Locations and Descriptions of Gravity, Box, and Push Cores Collected In San Francisco Bay Between January and February, 1990 and 1991

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

United States Geological Survey (USGS), Coastal and Marine Geology (CMG), Roberto J. Anima, H. Edward Clifton, Carol Reiss and Florence L. Wong

Publication_Date: 200512

Title:

Locations and Descriptions of Gravity, Box, and Push Cores Collected In San Francisco Bay Between January and February, 1990 and 1991

Online_Linkage: <http://pubs.usgs.gov/of/2005/1453/>

Description:

Abstract:

A project to study San Francisco Bay sediments collected over 300 sediment gravity cores; six push cores, and 3 box cores in San Francisco Bay during the years 1990-91. The purpose of the sampling effort is to establish a database on the Holocene sediment history of the bay. The samples described and mapped are the first effort to catalog and present the data collected. Thus far the cores have been utilized in various cooperative studies with state colleges and universities, and other USGS divisions. These cores serve as a base for ongoing multidisciplinary studies. The sediment studies project has initiated subsequent coring efforts within the bay using refined coring techniques to attain deeper cores.

Purpose:

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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19900122

Ending_Date: 19910227

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.51767

East_Bounding_Coordinate: -121.61167

North_Bounding_Coordinate: 38.19150

South_Bounding_Coordinate: 37.45950

Keywords:

Theme:

Theme_Keyword_Thesaurus:

Global Change Master Directory (GCMD) <http://gcmd.gsfc.nasa.gov/Data/portals/gcmd/param_search/OCEANS.html>

Theme_Keyword: Marine Sediments

Theme_Keyword: Coastal Processes

Place:

Place_Keyword_Thesaurus:

Geographic Names Information System (GNIS) <http://geonames.usgs.gov/>

Place_Keyword: California

Place_Keyword: San Francisco Bay

Place_Keyword: Richardson Bay

Place_Keyword: San Pablo Bay

Place_Keyword: Suisun Bay

Place_Keyword: Carquinez Strait

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.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

United States Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Roberto J. Anima

Contact_Address:

Address_Type: mailing and physical

Address: USGS, MailStop 999, 345 Middlefield Road

City: Menlo Park

State_or_Province: CA

Postal_Code: 94025-3561

Contact_Voice_Telephone: (650) 329-5212

Contact_Electronic_Mail_Address: ranima@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: <http://pubs.usgs.gov/of/2005/1453/of1453browse.gif>

Browse_Graphic_File_Description: map of sample locations

Browse_Graphic_File_Type: GIF

Data_Set_Credit:

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.

Cross_Reference:

Citation_Information:

Originator:

United States Geological Survey (USGS), Coastal and Marine Geology (CMG)

Publication_Date: 200512

Title: USGS Coastal and Marine Geology InfoBank

Online_Linkage:

<http://walrus.wr.usgs.gov/infobank/j/j190sf/html/j-1-90-sf.meta.html>

Online_Linkage:

<http://walrus.wr.usgs.gov/infobank/j/j290sf/html/j-2-90-sf.meta.html>

Online_Linkage:

<http://walrus.wr.usgs.gov/infobank/j/j191sf/html/j-1-91-sf.meta.html>

Online_Linkage:

<http://walrus.wr.usgs.gov/infobank/j/j291sf/html/j-2-91-sf.meta.html>

Data_Quality_Information:

Logical_Consistency_Report: unspecified

Completeness_Report: unspecified

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

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.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Depth measurements were obtained using a hull mounted 200 kHz Raytheon DE719 Fathometer.

Lineage:

Process_Step:

Process_Description: See Open File Report 2005-1453, for full methods description.

Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.01

Longitude_Resolution: 0.01

Geographic_Coordinate_Units: Degrees and decimal minutes

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Local surface

Depth_Resolution: 0.01

Depth_Distance_Units: meters

Depth_Encoding_Method:

Explicit depth coordinate included with horizontal coordinates

Metadata_Reference_Information:

Metadata_Date: 200512

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

United States Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Roberto J. Anima

Contact_Address:

Address_Type: mailing and physical

Address: USGS, MailStop 999, 345 Middlefield Road

City: Menlo Park

State_or_Province: CA

Postal_Code: 94025-3561

Contact_Voice_Telephone: (650) 329-5212

Contact_Electronic_Mail_Address: ranima@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998