1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System
  3. Dataset 43585

Dataset description: 10 cm intervals of percent sand content for 186 sediment cores collected in San Francisco Bay, CA, 1990-2016

Percentage of sand content provided in 10 cm intervals down the length of 186 sediment cores collected in San Francisco Bay, California in 1990-91, 2000, 2006, and 2016. Sediment data were obtained from a combination of gravity, box, and push cores ranging in length from 14 to 360 cm. Sand content percentages were obtained from a compilation of visual analyses, descriptive and graphical core logs, and grain size measurements. For the purposes of modeling variability in sand content with depth beneath the San Francisco Bay floor, percent sand content values were converted from variable layer thicknesses based upon natural breaks within the core, to regularly spaced 10-cm intervals using a weighted average.
Keywordssediment transport, sedimentation, suspended material (water), dredging, estuarine processes, box coring, gravity coring, stratigraphic thickness, drilling and coring, mining and quarrying, bathymetry, ocean processes, ocean sciences
Data typesGeology
Formatcomma-delimited text;
Amount44.6 KB

Contacts

Contact
Theresa Fregoso
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Location of materials and files

Public files
Metadatahttps://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9Y7W1ZM/SanFranciscoBayPerSand10cmCores_metadata.xml
Outline - Questions and answers - Text - XML

Activities and equipment

ActivityEquipment
J190SFcore
corer
J191SFgravitycore
corer
J200SFgravitycore
corer
J200SFboxcore
box core and susampler
2016-671-FAvibracore