A Late Archaic Burial from the Thursday Site, Utah

Total Page:16

File Type:pdf, Size:1020Kb

A Late Archaic Burial from the Thursday Site, Utah UC Merced Journal of California and Great Basin Anthropology Title A Late Archaic Burial from the Thursday Site, Utah Permalink https://escholarship.org/uc/item/86w6n2rt Journal Journal of California and Great Basin Anthropology, 18(1) ISSN 0191-3557 Authors Shearin, Nancy Loveland, Carol Parr, Ryan et al. Publication Date 1996-07-01 Peer reviewed eScholarship.org Powered by the California Digital Library University of California REPORT A Late Archaic Burial from the with the temporal span of die cultural periods Thursday Site, Utah represented by the surface artifacts (Archaic- Formative), provides an opportunity to study NANCY SHEARIN cultural use of this environment during the Late Bureau of Land Management, Fillmore, UT 84631. Holocene. CAROL LOVELAND' Toward this end, a site evaluation involving Dept. of Sociology, Social Work, and Anthropology, survey, mapping, and limited testing of cultural Utah State Univ., Logan, UT 84323. features, geomorphology, and stratigraphy was RYAN PARR begun in 1992 (Shearin 1994a). Preliminary re­ Dept, of Anthropology, Univ. of Utah, Salt Lake City, UT 84112. sults of macro- and microbotanical analyses of soil samples, correlated with radiocarbon analy­ DOROTHY SACK Dept. of Geography, Ohio University, Athens, OH sis from cultural features and marsh strati­ 45701. graphy, indicate vegetation changes from marsh to salt desert shrub over the past 2,(K)0 years, as well as cultural exploitation of a variety of lacus­ In 1992, the salvage excavation of a burial located in central Utah was per­ trine plant and animal resources (Shearin 1995; formed by archaeologists from the Bureau Shearin et al. 1996). of Land Management. Radiocarbon AMS The burial from the Thursday Site reported analysis of bone from the burial returned an age of between 70 B.C. and A.D. 220 (two herein is in an area mapped as Holocene dunes sigma calibrated), placing the burial within on Oviatt's (1989) surficial geologic map of part the Late Archaic cultural period in the of the Sevier Desert. Oviatt's map shows fine­ eastern Great Basin (Wilde arui Tasa 1991). grained lacustrine deposits to the east of the The paucity of reported human material from this period makes this individual an dune area where the burial is located, Sevier important contribution to the osteometric River alluvium to the north, and a large region data set. The purpose of this paper is to re­ of Holocene Sevier River delta sediments ex­ port information obtained from this burial. tending from the northwest to the southeast mar­ gin of the site. Exposed portions of this delta range in elevation from about 1,379 to 1,381 m. THE Thursday Site (42Mdl053) is a large, (4,524 to 4,532 ft.) above sea level. This appa­ multicomponent prehistoric site that encompasses rent composite delta was probably deposited in part of the north shore of Sevier Dry Lake near association with two Late Holocene highstands the mouth of Uie Sevier River (Fig. 1). Artifact of Sevier Lake, which are represented by concentrations and cultural features are scattered beaches having crestal elevations of about 1,380 over a three-mile arc with clusters occurring and 1,382 m. (4,527 and 4,535 ft.) (Oviatt near river paleochaimels and in association with 1988, 1989). Oviatt (1989) concluded that the deltaic deposits. The majority of the cultural higher beach was probably formed between features are circular, organic stains similar in about 3,000 and 2,000 years B.P. and that die size and appearance to those reported at Still­ lower beach was built sometime in the last 500 water Marsh by Raven and Elston (1988) and in years. The elevation (1,381 m. [4,532 ft.]) and the Great Salt Lake Wetlands (Fawcett and age (1,870 years RCYBP, see below), of the Simms 1993). The large size of this site, along burial site support Oviatt's (1989) interpretation. 156 JOURNAL OF CALIFORNIA AND GREAT BASIN ANTHROPOLOGY the origin of the burial pit. However, as a pre­ cautionary measure, excavation proceeded in 10- cm. increments until compact soil at the top of the pit was located. Excavated fill was screened using 1/8-in. mesh. Also, since the intention was to collect suitable skeletal elements for mi­ tochondrial DNA (mtDNA) analysis, precautions were used by the excavators to prevent modern DNA contamination. This was accomplished by keeping the pit covered, wearing gloves during the excavation, and wearing sterile gloves in particular when collecting bone for ratDNA study. Bone samples for mtDNA and radiocarbon analysis were placed in aluminum wrap and packed separately for transport. Soil samples for microbotanical, moUusk, and grain size Fig. 1. General location map of the Thursday Site analysis were collected from the modern sur­ (42Mdl053). face, several places within the burial pit, and from two locations below the pit: Strata C and During the winter of 1992, new gullies were D, 100 cm. and 150 cm., respecfively, from formed in dunes located at the north end of Sev­ modern ground surface (Fig. 2). All excavated ier Dry Lake. One of these chaimels cut into a material was reinterred at the same location. prehistoric burial pit and exposed the pelvic area Samples for pollen analysis were processed and upper femora. The skeletal elements were using methods adapted for alkaline soils (New­ visible on the southeast side of the erosional man 1994). Mollusk classification was per­ channel and were within 40 cm. of the modern formed using the format ouflined in Simms and ground surface. After consultation with Native Isgreen (1984) and the environmental habitat for American tribal representatives and appropriate each genus was noted (Simms and Isgreen 1984; state and federal agencies, the decision was Shearin et al. 1996). Additionally, the associa­ made to remove the burial in order to prevent ted soil was classified according to a geomor- complete exposure and subsequent contextual phological standard based on grain size and per­ damage from either natural causes or vandalism. cent of sand, silt, and clay (Sack 1995). The Agreement was reached during the consultation bone sample collected for radiocarbon analysis process for limited study of the remains and for was sent to Beta Analytic, Inc., for accelerator subsequent reburial (Shearin 1992). mass spectrometry (AMS) radiocarbon analysis. In choosing methods for the osteomefric METHODS analysis, consideration was given to the fact that A one-meter square was used as the excava­ all skeletal material would be reinterred and tion unit, and horizontal provenience was estab­ would not be available for future study. Thus, lished from the permanent site datum (Shearin standard measurement data sets suitable for 1994b). Since skeletal elements were exposed in comparison with Amerindians and prehistoric the gully profile on the west end of the burial, it Great Basin populations were selected as the was possible to estimate depdi from surface for most appropriate methodology. Pelvic and skull REPORT 157 1 meter N O - modem ground surface 0.5 m. — 1.0 m — Site No. 42Mdl053 1,5 m, — Thursday Site Feature 3 North-South Profile I 7 m. Fig. 2. Profile map of burial pit (B) and associated strata. Stratum A is the surface stratum; Strata C and D are laminated deltaic sediments. attributes (Bass 1987), femoral midshaft circum­ In order to obtain the maximum amount of ference (Black 1978), and femoral and humeral information from this prehistoric individual, head measurements (Krogman 1962) were used mtDNA was extracted and characterized from to obtain sex determination. Age assessment two rib samples. Although mtDNA analysis is was based on analysis of the developmental stage not currenfly a routine procedure for ancient of the pubic portion of the innominates (Katz skeletal material, it adds a uniquely informative and Suchey 1986), dental attrition (Ubelaker method to archaeological inquiry (Wallace and 1989) and the degree of suture ossification Torroni 1992). When well-preserved human (Krogman 1962). Trotter and Gleser's (1958) skeletal remains are uncovered at a site, it is stature estimates for Mongoloid males were possible to extract genetic material, or DNA, used. The methodology provided in Bass (1987) from ancient bone with the phenol-chloroform was followed for cranial, postcranial, and non- method. Specific, informative DNA sequences metric traits in order to provide comparative are then amplified for further study by the poly­ information for physical attributes. Dentition merase chain reaction (PCR). This technique is was examined for evidence of wear, enamel hy­ used to replicate, to quantitative amounts, seg­ poplasia and/or caries, as well as for periodontal ments of DNA containing specific sequences re­ disease. ferred to as "genetic markers." In particular 158 JOURNAL OF CALIFORNIA AND GREAT BASIN ANTHROPOLOGY combinations, these markers are group specific. were observed. No cultural material was recov­ For example, Amerindians (both contemporary ered from the fill excavated from the burial pit. and ancient) can be classified into four specific The deepest point of the burial pit occurred be­ genetic groups or lineages (A, B, C and D [for neath the lower thoracic/lumbar region, where complete characterization and technical details dark, organic soil was encountered, suggesting concerning the markers defining these lineages, deposiUon from decay (Figs. 4 and 5). The po­ see Stone and Stoneking 1993]) based on partic­ sition of the body would have allowed a decay ular markers found in the sequence of mtDNA pool to develop, and because vertebra T-5 (Schurr et al. 1990; Torroni et al. 1993a, through L-5 were either highly fragmentary or 1993b). Mitochondrial DNA is especially useful absent, it was assumed that the decay process in this sense because it is inherited only through (and/or bioturbation) destroyed these elements. maternal cytoplasm. For this reason, mtDNA The bones of both feet were affected by erosion­ lineages, defined by specific genetic markers, al processes and were either lost or located out allow limited determinations of ancestral/descen- of context.
Recommended publications
  • Climate Change and Utah: the Scientific Consensus September 2007
    Climate Change and Utah: The Scientific Consensus September 2007 Executive Summary As directed by Governor Jon Huntsman’s Blue Ribbon Advisory Council on Climate Change (BRAC), this report summarizes present scientific understanding of climate change and its potential impacts on Utah and the western United States. Prepared by scientists from the University of Utah, Utah State University, Brigham Young University, and the United States Department of Agriculture, the report emphasizes the consensus view of the national and international scientific community, with discussion of confidence and uncertainty as defined by the BRAC. There is no longer any scientific doubt that the Earth’s average surface temperature is increasing and that changes in ocean temperature, ice and snow cover, and sea level are consistent with this global warming. In the past 100 years, the Earth’s average surface temperature has increased by about 1.3°F, with the rate of warming accelerating in recent decades. Eleven of the last 12 years have been the warmest since 1850 (the start of reliable weather records). Cold days, cold nights, and frost have become less frequent, while heat waves have become more common. Mountain glaciers, seasonal snow cover, and the Greenland and Antarctic ice sheets are decreasing in size, global ocean temperatures have increased, and sea level has risen about 7 inches since 1900 and about 1 inch in the past decade. Based on extensive scientific research, there is very high confidence that human- generated increases in greenhouse gas concentrations are responsible for most of the global warming observed during the past 50 years. It is very unlikely that natural climate variations alone, such as changes in the brightness of the sun or carbon dioxide emissions from volcanoes, have produced this recent warming.
    [Show full text]
  • The Confusion Range, West-Central Utah: Fold-Thrust Deformation and a Western Utah Thrust Belt in the Sevier Hinterland
    The Confusion Range, west-central Utah: Fold-thrust deformation and a western Utah thrust belt in the Sevier hinterland David C. Greene* Department of Geosciences, Denison University, Granville, Ohio 43023, USA ABSTRACT INTRODUCTION tions together while delineating the lateral and oblique thrust ramps that form a signifi cant The Confusion Range in west-central Utah The Confusion Range is a collection of ridges complicating factor in the structure of the fold- has been considered a broad structural trough and small ranges that together form a low moun- thrust system. Together, these fi ve cross sections or synclinorium with little overall shorten- tain range in western Utah, between the more total almost 300 km in map length. Enlarged ing. However, new structural studies indicate imposing Snake Range on the west and House versions of the cross sections at a scale of that the Confusion Range is more accurately Range on the east (Figs. 1 and 2). The range is 1:50,000, along with a discussion of the petro- characterized as an east-vergent, fold-thrust named for its “rugged isolation and confusing leum potential of the region, may be found in system with ~10 km of horizontal shortening topography” (Van Cott, 1990). The Confusion Greene and Herring (2013). during Late Jurassic to Eocene Cordilleran Range exposes ~5000 m of Ordovician through Similar structural style and fold-thrust struc- contractional deformation. For this study, Triassic strata in what has been considered a tures are continuous southward throughout the four balanced and retrodeformable cross broad structural trough or synclinorium (e.g., length of the originally proposed synclinorium, sections across the Confusion Range and Hose, 1977; Anderson, 1983; Hintze and Davis, forming a fold-thrust belt more than 130 km in adjacent Tule Valley were constructed using 2003; Rowley et al., 2009).
    [Show full text]
  • Water Resources Development by the U.S. Army Corps of Engineers in Utah
    DEVELOPMENT W&M U.S. ARMY CORPS OF ENGINEERS TC SOU TH PACIFIC DIVI SI O N 423 • A15 1977 Utah 1977 M ■ - z//>A ;^7 /WATER RESOURCES DEVELOPMENT ec by THE U.S. ARMY CORPS OF ENGINEERS in UTAH JANUARY 1977 ADDRESS INQUIRIES TO DIVISION ENGINEER U.S. Army Engineer Division South Pacific Corps of Engineers 630 Sansome Street San Fransisco, California 94111 DISTRICT ENGINEER DISTRICT ENGINEER U.S. Army Engineer District U.S. Army Engineer District Los Angeles Corps of Engineers Sacramento Federal Building Corps of Engineers 300 North Los Angeles Street Federal and Courts Building Los Angeles, California 90012 (P.O. Box 2711 650 Capitol Mall Los Angeles, California 90053) Sacramento, California 95814 TO OUR READERS: Throughout history, water has played a dominant role in shaping the destinies of nations and entire civilizations. The early settlement and development of our country occurred along our coasts and water courses. The management of our land and water resources was the catalyst which enabled us to progress from a basically rural and agrarian economy to the urban and industrialized nation we are today. Since the General Survey Act of 1824, the US Army Corps of Engineers has played a vital role in the development and management of our national water resources. At the direction of Presidents and with Congressional authorization and funding, the Corps of Engineers has planned and executed major national programs for navigation, flood control, water supply, hydroelectric power, recreation and water conservation which have been responsive to the changing needs and demands of the American people for 152 years.
    [Show full text]
  • THREE SACRED VALLEYS): an Assessment of Native American Cultural Resources Potentially Affected by Proposed U.S
    Paitu Nanasuagaindu Pahonupi (THREE SACRED VALLEYS): An Assessment of Native American Cultural Resources Potentially Affected by Proposed U.S. Air Force Electronic Combat Test Capability Actions and Alternatives at the Utah Test and Training Range Item Type Report Authors Stoffle, Richard W.; Halmo, David; Olmsted, John Publisher Institute for Social Research, University of Michigan Download date 01/10/2021 12:00:11 Link to Item http://hdl.handle.net/10150/271235 PAITU NANASUAGAINDU PAHONUPI(THREE SACRED VALLEYS): AN ASSESSMENT OF NATIVE AMERICAN CULTURAL RESOURCES POTENTIALLY AFFECTED BY PROPOSED U.S. AIR FORCE ELECTRONIC COMBAT TEST CAPABILITY ACTIONS AND ALTERNATIVES AT THE UTAH TEST AND TRAINING RANGE DRAFT INTERIM REPORT By Richard W. Stoffle David B. Halmo John E. Olmsted Institute for Social Research University of Michigan April 14, 1989 Submitted to: Science Applications International Corporation Las Vegas, Nevada TABLE OF CONTENTS CHAPTER ONE EXECUTIVE SUMMARY 1 Description of Study Area 2 Description of Project 2 Site Specific Assessment 3 Tactical Threat Area 3 Threat Sites and Array 4 Range Maintenance Facilities 4 Programmatic Assessment 5 Airspace and Flight Activities Effects 5 Gapfiller Radar Site 5 Future Programmatic Assessments 5 Commercial Power 5 Fiber -optic Communications Network 5 Project - Related Structures and Activities on DOD lands 5 CHAPTER TWO ETHNOHISTORY OF INVOLVED NATIVE AMERICAN GROUPS 7 Ethnic Groups and Territories 7 Overview 7 Gosiutes 9 Pahvants 12 Utes 13 Early Contact, Euroamerican Colonization,
    [Show full text]
  • North American Deserts Chihuahuan - Great Basin Desert - Sonoran – Mojave
    North American Deserts Chihuahuan - Great Basin Desert - Sonoran – Mojave http://www.desertusa.com/desert.html In most modern classifications, the deserts of the United States and northern Mexico are grouped into four distinct categories. These distinctions are made on the basis of floristic composition and distribution -- the species of plants growing in a particular desert region. Plant communities, in turn, are determined by the geologic history of a region, the soil and mineral conditions, the elevation and the patterns of precipitation. Three of these deserts -- the Chihuahuan, the Sonoran and the Mojave -- are called "hot deserts," because of their high temperatures during the long summer and because the evolutionary affinities of their plant life are largely with the subtropical plant communities to the south. The Great Basin Desert is called a "cold desert" because it is generally cooler and its dominant plant life is not subtropical in origin. Chihuahuan Desert: A small area of southeastern New Mexico and extreme western Texas, extending south into a vast area of Mexico. Great Basin Desert: The northern three-quarters of Nevada, western and southern Utah, to the southern third of Idaho and the southeastern corner of Oregon. According to some, it also includes small portions of western Colorado and southwestern Wyoming. Bordered on the south by the Mojave and Sonoran Deserts. Mojave Desert: A portion of southern Nevada, extreme southwestern Utah and of eastern California, north of the Sonoran Desert. Sonoran Desert: A relatively small region of extreme south-central California and most of the southern half of Arizona, east to almost the New Mexico line.
    [Show full text]
  • Controls on Geothermal Activity in the Sevier Thermal Belt, Southwestern
    PROCEEDINGS, 44th Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 11-13, 2019 SGP-TR-214 Controls of Geothermal Resources and Hydrothermal Activity in the Sevier Thermal Belt Based on Fluid Geochemistry Stuart F. Simmons1,2, Stefan Kirby3, Rick Allis3, Phil Wannamaker1 and Joe Moore1 1EGI, University of Utah, 423 Wakara Way, suite 300, Salt Lake City, UT 2Department of Chemical Engineering, University of Utah, 50 S. Central Campus Dr., Salt Lake City, UT 84112 3Utah Geological Survey, 1594 W. North Temple St., Salt Lake City, UT 84114 [email protected] Keywords: Sevier Thermal Belt, hydrothermal systems, heat flow, geochemistry, helium isotopes, stable isotopes. ABSTRACT The Sevier Thermal Belt, southwestern Utah, covers 20,000 km2, and it is located along the eastern edge of the Basin and Range, extending east into the transition zone of the Colorado Plateau. The belt encompasses the geothermal production fields at Cove Fort, Roosevelt Hot Springs, and Thermo, scattered hot spring activity, and the Covenant & Providence hydrocarbon fields. Regionally, it is characterized by elevated heat flow, modest seismicity, and Quaternary basalt-rhyolite magmatism. There are at least five large discrete domains (50 to >500 km2) with anomalous heat flow, including ones associated with Roosevelt Hot Springs, Cove Fort, Thermo and the Black Rock desert. Helium isotope data indicate connections to the upper mantle are developed over the region of strongest and most concentrated hydrothermal activity. By contrast, stable isotope data demonstrate that most of the convective heat transfer is associated with shallow to deep circulation of local meteoric water. Quartz-silica geothermometry suggests that convective heat transfer is compartmentalized by stratigraphic horizons and sub-vertical faults.
    [Show full text]
  • A Preliminary Bibliography and Lake Index of the Inland Mineral Waters of the World
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Nebraska Game and Parks Commission -- Staff Research Publications Nebraska Game and Parks Commission September 1972 A PRELIMINARY BIBLIOGRAPHY AND LAKE INDEX OF THE INLAND MINERAL WATERS OF THE WORLD D. B. McCarraher Hastings College, Hastings, Nebraska Follow this and additional works at: https://digitalcommons.unl.edu/nebgamestaff Part of the Environmental Sciences Commons McCarraher, D. B., "A PRELIMINARY BIBLIOGRAPHY AND LAKE INDEX OF THE INLAND MINERAL WATERS OF THE WORLD" (1972). Nebraska Game and Parks Commission -- Staff Research Publications. 4. https://digitalcommons.unl.edu/nebgamestaff/4 This Article is brought to you for free and open access by the Nebraska Game and Parks Commission at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Nebraska Game and Parks Commission -- Staff Research Publications by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. FAO Fisheries Circular No. 146 FIRI/C146 (Distribution restricted) A PRELIMINARY BIBLIOGRAPHY AND LAKE INDEX OF THE INLAND MINERAL WATERS OF THE riORLD Prepared by D.B. ~lcCarraher Office of Limnology Hastings College Hastings, Nebraska, 68901 U.S.A. FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, September 1972 Preparation of this Dooument This pre1iminar,y- bibliography and lake index has been prepared by the author on the basis of information available in the Office of Linmolog,y, Hastings College, Nebraska. Although all source material available there has been searched, it is reoognized that IIla1\Y papers, especially those published in regional languages lIlaiY have been left out. Readers are requested to point out such omissions and arv inaocuraoies that require oorreotion.
    [Show full text]
  • Sevier Playa Potash Project Draft Environmental Impact Statement Appendix C References 1.0 Introduction
    Sevier Playa Potash Project Draft Environmental Impact Statement Appendix C References November 2018 THIS PAGE INTENTIONALLY LEFT BLANK Sevier Playa Potash Project Draft Environmental Impact Statement Appendix C References 1.0 Introduction This appendix lists the references used in the EIS. 2.0 References Avian Power Line Interaction Committee. 2012. Reducing Avian Collisions with Power Lines: The State of the Art in 2012. Edison Electric Institute and APLIC. Washington, D.C. Avian Power Line Interaction Committee. 2006. Suggested Practices for Avian Protection on Power Lines: The State of the Art in 2006. Edison Electric Institute, APLIC, and the California Energy Commission. Washington, D.C. and Sacramento, California. CH2M. 2018. Sevier Playa Potash Project. Supplemental Visual Resources Analysis Memo. Prepared for Crystal Peak Minerals. April 11, 2018. CH2M. 2017a. Sevier Playa Potash Project Feasibility Study – Water Balance Model Report. Prepared for Crystal Peak Minerals, Inc. August 2017. CH2M. 2017b. Final Visual Resources Report for the Sevier Playa Potash Project. Prepared for Crystal Peak Minerals, Inc. March 2017. CH2M. 2017c. Sevier Playa Potash Project Feasibility Study – Evaluation of Sevier River Transmission Losses and Discharge. Prepared for Crystal Peak Minerals, Inc. July 2017. CH2M HILL. 2015a. Bat Activity in the Vicinity of the Sevier Playa Potash Project. Prepared for Peak Minerals Inc., Salt Lake City, Utah. August 2015. CH2M HILL. 2015b. Sevier Playa Potash Project Kit Fox Camera Survey Report. Prepared for Peak Minerals Inc., Salt Lake City, Utah. August 2015. CH2M HILL. 2014. General and Special-status Wildlife and Plant Species Survey Report for the Sevier Playa Project. Prepared for Peak Minerals Inc., Salt Lake City, Utah.
    [Show full text]
  • Geology of the Northern Portion of the Fish Lake Plateau, Utah
    GEOLOGY OF THE NORTHERN PORTION OF THE FISH LAKE PLATEAU, UTAH DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State - University By DONALD PAUL MCGOOKEY, B.S., M.A* The Ohio State University 1958 Approved by Edmund M." Spieker Adviser Department of Geology CONTENTS Page INTRODUCTION. ................................ 1 Locations and accessibility ........ 2 Physical features ......... _ ................... 5 Previous w o r k ......... 10 Field work and the geologic map ........ 12 Acknowledgements.................... 13 STRATIGRAPHY........................................ 15 General features................................ 15 Jurassic system......................... 16 Arapien shale .............................. 16 Twist Gulch formation...................... 13 Morrison (?) formation...................... 19 Cretaceous system .............................. 20 General character and distribution.......... 20 Indianola group ............................ 21 Mancos shale. ................... 24 Star Point sandstone................ 25 Blackhawk formation ........................ 26 Definition, lithology, and extent .... 26 Stratigraphic relations . ............ 23 Age . .............................. 23 Price River formation...................... 31 Definition, lithology, and extent .... 31 Stratigraphic relations ................ 34 A g e .................................... 37 Cretaceous and Tertiary systems . ............ 37 North Horn formation. ..........
    [Show full text]
  • Miocene Unroofing of the Canyon Range During Extension Along the Sevier Desert Detachment, West Central Utah
    TECTONICS, VOL. 20, NO. 3, PAGES 289-307, JUNE 2001 Miocene unroofing of the Canyon Range during extension along the Sevier Desert Detachment, west central Utah Daniel F. Stockli • Departmentof Geologicaland EnvironmentalSciences, Stanford University, Stanford, California JonathanK. Linn:, J.Douglas Walker Departmentof Geology, Universityof Kansas,Lawrence, Kansas Trevor A. Dumitru Departmentof Geologicaland Environmental Scmnces, Stanford University, Stanford, California Abstract. Apatite fission track resultsfrom Neoproterozoic 1. Introduction and Lower Cambrian quartzites collected from the Canyon Rangein west centralUtah reveal a significantearly to middle The Canyon Range in west central Utah lies within the Miocene cooling event (-19-15 Ma). Preextensional Mesozoic Sevier orogenic belt of Armstrong [1968] at the temperaturesestimated from multicompositionalapatite easternmargin of the Basin and Range extensionalprovince fissiontrack data suggest-4.5 to >5.6 km of unroofingduring (Figure 1). The geology of the Canyon Range and the the early to middle Miocene, assuminga geothermalgradient adjacentSevier Desert region has become the focusof intense of-25øC/km. The spatialdistribution of thesepreextensional scientificdebate concerning the regional tectonicevolution of temperaturesindicates -15ø-20ø of eastward tilting of the the easternGreat Basin and especiallythe mechanicaland Canyon Range during rapid extensionalunroofing along a kinematic viability of low-angle detachment faulting in moderately west dipping detachmentfault (-35ø-40ø).
    [Show full text]
  • Episodic Dust Events of Utah's Wasatch
    1654 JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY VOLUME 51 Episodic Dust Events of Utah’s Wasatch Front and Adjoining Region W. JAMES STEENBURGH AND JEFFREY D. MASSEY Department of Atmospheric Sciences, University of Utah, Salt Lake City, Utah THOMAS H. PAINTER Jet Propulsion Laboratory, Pasadena, California (Manuscript received 4 January 2012, in final form 4 April 2012) ABSTRACT Episodic dust events cause hazardous air quality along Utah’s Wasatch Front and dust loading of the snowpack in the adjacent Wasatch Mountains. This paper presents a climatology of episodic dust events of the Wasatch Front and adjoining region that is based on surface weather observations from the Salt Lake City International Airport (KSLC), Geostationary Operational Environmental Satellite (GOES) imag- ery, and additional meteorological datasets. Dust events at KSLC—defined as any day [mountain standard time (MST)] with at least one report of a dust storm, blowing dust, and/or dust in suspension with a visi- bility of 10 km or less—average 4.3 per water year (WY: October–September), with considerable in- terannual variability and a general decline in frequency during the 1930–2010 observational record. The distributions of monthly dust-event frequency and total dust flux are bimodal, with primary and secondary maxima in April and September, respectively. Dust reports are most common in the late afternoon and evening. An analysis of the 33 most recent (2001–10 WY) events at KSLC indicates that 11 were associated with airmass convection, 16 were associated with a cold front or baroclinic trough entering Utah from the west or northwest, 4 were associated with a stationaryorslowlymovingfrontorbaroclinictroughwestof Utah, and 2 were associated with other synoptic patterns.
    [Show full text]
  • DROUGHT HALTS LAKE RISE Ancient Fossil Find Legislature Acts
    PUBLISHED QUARTERLY BY UTAH GEOLOGICAL AND MINERAL SURVEY NOTE$ Service to the State of Utah May 1977 DROUGHT HALTS Geological Matters ... LAKE RISE Legislature Acts On Earthquake Hazards Great Salt Lake levels recorded (in Utah's 42nd Legislature adjourned and legislation for earthquake hazard feet above sea level) this winter and March 16 after 60 busy days considering reduction. A supplemental appropriation spring by the U. S. Geological Survey are: dozens of bills and resolutions related to of $80,000 was provided for the new Boat harbor Saline natural resources and passing a few of organization, which will be housed in the Date (south arm) (north arm) significance to the Utah Geological and USGS building for the present. Mineral Survey. February I 4,200.50 4,199.10 Febru ary 15 4,200.60 4,199.20 House Bill No. 47, introduced by Three bills that came to be known March 1 4,200.65 4,199.25 Representatives Nielsen and Atwood and as the earthquake hazard reduction March 15 4,200.75 4,199.25 Dewain C. Washburn (Monroe) and April l 4,200.75 4,199.30 package were enacted into law. The most Edison J. Stephens (Henefer), removes an April 15 4,200.75 4,199.30 important of these to UGMS was House exemption in effect at present and gives Bill No. 48, sponsored by Representative the Division of Water Rights (State The level of the south arm stood Genevieve Atwood (Salt Lake City) and Engineer) approval and inspection powers ' . l O feet lower on April 15, 1977, than Ray Nielsen (Fairview), which added to over dams built and operated by the U.S .
    [Show full text]