United States Geological Survey, Coastal and Marine Geology (CMG), Rober, 200512, Locations and Descriptions of Gravity, Box, and Push Cores Collected In San Francisco Bay Between January and February, 1990 and 1991.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.01. Longitudes are given to the nearest 0.01. Latitude and longitude values are specified in Degrees and decimal minutes.
The authors wish to thank those individuals who aided in obtaining the numerous samples or in the processing of the cores and maps. Thanks to Gordon Smith, boat driver, who got us into places we shouldn't have been. Also Greg Gable, Bill Webber, John Chin, Tom Reiss, Nathaniel Plank, Bruce Jaffe, Tom Clifton, Tom Lorenson were involved with the core collection at various times through the project. Armando Burciaga, a Minority Participation in Earth Sciences (MPES) student from UCLA who worked diligently on the cores, conducted a portion of the X-radiography and core description. Dave Britton, a summer volunteer helped with the core descriptions. The preliminary map illustration was done by Kristin Brown. The Marine Technician crew of Hal Williams, Ranson Rideout, and Kevin O'Toole aided in the preparation of the coring equipment. And thanks to the University of Mississippi Mineral Research Institute crew headed by Bob Woolsey, and Walter O'Niell, including Bob Sheldon and Brien Noakes for the use of their equipment and expertise in the push-coring part of the operation.
(650) 329-5212 (voice)
ranima@usgs.gov
The initial intent of this project was to focus on attaining sediment gravity cores in as many varying depositional environments within the San Francisco Bay and Delta as possible to establish a data base on the Holocene sedimentary history of San Francisco Bay.
United States Geological Survey, Coastal and Marine Geology (CMG), 200512, USGS Coastal and Marine Geology InfoBank.Online Links:
- <http://walrus.wr.usgs.gov/infobank/j/j190sf/html/j-1-90-sf.meta.html>
- <http://walrus.wr.usgs.gov/infobank/j/j290sf/html/j-2-90-sf.meta.html>
- <http://walrus.wr.usgs.gov/infobank/j/j191sf/html/j-1-91-sf.meta.html>
- <http://walrus.wr.usgs.gov/infobank/j/j291sf/html/j-2-91-sf.meta.html>
Core locations were obtained through either radar fixes both on land and navigation markers or through Mini-Ranger or Del Norte microwave antenna positions located onshore with distances being recorded onboard the vessel.
Depth measurements were obtained using a hull mounted 200 kHz Raytheon DE719 Fathometer.
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- Access_Constraints:
- Physical materials are under controlled on-site access.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
- Use_Constraints:
- Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
(650) 329-5212 (voice)
ranima@usgs.gov