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Carbon-13-rich diagenetic carbonates in miocene formations of California and Oregon

Science

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Abstract

Carbon unusually rich in C13 (??C13 = +5.4 to +19.0 per mil relative to the Peedee belemnite carbonate standard of the University of Chicago) is characteristic of certain diagenetic limestones and dolomites in the Miocene Monterey Shale of California and the Nye Mudstone of Oregon. This heavy carbon may have originated through low-temperature equilibration between CO3- and CO2 in migrating carbonated waters or between CH4 and CO2 in natural gas. Light carbon (??C13 = -5.6 to -18.2 per mil) derived through nonequilibrium oxidation of organic matter also occurs in the carbonate of Monterey Shale in some localities, but at most places it is much less common than heavy carbon.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Carbon-13-rich diagenetic carbonates in miocene formations of California and Oregon
Series title:
Science
Volume
156
Issue:
3781
Year Published:
1967
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1484
Last page:
1486
Number of Pages:
3