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Preliminary Analysis Of Cores From North San Francisco Bay, California

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GCC-3B Analyses

Field Descriptions of GCC-3B
Core ID Length (m) Latitude Longitude Setting Description
GCC3B 2.69 38� 05' 47.146 122� 03' 23.937 Suisun Channel East Free-fall to get more penetration, wood fragments in core catcher.  Top 10 cm is a silty layer, large shells ~20 cm below surface, shells throughout bottom sections.

X-radiograph (0-290 cm)

Click on the above link to view x-ray scans for GCC-3B.

Magnetic Susceptibility and X-ray Descriptions

Combined graph showing magnetic values ranging from 5 to 30, increasing towards the bottom of the core. A spike in magnetics occurs at 10 cm to a value of 50.

Click image for a larger version (65 kb JPEG)

 

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http://geopubs.wr.usgs.gov/open-file/of03-111/Analyses/GCC3B/GCC3B.html
maintained by Carolyn Donlin
last modified 19 February 2003 (lzt)