Link to USGS home page

Preliminary Analysis Of Cores From North San Francisco Bay, California

Home
Introduction
Methods
Preliminary Results
Data
Downloads

GCC-1 Analyses

Field Descriptions of GCC-1
Core ID Length (m) Latitude Longitude Setting Description
GCC1 2.08 38� 05' 21.252 122� 04' 10.968 Suisun Channel Free-fall, mud on core catcher.  Top 72 cm sandier (fine sand), 72-208 has more mud.  Gray-green mud (some brown in mud), possibly sand or silt.

X-radiograph (0-220 cm)

Click on the above link to view x-ray scans for GCC-1.

Magnetic Susceptibility and X-ray Descriptions

Combined graph showing a peak in values to about 300 at a depth of 10 cm. For the next 70 cm the magnetic values decrease to about 130, and then peak again with a value of 200 at 80 cm down. The bottom 130 cm has an approximate value of 130.

Click image for a larger version (68 kb JPEG)

 

TOP OF PAGE

 

CMG Reports CMG Home CMG Search

http://geopubs.wr.usgs.gov/open-file/of03-111/Analyses/GCC1/GCC1.html
maintained by Carolyn Donlin
last modified 19 February 2003 (lzt)