Digital Coordinates and Age of More Than 13,000 Foraminifers Samples Collected by Chevron Petroleum Geologists in California

Malmblorg, William T.; West, William B.; Brabb, Earl E.; Parker, John M.

Abstract:

The general location and age of more than 33,500 mostly foraminifer samples from Chevron surface localities in nearly 600 U.S. Geological Survey (USGS) 7.5‘ quadrangles from California were provided by Brabb and Parker (2003). Barren and non-diagnostic samples plus many that have no paleontologic information were omitted to provide a revised list for more than 27,000 of these samples by Brabb and Parker (2005). The locations for many of these samples were recorded by Chevron geoscientists on topographic maps (originals now in the USGS Library in Menlo Park, Calif.). The recent availability of digital databases for geologic and topographic maps has provided the opportunity to prepare a database of the locations of these Chevron samples so that the information can be combined with geology and topography for plotting or geospatial analysis. This report provides specific locations for more than 13,000 samples in central California that have enough paleontologic information to determine their age but omits thousands of samples that are too closely spaced to differentiate or those that have only a general location.

Genre:

USGS Numbered Series

ProdID:

86180

Citation Author:

Malmblorg, William T.; West, William B.; Brabb, Earl E.; Parker, John M.

Citation Contributing Office:

USGS Western Earth Surface Processes

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Citation Language:

ENGLISH

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Citation LatN:

041.9951

Citation LatS:

032.3265

Citation LonE:

-115.6688

Citation LonW:

-124.3982

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Citation Phsyical Description:

Report: iii, 3 p.; ReadMe; 2 Databases (available as Excel, csv, and tab separated txt)

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Citation Publisher:

Geological Survey (U.S.)

Citation Series:

Open-File Report

Citation Series Code:

OFR

Citation Series Number:

2008-1187

Citation Search Results Text:

Digital Coordinates and Age of More Than 13,000 Foraminifers Samples Collected by Chevron Petroleum Geologists in California; 2008; OFR; 2008-1187; Malmblorg, William T.; West, William B.; Brabb, Earl E.; Parker, John M.