Characterization of Northern California petroleum by stable carbon isotopes
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Abstract
The purpose of this study is to characterize natural occurrences of petroleum at the surface and in the subsurface within northern California in order to define and map petroleum systems for U.S. Geological Survey energy resource assessments. Furthermore, the chemical characterization and mapping of natural petroleum occurrences could also be used to discriminate natural occurrences from accidental oil spills during the activities of extraction or transportation of petroleum. Samples include petroleum from exploratory well tests, producing fields, natural seeps, and oil-stained rocks, and condensates from gas wells. Most of the sample localities are in northern California but a few samples from central and southern California are included for comparison (table 1). Even though other analyses were performed, only stable carbon isotope (δ13C) data are presented here for brevity and because δ13C values are one of the most discriminating characteristics of California petroleum.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Characterization of Northern California petroleum by stable carbon isotopes |
| Series title | Open-File Report |
| Series number | 99-164 |
| DOI | 10.3133/ofr99164 |
| Year Published | 2001 |
| Language | English |
| Publisher | U.S. Dept. of the Interior, U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 19 p. |
| Country | United States |
| State | California |
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