Whole Rock Geochemistry of the Peñasquitos Formation, San Diego County California Robert Donohue B.S. Candidate Department of Geological Sciences San Diego State University Advisors Dr. David Kimbrough -------------------------------------------------------------------------------- ABSTRACT The Late Jurassic Peñasquitos Formation is a newly recognized formation in San Diego County distinct from the Cretaceous Santiago Peak Volcanics. The Peñasquitos Formation consists of low...

Ocean acidification during the Paleocene-Eocene Thermal Maximum at Contessa Road, Italy: Insights from weight percent carbonate content Emily Allen B.S. Candidate Department of Geological Sciences San Diego State University Advisors Dr. Stephen Schellenberg -------------------------------------------------------------------------------- ABSTRACT The Paleocene-Eocene Thermal Maximum (PETM; ~55 Ma) is defined as a period of time during which thousands of petagrams of carbon were...

Physical and Chemical Properties of the Winterhaven Metavolcanic Member: Implications for Igneous Petrogenesis Jamie Purcell B.S. Candidate Department of Geological Sciences San Diego State University Advisor Dr. Gary Girty -------------------------------------------------------------------------------- ABSTRACT Lying in southeastern California between Indian Pass and Picacho State Recreation Area is the ~440 m thick, Jurassic Winterhaven Formation. This unit has been...

A comparison of the Toorongo weathering profile, south Australia, and weathered regolith at Santa Margarita Ecological Reserve: Comparing weathering intensity factors derived from non-central principal component analysis Jason Parizek B.S. Candidate Department of Geological Sciences San Diego State University Advisors Dr. Gary Girty -------------------------------------------------------------------------------- ABSTRACT Compositional data derived from Cretaceous granodiorite at...

Geometry and Morphology of Cracks in Saprock: Implications for Ground Shaking Taylor Carrasco B.S. Candidate Department of Geological Sciences San Diego State University Advisors Dr. Gary Girty -------------------------------------------------------------------------------- ABSTRACT Lying between the Elsinore and San Jacinto faults is a band of precariously balanced rocks first identified by J. Brune and colleagues. Peak accelerations during ground shaking events on the San...

Forearc Basin Analysis of the Late Jurassic-Early Cretaceous Eugenia Formation; New Mapping and Provenance Analysis in the Northern Vizcaino Penninsula, Baja California Sur Christopher Kohel M.S. Candidate Department of Geological Sciences San Diego State University The Late Jurassic-Early Cretaceous Eugenia Formation represents an enigmatic part of the Vizcaino Peninsula forearc stratigraphy. Eugenia sub-basins on the Vizcaino Peninsula are broadly correlative to the Jurassic forearc...

Paleoseismology of the Southern Clark Strand of the San Jacinto Fault Zone, Southern California Michael Buga M.S. Candidate Department of Geological Sciences San Diego State University Advisors Dr. Tom Rockwell We present results from a new paleoseismic trench site on the Clark strand of the San Jacinto Fault Zone in Clark Lake, western Salton Trough, southern California. The trench results suggest that most late Holocene slip along the Clark fault at Clark Lake is localized within a...

New Insights Into The Relationship Between Fault Segmentation And Earthquake Rupture: The North Anatolian Fault, Turkey Gulsen Ucarkus Post-doctoral Researcher Scripps Institution of Oceanography -------------------------------------------------------------------------------- Strike-slip faults are often segmented by step-overs resulting in a variety of deformation styles such as constraining bends, releasing bends and rotational deformation. These step-overs or discontinuities...

Geochemical assessment of mixing advanced treated wastewater and groundwater in the Harmony Grove Basin, Southern California Anthony Fisher ABSTRACT The Harmony Grove basin aquifer is located in San Diego California. This location is being sought after by the Rincon del Diablo Municipal Water District for storage of advanced treated wastewater (ATW). After storage, pumping of groundwater is proposed for potable reuse. The project consultant sampled and analyzed groundwater chemical...

Growth Dynamics in the Intertidal Barnacle Megabalanus: Development of a Subseasonal Paleoceanographic Archive Julio F. Morin ABSTRACT The arthropod Megabalanus coccopoma is indigenous to coastal Baja California, but migrated up to San Diego due to an El Nino event in the early 80s (Newman and McConnaughey 1987). Megabalanus dates back to the Miocene (Doyle et al. 2007) is a useful local indicator of exposure and submergence intervals due to their feeding habits which correlates to...