SDSU Geological Sciences Webinar - Shawn Wright

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TIR spectroscopy of shocked Deccan basalt: Implications for Mars and Martian meteorites: Shawn Wright, Institute of Meteoritics, Department of Earth and Planetary Sciences, University of New Mexico - Hundreds of thousands of impact craters dominate the surfaces of the Moon, Mercury, and Mars. There exists much geomorphic and spectral evidence for basalt on those surfaces, so basaltic target rocks are most likely common. However, little work has been done on the thermal infrared (TIR)...

SDSU Geological Sciences Webinar - Elizabeth Cochran

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Imaging Fault Damage Zones with Seismic and Geodetic Data - Elizabeth Cochran, Department of Earth Sciences, University of California, Riverside: During earthquakes slip is often localized on preexisting faults, but it is not well understood how the structure of crustal faults may contribute to slip localization and energetics. Growing evidence suggests that the crust along active faults suffers anomalous strain and damage during large quakes. Data collected along several faults including...

SDSU Geological Sciences Webinar - Brandon Browne

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Not-So-Simple Cinder Cone Plumbing Systems: Examples From the Sierra Nevada - Brandon Browne, Department of Geological Sciences, California State University Fullerton: Cinder cones situated in continental monogenetic volcanic fields are generally thought to erupt single magma batches over short periods of time. However, field mapping efforts combined with petrologic, geochemical, and thermobarometric analysis of erupted products from two unrelated volcanic fields in California (Red Cones, 5...

SDSU Geological Sciences Webinar - David King

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The Cretaceous-Paleogene ("KT") Boundary In Belize and Alabama - David T. King, Jr., Department of Geology and Geography, Auburn University, Alabama: Belize - At Albion Island in northern Belize, Cretaceous-Paleogene (KT) boundary deposits, also known as the Albion formation, rest upon karsted and fractured Maastrichtian dolostones. These deposits consist of a basal impactoclastic clay layer (~ 1 to 2-m thick) and an upper carbonate-rich, coarse impactoclastic breccia layer (up to 15-m...

SDSU Geological Sciences Webinar - Greg Hirth

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Understanding earthquakes at the microscopic scale: Greg Hirth, Geology & Gephysics, Woods Hole Oceanographic Institution - I will first review of how to relate rock strength determined from lab experiments to geological and geophysical observations - emphasizing apparent paradoxes and successes. I will then introduce why understanding earthquake mechanisms in the oceanic lithosphere can provide new insights into the rheological properties of fault zones, and present an experimental...

SDSU Geological Sciences - Thesis - Andrew Gritz

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Effect of Heterogeneous Prestress on Near-Field Rupture Directivity Andrew Gritz M.S. Candidate Department of Geological Sciences San Diego State University Advisor Steven Day To supplement the very limited number of strong motion recordings in areas near to earthquake sources, numerical modeling of the rupture process and radiated seismic energy was carried out to study such ground motion. The near fault region is susceptible to very strong shaking both because of proximity to the...

SDSU Geological Sciences - Thesis - Matt Burgess

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Characterizing an Artificial-Recharge Site in a Desert Environment Using Time-Domain Electromagnetics - Matt Burgess; M.S. Candidate, Advisors Dr. George Jiracek, Dr. Paul Bedrosian (USGS): Time-domain electromagnetics (TEM) were applied to characterize the subsurface in the vicinity of a proposed artificial hydraulic recharge site. Because of the investment involved, it is important to know the possible barrier effect of a major fault situated near the proposed recharge site. In this...

SDSU Geological Sciences - Thesis - Afton Van Zandt

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Southern Coyote Creek Fault to Superstition Hills Fault: New Insight to the San Jacinto Fault System - Afton Van Zandt; M.S. Candidate, Advisors Dr.Rob Mellors , Dr. Thomas K. Rockwell, and Dr. Douglas A. Stow: The Superstition Hills fault (SHF) is an active fault in the San Jacinto fault zone that also creeps aseismically. 58 interferograms from ERS-1 and ERS-2 satellite data (descending, track 356, frame 2943) spanning a time period from 1992 to 2000 were analyzed to measure surface...

SDSU Geological Sciences - Thesis - Rumi Takedatsu

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Study of crustal structure in the Caucasus and Caspian regions using receiver functions - Rumi Takedatsu; B.S. Candidate- Advisor Dr.Rob Mellors: The Eurasia-Arabia collision has created complex tectonics and structure in the Caucasus and Caspian region. In particular, Caspian Basin has a very different lithospheric structure from the surrounding region and the origin of the basin and nearby structures, such as the Kura Depression, are not well understood. This study will map the main...

SDSU Geological Sciences - Thesis - Tiffany Schillereff

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Potential Controls Affecting Gastropod Biomass in the the High Intertidal Zones at Neighboring Locations - Tiffany Schillereff; B.S. Candidate, Advisor Dr.Stephen Schellenberg: San Diego California’s coastlines include rocky intertidal zones that contain an abundance of the Class Gastropoda. What are the potential controls on gastropod abundance and size? Do wave energy, anthropogenic impact, substrate lithology and predation play a role? The locations in this study were Bathtub Rock...