What is it about?
This USGS Open-File Report documents procedures for geologic logging (description) of core samples and provides extensive geologic logs of Pleistocene deposits below the Sacramento-San Joaquin Delta, California. The described cores were collected from geotechnical boreholes by the California Department of Water Resources.
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Why is it important?
The Sacramento-San Joaquin Delta is a critical confluence of California’s freshwater resources, people, ecosystems, and potential geohazards (such as earthquakes). We provide geologic core descriptions as a basis for future geologic interpretations, including seismic hazard assessment.
Perspectives
I described cores with USGS and the California Department of Water Resources as part of my Mendenhall Postdoctoral Fellowship with the USGS Earthquake Science Center in Menlo Park, California. I hope that making these logs publically available in an OFR facilitates their be used in a broad array of future studies in the Delta. Also, check out the sister publication in Quaternary Research: https://goo.gl/w4XVzX
Katherine L Maier
Read the Original
This page is a summary of: Geologic logs of geotechnical cores from the subsurface Sacramento-San Joaquin Delta, California, July 2014, US Geological Survey,
DOI: 10.3133/ofr20141127.
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