T024
Geology and Geodynamics of the San Francisco Bay Area
Session ID#: 83556
Session Description:
In the San Francisco Bay Area, plate boundary deformation accommodated along the San Andreas Fault System, comprising multiple active faults, and surface processes such as landslides, fluvial erosion, and deposition work together to shape the multifaceted landscape. The geometry and properties of the active San Andreas Fault System, as well as the landslide and erosion patterns in the region, are strongly affected by the Mesozoic subduction history which formed the underlying bedrock and predecessors to the present-day fault system. This session addresses how the integrated geological history of the bedrock impacts the modern geodynamic and landscape processes. We invite studies that can the contribute to an interdisciplinary session addressing the interrelationships between the bedrock geologic history, active faults, hydrogeology, environmental geology, surface processes and engineering geology of the Bay Area and surrounding coastal California areas.
Index Terms:
4302 Geological [NATURAL HAZARDS]
8106 Continental margins: transform [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]
8175 Tectonics and landscape evolution [TECTONOPHYSICS]
Primary Convener: James D Kirkpatrick, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada
Conveners: Callan Bentley, Northern Virginia Community College Annandale, Geology, Annandale, VA, United States, Kimberly Blisniuk, University of California Berkeley, Berkeley, CA, United States; San Jose State University, Department of Geology, San Jose, CA, United States and Christie D Rowe, McGill University, Montreal, QC, Canada
Primary Liaison: James D Kirkpatrick, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada
Detrital Zircon Geochronology and Mudstone Geochemistry Evidence for Tectonic History of the San Gregorio-Hosgri Fault (504290)
Chayawan Jaikla, Stanford University, Stanford, CA, United States, Donald R. Lowe, Stanford Earth Sciences, Stanford, CA, United States and Manuel R Vejar, University of Notre Dame, Department of Civil & Environmental Engineering & Earth Sciences, Notre Dame, IN, United States
A new use for Coast Range ophiolite serpentinite, promoting creep in the San Andreas Fault system of northern and central California (510163)
Diane E Moore1, Robert J McLaughlin2, David A Lockner3 and Michael J Rymer2, (1)USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States, (2)USGS, Menlo Park, CA, United States, (3)USGS Earthquake Science Center, Menlo Park, CA, United States
Neotectonic significance of Franciscan Complex bedrock structure adjacent to the Maacama Fault Zone in the Ukiah-Hopland area, northern California (512378)
Robert J McLaughlin, USGS, Retired, Menlo Park, CA, United States, Richard G Stanley, USGS, Emeritus, Menlo Park, CA, United States, Benjamin L Melosh, U.S.G.S., Menlo Park, CA, United States and Victoria E Langenheim, U.S. Geological Survey, Menlo Park, CA, United States
Importance of deformation history in characterizing active faulting in the eastern Coast Ranges, northern San Francisco Bay Area, California (520772)
Benjamin Lee Melosh, U.S. Geological Survey, GMEG, Menlo Park, United States and Robert J McLaughlin, USGS, Menlo Park, CA, United States
Fault Behavior and Surface Deformation Linked to Shallow Mechanical Properties during the 2014 M6.0 South Napa Earthquake (Invited) (548277)
Johanna M Nevitt1, Benjamin A. Brooks1, David A Lockner1, Carolyn A Morrow1, Rufus Catchings1, Mark Goldman1, Diane E Moore1, Benjamin Lee Melosh2, Coyn Criley1, Todd L Ericksen1 and Craig L Glennie3, (1)U.S. Geological Survey, Earthquake Science Center, Menlo Park, CA, United States, (2)U.S. Geological Survey, GMEG, Menlo Park, United States, (3)University of Houston, Houston, TX, United States
The Coast Range Orogeny of California: transpression or oblique subduction? (592743)
Neta Bar, Yale University, New Haven, CT, United States, Mark T Brandon, Yale University, Geology and Geophysics, New Haven, CT, United States and Jeremy K Hourigan, UC Santa Cruz, Santa Cruz, CA, United States
Revitalizing the classic "Streetcar to Subduction" Field Guide to the San Francisco Bay Area via Google Earth (593317)
James D Kirkpatrick, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, Callan Bentley, Northern Virginia Community College Annandale, Geology, Annandale, VA, United States, Kimberly Blisniuk, University of California Berkeley, Berkeley, CA, United States, Christie D Rowe, McGill University, Montreal, QC, Canada and John Wakabayashi, California State University Fresno, Earth and Environmental Sciences, Fresno, CA, United States
Mineralogical clues to the origin of the serpentinite mélange on Ring Mountain (599735)
Matthew Stephen Tarling, McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada, Christie D Rowe, McGill University, Montreal, QC, Canada and James D Kirkpatrick, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada
10Be Dating of an Alluvial Fan Complex Reveals New Slip Rates on the Santa Cruz Mountains Section of the Northern San Andreas Fault, Sanborn County Park, Saratoga, CA (605482)
Katherine Anna Guns, University of Arizona, Department of Geosciences, Tucson, AZ, United States, Kimberly Blisniuk, San Jose State University, San Jose, CA, United States and Roland Burgmann, Univ California Berkeley, Seismological Laboratory, Berkeley, CA, United States
Thermal evolution of northern Salinia using apatite and zircon (U-Th)/He thermochronology (629608)
Theron Sowers1, Robin Hankins1, Sierra Rack1, David Shimabukuro2, Steven M Skinner3, John Wakabayashi4 and Robinson Cecil5, (1)California State University Sacramento, Geology, Sacramento, CA, United States, (2)California State University Sacramento, Geology Department, Sacramento, CA, United States, (3)California State University Sacramento, Sacramento, CA, United States, (4)California State University Fresno, Earth and Environmental Sciences, Fresno, CA, United States, (5)Cal State Univ Northridge, Northridge, CA, United States
Geodynamic Origins of Broad and Focused Deformation in the Central California Coast Ranges Illustrated by the Monterey and Big Sur Segments of the San Gregorio-Hosgri Fault (632445)
Jeremy K Hourigan, University of California Santa Cruz, Santa Cruz, CA, United States, Mark T Brandon, Yale University, Geology and Geophysics, New Haven, CT, United States and Neta Bar, Yale University, New Haven, CT, United States
