A5087793471- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Geological Studies and Exploration
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- High-pressure geophysics and materials
- Seismology and Earthquake Studies
- Geological and Geophysical Studies
- Seismic Waves and Analysis
- Geomagnetism and Paleomagnetism Studies
- Geochemistry and Elemental Analysis
- Marine and environmental studies
- Geological and Tectonic Studies in Latin America
- Earthquake Detection and Analysis
- Archaeology and Natural History
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies Worldwide
- Geological Modeling and Analysis
- Botany and Geology in Latin America and Caribbean
- Geological Formations and Processes Exploration
- NMR spectroscopy and applications
- Astro and Planetary Science
University of Nevada, Reno
2004-2023
Humboldt State University
2023
California State Polytechnic University
2023
University of California, Santa Barbara
2023
Nevada System of Higher Education
2017
The University of Texas at Austin
2016
Weber State University
1986
Bates College
1980
Research Article| May 01, 2004 Late Paleozoic tectonism in Nevada: Timing, kinematics, and tectonic significance James H. Trexler, Jr.; Jr. 1Department of Geological Sciences, University Nevada, Reno, Nevada 89557-0180, USA Search for other works by this author on: GSW Google Scholar Patricia Cashman; Cashman Walter S. Snyder; Snyder 2Department Geology Geophysics, Boise State University, 1910 Drive, Boise, Idaho 83725, Vladimir I. Davydov GSA Bulletin (2004) 116 (5-6): 525–538....
Research Article| May 19, 2017 The late Paleozoic Southwestern Laurentian Borderland Timothy F. Lawton; Lawton * 1Centro de Geociencias, Universidad Nacional Autónoma México, Juriquilla, 76230 Querétaro, Mexico *E-mail: tlawton@geociencias.unam.mx Search for other works by this author on: GSW Google Scholar Patricia H. Cashman; Cashman 2Department of Geological Sciences and Engineering, University Nevada–Reno, Reno, Nevada 89557-0172, USA James Trexler, Jr.; Jr. Wanda J. Taylor 3Department...
Detrital zircon U-Pb geochronology and Hf isotope geochemistry provide new insights into the provenance, sedimentary transport, tectonic evolution of Roberts Mountains allochthon strata north-central Nevada. Using laser-ablation inductively coupled plasma mass spectrometry, a total 1151 grains from six Ordovician to Devonian arenite samples were analyzed for ages; these, 228 further ratios. Five units sampled have similar age peaks ratios, while ages ratios lower Vinini Formation are...
Research Article| December 01, 1994 Fault interaction may generate multiple slip vectors on a single fault surface Patricia H. Cashman; Cashman 1Department of Geological Sciences, University Nevada, Reno, Nevada 89557-1038 Search for other works by this author on: GSW Google Scholar Michael A. Ellis 2Center Earthquake and Information, Memphis, Tennessee 38152 Author Article Information Publisher: Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (1994)...
Research Article| February 01, 1989 Thermal models of thrust faulting: Constraints from fluid-inclusion observations, Willard sheet, Idaho-Utah-Wyoming belt W. A. YONKEE; YONKEE 1Department Geology and Geophysics, University Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar T. PARRY; PARRY R. L. BRUHN; BRUHN P. H. CASHMAN 2Department Geology, Mackay School Mines, Nevada-Reno, Reno, Nevada 89557 Author Article Information Publisher: Geological...
Abstract Uranium‐lead (U‐Pb) geochronology and Hafnium (Hf) isotope geochemistry of detrital zircons the Harmony Formation north central Nevada provide new insights into tectonic evolution Late Paleozoic western Laurentian margin. Using laser‐ablation inductively coupled plasma mass spectrometry, 10 arenite samples were analyzed for U‐Pb ages, 8 these further Hf ratios. Three sampled units have similar age peaks ratios, including a 1.0–1.4 Ga peak with ε values +12 to −3 2.5–2.7 +7 −5. The...
U-Pb detrital zircon geochronology provides insight into the provenance of upper Neoproterozoic–lower Cambrian Osgood Mountain Quartzite and Cambrian–lower Ordovician Preble Formation in Mountains northern Nevada (USA). We analyzed 535 grains from six samples quartz arenite by laser ablation–multicollector–inductively coupled plasma–mass spectrometry. The age data these Paleozoic passive margin units record a change within Quartzite. Comparison with work others reveals that this occurred...
Abstract Mississippian rocks of the Antler foreland basin in Nevada (western United States) record its evolution detail, clarifying timing and tectonic significance orogeny. Synorogenic clastic sediments mark initiation tectonism; they arrived from north or northwest late Early (Osagean). An orogenic highland formed northern Middle (Meramecian), producing a regional angular unconformity terminating deposition basin. Unconformably overlying Upper (Chesterian) provide tight age control for...
Research Article| March 01, 2011 Late Paleozoic contractional and extensional deformation at Edna Mountain, Nevada Patricia H. Cashman; Cashman † 1Department of Geological Sciences Engineering, University Nevada, Reno, 89557, USA †E-mail: pcashman@unr.edu Search for other works by this author on: GSW Google Scholar Danielle E. Villa; Villa Wanda J. Taylor; Taylor 2Department Geoscience, Las Vegas, 89154, Vladimir I. Davydov; Davydov 3Department Geosciences, Boise State University, Boise,...
Abstract During Pennsylvanian to Early Permian time, much of southwestern Laurentia experienced broad deformation far from the nearest plate boundaries. The bulk this is known as Ancestral Rocky Mountains orogeny, which consists several basement uplifts and proximal basins north northwest Ouachita‐Marathon suture. Ely‐Bird Spring basin formed during located between classic complex poorly constrained western Laurentian margin. In study, we used tectonic subsidence curve analyses evaluate...
Research Article| October 01, 2003 Widespread effects of middle Mississippian deformation in the Great Basin western North America James H. Trexler, Jr.; Jr. 1Department Geological Sciences, University Nevada, Reno, 1664 Virginia Street, NV 89557-0042, USA Search for other works by this author on: GSW Google Scholar Patricia Cashman; Cashman C. Cole; Cole 2U.S. Survey, Denver Federal Center, Denver, CO 80225, Walter S. Snyder; Snyder 3Department Geology and Geophysics, Boise State...
Research Article| September 01, 1998 Paleoseismology of an active reverse fault in a forearc setting: The Poukawa zone, Hikurangi forearc, New Zealand Harvey M. Kelsey; Kelsey 1Department Geology, Humboldt State University, Arcata, California 95521 Search for other works by this author on: GSW Google Scholar Alan G. Hull; Hull 2Institute Geological and Nuclear Sciences, P.O. Box 30368, Lower Hutt, Susan Cashman; Cashman Kelvin R. Berryman; Berryman Patricia H. 3Department Mackay School...
Research Article| November 07, 2017 Determination of 3D Basin Shear‐Wave Velocity Structure Using Ambient Noise in an Urban Environment: A Case Study from Reno, Nevada Aasha Pancha; Pancha aSchool Geography, Environment and Earth Sciences, Victoria University Wellington, PO Box 600, New Zealand, Aasha.Pancha@vuw.ac.nzeNow at Aurecon Zealand Ltd, Spark Central, Level 8, 42‐52 Willis Street, Wellington 6011. Search for other works by this author on: GSW Google Scholar Satish Pullammanappallil;...
Paleozoic strata on the Nevada Test Site and surrounding area are affected by intersection of several important geologic trends, including early rift margin Late Devonian-Early Mississippian Antler orogenic foredeep. Upper lithologically diverse include siliciclastic sediments (carbonaceous shale, clean quartzose sands, bedded chert, chert-lithic conglomerate sand) various carbonates. These interpreted to have been deposited in a range environments water depths. The resulting complex...
A coarse conglomerate, known as "the Gravel of Reno," fills a deep channel incised into 2.6 Ma sedimentary section few km west Reno, Nevada. The canyon and its conglomerate fill record an abrupt shift in both provenance paleocurrent direction compared with the underlying lake-marginal Neogene strata. Notably, intermediate volcanic is supplemented overlying by large plutonic clasts derived from Sierran batholith. syntectonic Reno signals initiation Pleistocene faulting along eastern edge...
Neogene (Miocene–Pliocene) sedimentary rocks of the northeastern Sierra Nevada were deposited in small basins that formed response to volcanic and tectonic activity along eastern margin Sierra. These strata record an early phase (ca. 11–10 Ma) extension rapid sedimentation boulder conglomerates debrites on alluvial fans, followed by fluvio-lacustrine nearby arc but quiescence, until ∼ 2.6 Ma. The fossil these documents a warmer, wetter climate featuring large mammals lacking Sierran...
This report contains a synthesis and interpretation of structural stratigraphic data for pre-Tertiary rocks in large area southern Nevada within near the Test Site. Its presents descriptive interpretive information from discontinuously exposed localities context regional model that integrates stratigraphy, sedimentology, crustal structure, deformational style timing. Evidence is given substantial strike-slip faults, modest excursion on low-angle pre-Oligocene formation oroclinal flexure...
Research Article| March 01, 1980 Geologic cross section of the central Klamath Mountains, California: Summary GREGORY A. DAVIS; DAVIS 1Department Geological Sciences, University Southern California, Los Angeles, California 90007 Search for other works by this author on: GSW Google Scholar CLIFFORD J. ANDO; ANDO 2Department Cornell University, Ithaca, New York 14853 PATRICIA H. CASHMAN; CASHMAN 3Department Geology, Bates College, Lewiston, Maine 04240 LEE GOULLAUD 4Department Washington,...
A thick succession of Mississippian mud rocks in the eastern Great Basin has historically been identified as Chainman Shale and interpreted a foreland basin deposit associated with Antler orogeny. Our work shows that this section is two distinct mud-rock units separated by Late unconformity. The Gap Wash Formation rock below unconformity, restricted to above Poor exposure, sparse age control, limited lithologic contrast have hampered identification correlation units. New research identifies...