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Preliminary Analysis Of Cores From North San Francisco Bay, California

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GC-2 and BC-2A Analyses


Field Descriptions of GC-2 and BC-2A
Core ID Length (m) Latitude Longitude Setting Description
BC2A 0.42 38� 03' 49.076 122� 21' 26.239 Middle Shoal Water depth 2.8m
GC2 3.1 38� 03' 48.571 122� 21' 25.725 Middle Shoal Complete penetration; green-gray mud on outside of barrel; CC sample plus 2 samples from top; Bottom section: contains lot of water, dark + lighter gray in color; minor black spots in upper part, partly coarser grained + black material in middle of section; remarkably cohesive mud; Top section: dark + lighter gray mud; air pocket in upper part of section.

 X-radiographs (0-310 cm)

Click on the above link to view X-ray scans for BC-2A and GC-2.


Magnetic Susceptibility and X-ray Descriptions

Combined graph showing higher magnetic values (about 40) in the upper 160 cm of core and lower values (about 20) in the following 120 cm of core.

Click image for a larger version (68 kb JPEG)

 

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http://geopubs.wr.usgs.gov/open-file/of03-111/Analyses/GC2/GC2.html
maintained by Carolyn Donlin
last modified 19 February 2003 (lzt)