major, transition to an applied geotechnical cur- no. 1, p. 41–49, https://doi.org/10.5408/1089-9995 and collaboration with the civil engineering riculum. Although there was no guarantee -54.1.41. Dickeson, R.C., 2010, Prioritizing Academic Pro- program were expected. that the department’s fate would have been grams and Services: Jossey-Bass, San Francisco, During a meeting on 13 October 2016, the different, a curricular shift would have, at https://doi.org/10.1002/9781118269541. trustees of Purdue University made clear least in principle, provided a path to sus- Drummond, C.N., and Markin, J.M., 2008, An that the prioritization process was to be taining the department. Typically, if analysis of the bachelor of science in geology de- completed more rapidly than the timetable opportunities for changes in personnel are gree as offered in the United States: Journal of described in the September plan. This well-aligned with strategic curricular evo- Geoscience Education, v. 56, no. 2, p. 113–119, acceleration had its origin in the impending lution (Ulanski, 1995), a department is https://doi.org/10.5408/1089-9995-56.2.113. Renshaw, C.E., 2014, Design and assessment of a realignment of academic programs between demonstrating the capacity to meet the skills-based geoscience curriculum: Journal of Indiana University and Purdue University. needs of future students. Geoscience Education, v. 62, no. 4, p. 668–678, A revised response to recommendations 2.2 The Department of Geosciences had a https://doi.org/10.5408/13-100.1. and 2.3 was issued on 18 October 2016. short time in which to establish a client rela- Ulanski, S.L., 1995, Curriculum reform in under- Along with the B.S. in geology, admissions tionship with civil engineering. Only by graduate geology programs: Journal of Geologi- to degree programs in French, German, and building curricular linkages, and by popu- cal Education, v. 43, no. 1, p. 43–46, https://doi .org/10.5408/0022-1368-43.1.43. philosophy were also suspended. The lating upper-division courses with students departments of geology and philosophy from outside the geology major, can at-risk Manuscript received 10 July 2019 were closed and four departmental mergers programs build safeguards against future Revised manuscript received 23 Aug. 2019 impacting eight additional programs were closure (Anderson et al., 2006; Renshaw, Manuscript accepted 17 Sept. 2019

www.geosociety.org/gsatoday 43 CALL FOR APPLICATIONS 2020–2021 GSA-USGS Congressional Science Fellowship

Application deadline: 15 Jan. 2020

Bring your science and technology expertise to Capitol Hill to work at the interface between geoscience and public policy. The GSA-USGS Congressional Science Fellowship provides a rare opportunity for a geoscientist to spend a year working for a member of Congress or congressional committee. If you are a geoscientist with a broad scientific background, experience applying scientific knowledge to societal challenges, and a passion for helping shape the future of the geoscience profession, GSA and the USGS invite your application. The fellowship is open to GSA members who are U.S. citizens or permanent residents. A Ph.D. at the time of appointment or a master’s degree in engineering plus five years of professional experience is required.

Learn more at www.geosociety.org/csf or by contacting Kasey White, +1-202-669-0466, [email protected].

2020 GSA SCIENCE EDITORS

GSA depends on the volunteer efforts of many science editors, associate editors, and editorial board members to ensure the timeliness and quality of its publications. GSA thanks the editors whose terms ended 31 Dec. 2019 for their service to the Society and to the science: Judith Totman Parrish, Geology; Mark C. Quigley, Geology; and R. Damian Nance, Lithosphere. Thanks also go to Laurent Godin and Sarah Roeske for their service to Lithosphere. With the journal moving to GeoScienceWorld this year, their editor terms with GSA also end.

Thank you to our continuing editors: Geosphere, Andrea Hampel, Leibniz Please join us in welcoming the GSA books, Joan Florsheim, University Hannover science editors beginning terms this University of California, Santa Barbara GSA Bulletin, Brad Singer, University of month: GSA books, Christian Koeberl, University of Wisconsin–Madison GSA books, Nancy Riggs, Northern Vienna and Natural History Museum, Vienna GSA Bulletin, Rob Strachan, University of Arizona University Environmental & Engineering Geoscience, Portsmouth Geology, Gerald Dickens, Rice University Brian G. Katz, Florida Dept. of Environmen- GSA Bulletin, Wenjiao Xiao, Chinese Academy Geology, William Clyde, University of tal Protection of Sciences New Hampshire Geology, Dennis Brown, Instituto de GSA Today, Peter Copeland, University of Ciencias de la Tierra “Jaume Almera,” CSIC Houston Geology, Chris Clark, Curtin University GSA Today, Mihai N. Ducea, University of Find your research at https://pubs Geology, James G. Schmitt, Montana State Arizona .geoscienceworld.org/gsa. University Lithosphere, Laurent Godin, Queen’s Geosphere, Shanaka de Silva, Oregon State University University Lithosphere, Sarah Roeske, University of Geosphere, David E. Fastovsky, University California Davis of Rhode Island

44 GSA Today | January 2020 Experience GSA’s Annual Meeting from One On To the Future Perspective!

Do you remember your first GSA Annual Meeting? Were you traditional geologists, and who could be future collaborators in pro- excited for the great science and new connections you would find? moting diversity within the geosciences—one of Jazzy’s profes- Were you overwhelmed by the scope of the meeting and legendary sional goals. Most importantly, Jazzy hoped that “OTF connects me geologists you might meet? Did it make an impact on your career to people now and in the future that I can look to for advice should decisions? These questions were at the forefront for many of the 2019 I encounter any issues, and who will support me as a geologist On To the Future (OTF) participants who attended their first GSA regardless of who I am. It is so important to find people who sup- Annual Meeting in Phoenix, Arizona, USA. We took an opportunity port you for being you, and I hope that I can provide that support to talk with Jazzy Graham-Davis, a 2019 graduate of Portland State to others as well and find a community of people similar to me. University and OTF participant, before the annual meeting to learn I would love to support OTF in the future as a professional to help their hopes and expectations for the program, as well as after the up-and-coming geologists find their place within the field.” meeting to learn about the impact their OTF experience made. How did Jazzy summarize their experience after the meeting? Before the 2019 GSA Annual Meeting, Jazzy was excited to be “I had a great time at GSA! OTF exceeded my expectations.” immersed in the atmosphere of a professional meeting, attending it For Jazzy, the annual meeting was incredibly productive, provid- with an open mind but, admittedly, few expectations—other than to ing opportunities to work with mentors at various early career be overwhelmed by the variety of events, presentations, and people workshops to receive résumé, cover letter, and career path who would be present. They were particularly interested in meeting advice—important feedback for recent graduates who are seeking individuals from different backgrounds who did not represent jobs or applying to graduate schools. Further, meeting individuals of different backgrounds was empowering, allowing Jazzy to feel comfortable sharing their own struggles within geology and GSA meetings, and discussing how the community can work to address and improve these issues, particularly in making geology more accessible to people with disabilities. Most importantly, for Jazzy, “It was amazing to hear from lifelong members of GSA that people like us OTF scholars are the future of GSA. It made a huge impact on my goals for future GSA meetings and the ways that I would like to be involved. I definitely will be active in GSA throughout my career and would like to do what I can to further improve diversity at these events.” Lastly, Jazzy told us they would love to come back and serve as a mentor in the future. Jazzy is just one of the many OTF students you have helped. On the GSAF News & Events page, we are sharing the before- and-after reflections of five other OTF participants as part of our “Community of Support” series. Visit us at https://gsa-foundation .org/news-events/ to see how your support for OTF has made an impact on these participants’ lives. You can support this community at https://gsa-foundation.org/donate/#fund_name=on-to-the- Jazzy Graham-Davis, a 2019 On To the Future future-fund, or contact Clifton Cullen at +1-303-357-1007 or participant, with their service dog, Jack. [email protected].

www.gsa-foundation.org Field Guide 43 FIELD GUIDE 43

dited by R.A. ais Jr., R.. ott Jr., and I.W.. aliel Geology of the Baraboo, Wisconsin, Area: Geology of the Baraboo, Geological Society of America Field Guide Wisconsin, Area Edited by Richard A. Davis Jr., Robert H. Dott Jr., and Ian W.D. Dalziel, 2016 With its wide variety of geological features and phenomena packed into a small area, the Baraboo of south-central Wisconsin is among the most Geology of the Baraboo, Wisconsin, Area visited parts of the Midwest by geology students. This guidebook, the ﬁ rst comprehensive look at the area in decades, covers the spectrum of geological features present in the area, and it is useful as a teaching tool. An exceptional outdoor classroom, the Baraboo area contains a spectrum of geology, including excellent examples of geomorphology, glacial geology, structural geology, petrology, stratigraphy, and sedimentology. Ages of the strata range from 1.7-billion-year-old Precambrian to the Quaternary. The area has been studied for about a century, but it still holds surprises for professionals and students alike.

FLD043, 81 p., ISBN 9780813700434 | now $15.00 |

N O W O

BUY ONLINE http://rock.geosociety.org/store/ Y Field Guide 43 } $ dited by Richard A. ais Jr., Robert . ott Jr., and Ian W.. aliel toll-free 1.888.443.4472 | +1.303.357.1000, option 3 | [email protected] 15

BDY. AGES (Ma) AMBRIAN 541 0 PERIOD 635 v. 5.0 PRECERA CARAN 720 Geologic Time Scale Poster EDIA A EON YOGENIAN AGE CR (Ma) PICKS (Ma) O- TONIAN 1000 AGE NEOPR M S .90 ALEOZOIC 251 TEROZOIC P 200 254.14 1 EPOCH 750 D G 259.1 STENIAN PERIOD G CHANGHSINGIAN 265.1 AGE 268.8 1400 (Ma) WUCHIAPINGIANANIAN SIAN Lopin- T 272.95 PICKS CAPI 1000 ECTA (Ma) gian ORDIAN ~283.5 W ADIAN O- SA RO 600 AGE 66.0 Guada- MESOPR 1 KUNGURIAN 290.1 lupian TEROZOIC 260 295.0 CALYMMIAN

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22 C22 INDU , www.stratigraphy TRIA boundaries 59.2 age C23 Y and Stratigraphy 50 23 EARL units on THANETIAN of , no. 3, p. 199–204 (updated.org/timescale. 2017, .6 240 v. 36 24 61 Names Commission .geosociety C24 Eon. International SELANDIAN Phanerozoic , https://doi.org/10.1016/B978-0-444-59425-9.00004-4. the Chart: 55 250 of BUY ONLINE 25 C25http://rock.geosociety.org/store/., Bowring, S.A., and Babcock,Eras L.E., compilers, 2018, Geologic Ti } the ANIAN 66.0 are 26 D Chronostratigraphic C26 Paleozoic , J.D., Geissman, J.Wand

Walker International me Scale 2012: Boston, USA, Elsevier ALEOCENE 2012,

Mesozoic, .L., P P 60 27 C27 *The Pleistocene is divided into four ages, but only two are shown here. What is shown as Calabrian is actually three ages—Calabrian from 1.80 to 0.781 Ma, Middle from 0.781 to 0.126 Ma, and Late from 0.126 to 0.0117 Ma. | Cenozoic, |Gibbard, toll-free 1.888.443.4472 +1.303.357.1000,C28 optionThe 3 and [email protected]., and Fan, J.-X., 2013, The ICS International Chronostratigraphic Chart: Episodes 28 and picks of boundaries, S., usually follow theP. Cohen et al. (2013, updated) compilation. The numbered epochs and ages of the Cambrian are provisional. A “~” before a numerical age estimate typically indicates an associated error of ±0.4 to over 1.6 Ma. Finney 29 C29 REFERENCESK.M., CITED y, S.C., Gibbard, C30 Cohen, 65 30 Australia, 5–10 August 2012.) .M, Ogg, J.G., Schmitz, M.D., et al., 2012, The Geologic Ti Cohen, K.M., Finne Gradstein, F Previous versions of the time scale and previously published papers about the time scale and its evolution are posted to http://www

46 GSA Today | January 2020 GSA 2020 Annual Meeting & Exposition

che oline Bu Call for Short Course © Car and Technical Session Proposals It’s time to plan for our 2020 Annual Meeting in Montréal, Québec, Canada. We look forward to highlighting the geology in the area. We challenge you to propose a short course and/or a technical session that will teach your colleagues and promote discussion about the incredible regional geology. A MESSAGE FROM THE GSA EXECUTIVE DIRECTOR

Exchange the geology by organizing and chairing a Dear Colleagues, Technical Session. GSA is committed to the ideal of scientific discovery, Technical Session deadline: 1 Feb. 2020 rigor, diversity, and integrity. Proposals are being taken for both Pardee Symposia and Topical I invite you to prepare a proposal for a technical session Sessions. for the 2020 Annual Meeting that reflects your expertise and research but also pushes the boundaries of the disci- https://gsa.confex.com/gsa/2020AM/cfs.cgi pline. Without expanding our horizon, we will not move the geosciences forward and keep our relevance. I also chal- Share the geology as an instructor through a Short Course. lenge you to broaden your reach with whom you collabo- Short Course proposal deadline: 1 Feb. 2020 rate by including diversity in all ways—discipline, career Courses run the Friday and Saturday before the Annual Meeting and progression, and individuals. are typically a half day to two full days. Thank you for considering sharing your science and https://gsa.confex.com/gsa/2020AM/shortcourse/cfs.cgi work at the GSA Annual Meeting.

Vicki S. McConnell

www.geosociety.org/annualmeeting SCIENCE EDITOR GSA is soliciting applications for three science co-editors for the journal Geology. The four-ear terms begin anuar . Duties include: ensuring stringent peer OPENINGS review and expeditious processing of manuscripts; making nal acceptance or rejection decisions after considering reviewer recommendations; and, along with your co-editors, setting the editorial tone of Geology and maintaining excellent FOR content through publication of a diverse range of papers. Geology editors should expect to handle 200–250 manuscripts each year, with ~35 active manuscripts on any given day. 2021

3 POSITIONS AVAILABLE

GEOLOGY Research interests that complement those of the GEOLOGY continuing editors include, but are not limited to: geochemistry, geomorphology, petrology, tectonics, tectonophysics, structural geology, seismology, volcanology, Earth surface processes, planetary geology, Quaternary studies, hydrogeology, and economic geology.

Note: Because of the volume of papers received by Geology and the breadth of the topics covered, editors must be willing to handle papers outside of their main disciplines. A SUCCESSFUL EDITOR WILL HAVE: } a broad interest and experience in geosciences, TO APPLY including familiarity with new trends; Submit the following to Jeanette Hammann, hammanngeosocietorg: } experience as an editor } A letter detailing how your experience (including editorial or associate editor for experience) quali es you for a science editor position, and a geoscience journal } A curriculum itae (experience with a GSA publication is preferred The GSA Publications Committee will review applications at its spring but not required); 2020 meeting. The Committee won’t consider incomplete applications. } international recognition and familiarity with many Editors work out of their current locations at work or at home. The geoscientists and their positions are considered voluntary, but GSA provides an annual stipend work; and funds for of ce expenses. EALE: First consideration will be given to nominations or applications received by arch . } a progressive attitude and a willingness to take risks and encourage innovation; } ability to make timely decisions; and } a sense of perspective and humor.

GSA encourages applications from all quali ed persons and is committed to diversity.