Geologic Field-Trip Guide to Long Valley Caldera, California
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Geologic Map of the Long Valley Caldera, Mono-Inyo Craters
DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP 1-1933 US. GEOLOGICAL SURVEY GEOLOGIC MAP OF LONG VALLEY CALDERA, MONO-INYO CRATERS VOLCANIC CHAIN, AND VICINITY, EASTERN CALIFORNIA By Roy A. Bailey GEOLOGIC SETTING VOLCANISM Long Valley caldera and the Mono-Inyo Craters Long Valley caldera volcanic chain compose a late Tertiary to Quaternary Volcanism in the Long Valley area (Bailey and others, volcanic complex on the west edge of the Basin and 1976; Bailey, 1982b) began about 3.6 Ma with Range Province at the base of the Sierra Nevada frontal widespread eruption of trachybasaltic-trachyandesitic fault escarpment. The caldera, an east-west-elongate, lavas on a moderately well dissected upland surface oval depression 17 by 32 km, is located just northwest (Huber, 1981).Erosional remnants of these mafic lavas of the northern end of the Owens Valley rift and forms are scattered over a 4,000-km2 area extending from the a reentrant or offset in the Sierran escarpment, Adobe Hills (5-10 km notheast of the map area), commonly referred to as the "Mammoth embayment.'? around the periphery of Long Valley caldera, and The Mono-Inyo Craters volcanic chain forms a north- southwestward into the High Sierra. Although these trending zone of volcanic vents extending 45 km from lavas never formed a continuous cover over this region, the west moat of the caldera to Mono Lake. The their wide distribution suggests an extensive mantle prevolcanic basement in the area is mainly Mesozoic source for these initial mafic eruptions. Between 3.0 granitic rock of the Sierra Nevada batholith and and 2.5 Ma quartz-latite domes and flows erupted near Paleozoic metasedimentary and Mesozoic metavolcanic the north and northwest rims of the present caldera, at rocks of the Mount Morrisen, Gull Lake, and Ritter and near Bald Mountain and on San Joaquin Ridge Range roof pendants (map A). -
Cross-References ASTEROID IMPACT Definition and Introduction History of Impact Cratering Studies
18 ASTEROID IMPACT Tedesco, E. F., Noah, P. V., Noah, M., and Price, S. D., 2002. The identification and confirmation of impact structures on supplemental IRAS minor planet survey. The Astronomical Earth were developed: (a) crater morphology, (b) geo- 123 – Journal, , 1056 1085. physical anomalies, (c) evidence for shock metamor- Tholen, D. J., and Barucci, M. A., 1989. Asteroid taxonomy. In Binzel, R. P., Gehrels, T., and Matthews, M. S. (eds.), phism, and (d) the presence of meteorites or geochemical Asteroids II. Tucson: University of Arizona Press, pp. 298–315. evidence for traces of the meteoritic projectile – of which Yeomans, D., and Baalke, R., 2009. Near Earth Object Program. only (c) and (d) can provide confirming evidence. Remote Available from World Wide Web: http://neo.jpl.nasa.gov/ sensing, including morphological observations, as well programs. as geophysical studies, cannot provide confirming evi- dence – which requires the study of actual rock samples. Cross-references Impacts influenced the geological and biological evolu- tion of our own planet; the best known example is the link Albedo between the 200-km-diameter Chicxulub impact structure Asteroid Impact Asteroid Impact Mitigation in Mexico and the Cretaceous-Tertiary boundary. Under- Asteroid Impact Prediction standing impact structures, their formation processes, Torino Scale and their consequences should be of interest not only to Earth and planetary scientists, but also to society in general. ASTEROID IMPACT History of impact cratering studies In the geological sciences, it has only recently been recog- Christian Koeberl nized how important the process of impact cratering is on Natural History Museum, Vienna, Austria a planetary scale. -
California Pika Consortium Mono Basin- Bodie Hills Field Trip Sunday, July 31, 2011 – Monday, August 1, 2011
California Pika Consortium Mono Basin- Bodie Hills Field Trip Sunday, July 31, 2011 – Monday, August 1, 2011 Amended with comments and observations in red font after the Field Trip: 13 August 2011 (cim) Field Trip Objectives: Provide a forum for California Pika Consortium (CPC) participants to observe and discuss topics of current interest at key and relevant field sites. In particular, to observe and contrast pika habitat abundance, quality, and connectivity in the Sierra Nevada and Bodie Hills; to visit low-elevation and high-elevation sites typical of the central-eastern Sierra Nevada; to observe and compare anthropogenic habitat (ore dumps) and native talus sites in the Bodie Hills; to discuss the relevance of these observations to climate relationships, talus thermal regimes, dispersal and connectivity (source/sink), population dynamics, and population processes in California and elsewhere in American pika’s range. Agenda Sunday, July 31 (see accompanying Road Log and Maps for specifics) 8:00 am Convene at USFS Mono Basin Scenic Area Visitor Center, consolidate vehicles (don’t forget lunch, snacks, water) 8:15 am Depart Visitor Center for Stops 1-7 Stop 1: Lundy Cyn (short walk) Stop 2: Virginia Lks Cyn Trailhead (short walk) Stop 3: Conway Highlands Overview instead we made a brief stop to “Benjamin Buttes” Stop 4: Bodie Pass – LUNCH (bring your own) Stop 5: Syndicate Mine, Bodie (short walk) Stop 6: Chemung Mine weather did not allow us to visit this site Stop 7: Serrita Mine, New York Hill, Masonic District (short walk) weather did not allow us to visit this site Note: If time gets short, we might forego one or more of the final stops ~ 7pm? Dinner (no host) at Tioga Gas Mart, Tioga Toomey’s Café, 0.25 miles west on SR 120 of junction with US 395. -
Saving the Information Commons a New Public Intere S T Agenda in Digital Media
Saving the Information Commons A New Public Intere s t Agenda in Digital Media By David Bollier and Tim Watts NEW AMERICA FOUNDA T I O N PUBLIC KNOWLEDGE Saving the Information Commons A Public Intere s t Agenda in Digital Media By David Bollier and Tim Watts Washington, DC Ack n owl e d g m e n t s This report required the support and collaboration of many people. It is our pleasure to acknowledge their generous advice, encouragement, financial support and friendship. Recognizing the value of the “information commons” as a new paradigm in public policy, the Ford Foundation generously supported New America Foundation’s Public Assets Program, which was the incubator for this report. We are grateful to Gigi Sohn for helping us develop this new line of analysis and advocacy. We also wish to thank The Open Society Institute for its important support of this work at the New America Foundation, and the Center for the Public Domain for its valuable role in helping Public Knowledge in this area. Within the New America Foundation, Michael Calabrese was an attentive, helpful colleague, pointing us to useful literature and knowledgeable experts. A special thanks to him for improv- ing the rigor of this report. We are also grateful to Steve Clemons and Ted Halstead of the New America Foundation for their role in launching the Information Commons Project. Our research and writing of this report owes a great deal to a network of friends and allies in diverse realms. For their expert advice, we would like to thank Yochai Benkler, Jeff Chester, Rob Courtney, Henry Geller, Lawrence Grossman, Reed Hundt, Benn Kobb, David Lange, Jessica Litman, Eben Moglen, John Morris, Laurie Racine and Carrie Russell. -
Satellite Observations of Fumarole Activity at Aluto Volcano, Ethiopia: Implications for Geothermal Monitoring and Volcanic Hazard
Accepted Manuscript Satellite observations of fumarole activity at Aluto volcano, Ethiopia: Implications for geothermal monitoring and volcanic hazard Mathilde Braddock, Juliet Biggs, Iain M. Watson, William Hutchison, David M. Pyle, Tamsin A. Mather PII: S0377-0273(17)30118-X DOI: doi: 10.1016/j.jvolgeores.2017.05.006 Reference: VOLGEO 6091 To appear in: Journal of Volcanology and Geothermal Research Received date: 24 February 2017 Revised date: 6 May 2017 Accepted date: 7 May 2017 Please cite this article as: Mathilde Braddock, Juliet Biggs, Iain M. Watson, William Hutchison, David M. Pyle, Tamsin A. Mather , Satellite observations of fumarole activity at Aluto volcano, Ethiopia: Implications for geothermal monitoring and volcanic hazard, Journal of Volcanology and Geothermal Research (2017), doi: 10.1016/ j.jvolgeores.2017.05.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT Satellite observations of fumarole activity at Aluto volcano, Ethiopia: implications for geothermal monitoring and volcanic hazard Mathilde Braddock1*, Juliet Biggs2, Iain M. Watson2, William Hutchison3, David M. Pyle4 and Tamsin A. Mather4 1 School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, UK 2 COMET, School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, UK 3 School of Earth and Environmental Sciences, University of St. -
Structural Geology of the Cat Mountain Rhyolite in the Northern Tucson Mountains, Pima County, Arizona
Structural geology of the Cat Mountain rhyolite in the northern Tucson Mountains, Pima County, Arizona Item Type text; Thesis-Reproduction (electronic) Authors Knight, Louis Harold, 1943- Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 26/09/2021 12:31:24 Link to Item http://hdl.handle.net/10150/551931 STRUCTURAL GEOLOGY OF THE CAT MOUNTAIN RHYOLITE IN THE NORTHERN TUCSON MOUNTAINS, PIMA COUNTY, ARIZONA Ly Louis H. Knight, Jr. A Thesis Submitted to the Faculty of the DEPARTMENT OF GEOLOGY In Partial Fulfillment of the Requirements For the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA 196? STATEMENT BY AUTHOR This thesis has been submitted in partial fulfill ment of the requirements for an advanced degree at the University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permission, provided that accurate acknow ledgement of source is made. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judgement the proposed use of the material is in the interests of scholarship. In all other instances, however, permission must be obtained from the author. -
Yosemite, Lake Tahoe & the Eastern Sierra
Emerald Bay, Lake Tahoe PCC EXTENSION YOSEMITE, LAKE TAHOE & THE EASTERN SIERRA FEATURING THE ALABAMA HILLS - MAMMOTH LAKES - MONO LAKE - TIOGA PASS - TUOLUMNE MEADOWS - YOSEMITE VALLEY AUGUST 8-12, 2021 ~ 5 DAY TOUR TOUR HIGHLIGHTS w Travel the length of geologic-rich Highway 395 in the shadow of the Sierra Nevada with sightseeing to include the Alabama Hills, the June Lake Loop, and the Museum of Lone Pine Film History w Visit the Mono Lake Visitors Center and Alabama Hills Mono Lake enjoy an included picnic and time to admire the tufa towers on the shores of Mono Lake w Stay two nights in South Lake Tahoe in an upscale, all- suites hotel within walking distance of the casino hotels, with sightseeing to include a driving tour around the north side of Lake Tahoe and a narrated lunch cruise on Lake Tahoe to the spectacular Emerald Bay w Travel over Tioga Pass and into Yosemite Yosemite Valley Tuolumne Meadows National Park with sightseeing to include Tuolumne Meadows, Tenaya Lake, Olmstead ITINERARY Point and sights in the Yosemite Valley including El Capitan, Half Dome and Embark on a unique adventure to discover the majesty of the Sierra Nevada. Born of fire and ice, the Yosemite Village granite peaks, valleys and lakes of the High Sierra have been sculpted by glaciers, wind and weather into some of nature’s most glorious works. From the eroded rocks of the Alabama Hills, to the glacier-formed w Enjoy an overnight stay at a Yosemite-area June Lake Loop, to the incredible beauty of Lake Tahoe and Yosemite National Park, this tour features lodge with a private balcony overlooking the Mother Nature at her best. -
Full-Text PDF (Final Published Version)
Pritchard, M. E., de Silva, S. L., Michelfelder, G., Zandt, G., McNutt, S. R., Gottsmann, J., West, M. E., Blundy, J., Christensen, D. H., Finnegan, N. J., Minaya, E., Sparks, R. S. J., Sunagua, M., Unsworth, M. J., Alvizuri, C., Comeau, M. J., del Potro, R., Díaz, D., Diez, M., ... Ward, K. M. (2018). Synthesis: PLUTONS: Investigating the relationship between pluton growth and volcanism in the Central Andes. Geosphere, 14(3), 954-982. https://doi.org/10.1130/GES01578.1 Publisher's PDF, also known as Version of record License (if available): CC BY-NC Link to published version (if available): 10.1130/GES01578.1 Link to publication record in Explore Bristol Research PDF-document This is the final published version of the article (version of record). It first appeared online via Geo Science World at https://doi.org/10.1130/GES01578.1 . Please refer to any applicable terms of use of the publisher. University of Bristol - Explore Bristol Research General rights This document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/red/research-policy/pure/user-guides/ebr-terms/ Research Paper THEMED ISSUE: PLUTONS: Investigating the Relationship between Pluton Growth and Volcanism in the Central Andes GEOSPHERE Synthesis: PLUTONS: Investigating the relationship between pluton growth and volcanism in the Central Andes GEOSPHERE; v. 14, no. 3 M.E. Pritchard1,2, S.L. de Silva3, G. Michelfelder4, G. Zandt5, S.R. McNutt6, J. Gottsmann2, M.E. West7, J. Blundy2, D.H. -
A Ballistics Analysis of the Deep Impact Ejecta Plume: Determining Comet Tempel 1’S Gravity, Mass, and Density
Icarus 190 (2007) 357–390 www.elsevier.com/locate/icarus A ballistics analysis of the Deep Impact ejecta plume: Determining Comet Tempel 1’s gravity, mass, and density James E. Richardson a,∗,H.JayMeloshb, Carey M. Lisse c, Brian Carcich d a Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA b Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721-0092, USA c Planetary Exploration Group, Space Department, Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, USA d Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA Received 31 March 2006; revised 8 August 2007 Available online 15 August 2007 Abstract − In July of 2005, the Deep Impact mission collided a 366 kg impactor with the nucleus of Comet 9P/Tempel 1, at a closing speed of 10.2 km s 1. In this work, we develop a first-order, three-dimensional, forward model of the ejecta plume behavior resulting from this cratering event, and then adjust the model parameters to match the flyby-spacecraft observations of the actual ejecta plume, image by image. This modeling exercise indicates Deep Impact to have been a reasonably “well-behaved” oblique impact, in which the impactor–spacecraft apparently struck a small, westward-facing slope of roughly 1/3–1/2 the size of the final crater produced (determined from initial ejecta plume geometry), and possessing an effective strength of not more than Y¯ = 1–10 kPa. The resulting ejecta plume followed well-established scaling relationships for cratering in a medium-to-high porosity target, consistent with a transient crater of not more than 85–140 m diameter, formed in not more than 250–550 s, for the case of Y¯ = 0 Pa (gravity-dominated cratering); and not less than 22–26 m diameter, formed in not less than 1–3 s, for the case of Y¯ = 10 kPa (strength-dominated cratering). -
Repeated Caldera Collapse and Ignimbrite Emplacement at a Peralkaline Volcano Nina Jordan, Silvio G
Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapse and ignimbrite emplacement at a peralkaline volcano Nina Jordan, Silvio G. Rotolo, Rebecca Williams, Fabio Speranza, William Mcintosh, Michael Branney, Stéphane Scaillet To cite this version: Nina Jordan, Silvio G. Rotolo, Rebecca Williams, Fabio Speranza, William Mcintosh, et al.. Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapse and ignimbrite emplacement at a peralkaline volcano. Journal of Volcanology and Geothermal Research, Elsevier, 2018, 349, pp.47-73. 10.1016/j.jvolgeores.2017.09.013. insu-01618160 HAL Id: insu-01618160 https://hal-insu.archives-ouvertes.fr/insu-01618160 Submitted on 17 Oct 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Accepted Manuscript Explosive eruptive history of Pantelleria, Italy: Repeated caldera collapse and ignimbrite emplacement at a peralkaline volcano Nina J. Jordan, Silvio G. Rotolo, Rebecca Williams, Fabio Speranza, William C. McIntosh, Michael J. Branney, Stéphane Scaillet PII: S0377-0273(17)30078-1 DOI: doi:10.1016/j.jvolgeores.2017.09.013 Reference: VOLGEO 6196 To appear in: Journal of Volcanology and Geothermal Research Received date: 31 January 2017 Revised date: 1 September 2017 Accepted date: 17 September 2017 Please cite this article as: Nina J. -
Chapter 8 Manzanar
CHAPTER 8 MANZANAR Introduction The Manzanar Relocation Center, initially referred to as the “Owens Valley Reception Center”, was located at about 36oo44' N latitude and 118 09'W longitude, and at about 3,900 feet elevation in east-central California’s Inyo County (Figure 8.1). Independence lay about six miles north and Lone Pine approximately ten miles south along U.S. highway 395. Los Angeles is about 225 miles to the south and Las Vegas approximately 230 miles to the southeast. The relocation center was named after Manzanar, a turn-of-the-century fruit town at the site that disappeared after the City of Los Angeles purchased its land and water. The Los Angeles Aqueduct lies about a mile to the east. The Works Progress Administration (1939, p. 517-518), on the eve of World War II, described this area as: This section of US 395 penetrates a land of contrasts–cool crests and burning lowlands, fertile agricultural regions and untamed deserts. It is a land where Indians made a last stand against the invading white man, where bandits sought refuge from early vigilante retribution; a land of fortunes–past and present–in gold, silver, tungsten, marble, soda, and borax; and a land esteemed by sportsmen because of scores of lakes and streams abounding with trout and forests alive with game. The highway follows the irregular base of the towering Sierra Nevada, past the highest peak in any of the States–Mount Whitney–at the western approach to Death Valley, the Nation’s lowest, and hottest, area. The following pages address: 1) the physical and human setting in which Manzanar was located; 2) why east central California was selected for a relocation center; 3) the structural layout of Manzanar; 4) the origins of Manzanar’s evacuees; 5) how Manzanar’s evacuees interacted with the physical and human environments of east central California; 6) relocation patterns of Manzanar’s evacuees; 7) the fate of Manzanar after closing; and 8) the impact of Manzanar on east central California some 60 years after closing. -
Compositional Zoning of the Bishop Tuff
JOURNAL OF PETROLOGY VOLUME 48 NUMBER 5 PAGES 951^999 2007 doi:10.1093/petrology/egm007 Compositional Zoning of the Bishop Tuff WES HILDRETH1* AND COLIN J. N. WILSON2 1US GEOLOGICAL SURVEY, MS-910, MENLO PARK, CA 94025, USA 2SCHOOL OF GEOGRAPHY, GEOLOGY AND ENVIRONMENTAL SCIENCE, UNIVERSITY OF AUCKLAND, PB 92019 AUCKLAND MAIL CENTRE, AUCKLAND 1142, NEW ZEALAND Downloaded from https://academic.oup.com/petrology/article/48/5/951/1472295 by guest on 29 September 2021 RECEIVED JANUARY 7, 2006; ACCEPTED FEBRUARY 13, 2007 ADVANCE ACCESS PUBLICATION MARCH 29, 2007 Compositional data for 4400 pumice clasts, organized according to and the roofward decline in liquidus temperature of the zoned melt, eruptive sequence, crystal content, and texture, provide new perspec- prevented significant crystallization against the roof, consistent with tives on eruption and pre-eruptive evolution of the4600 km3 of zoned dominance of crystal-poor magma early in the eruption and lack of rhyolitic magma ejected as the BishopTuff during formation of Long any roof-rind fragments among the Bishop ejecta, before or after onset Valley caldera. Proportions and compositions of different pumice of caldera collapse. A model of secular incremental zoning is types are given for each ignimbrite package and for the intercalated advanced wherein numerous batches of crystal-poor melt were plinian pumice-fall layers that erupted synchronously. Although released from a mush zone (many kilometers thick) that floored the withdrawal of the zoned magma was less systematic than previously accumulating rhyolitic melt-rich body. Each batch rose to its own realized, the overall sequence displays trends toward greater propor- appropriate level in the melt-buoyancy gradient, which was self- tions of less evolved pumice, more crystals (0Á5^24 wt %), and sustaining against wholesale convective re-homogenization, while higher FeTi-oxide temperatures (714^8188C).