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Open-File Report 03-111

Preliminary Analysis Of Cores From North San Francisco Bay, California

By Dan Allison, Margaret Hampton, and Bruce Jaffe

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Photos of March 2000 Coring Operation

Click images for a larger version

Picture of USGS employees retrieving BC-1.

Photo 1:  Rich Smith, Walt Olsen, and
Ryan Leech helping with BC-1. (279 kb JPEG)

Close-up of BC-1 right after coring.

Photo 2:  Close-up of BC-1. (292 kb JPEG)

Preparing to cut GC-4C into sections.

Photo 3:  Preparing to cut GC-4C. (276 kb JPEG)

Cutting through the core liner of GC-4C.

Photo 4:  Cutting through the liner of GC-4C. (268 kb JPEG)

Sub-sampling BC-2A using a core liner.

Photo 5:  Sub-sampling BC-2A. (307 kb JPEG)

Picture of the weight for the gravity corer.

Photo 6: Weight for the gravity corer.
Penetration level is indicated by the
mud level on the weight. (206 kb JPEG)

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