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C13 and O18 compositions in some fresh-water carbonates associated with ultramafic rocks and serpentinites: western United States

Geochimica et Cosmochimica Acta

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Abstract

All carbonates associated with the ultramafic rocks and serpentinites of the western United States are shown by their stable isotope ratios to be of near-surface, low-temperature origin. These include vein materials that have been previously classified as hydrothermal. New laboratory and natural data were obtained on the equilibrium isotope relations between hydromagnesite and water. The origins of travertines in the ultramafic area are easily distinguished on the basis of their stable isotope ratios. The extremely heavy isotope ratios of nesquehonites suggest an intricate evaporating-film mechanism of formation. ?? 1971.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
C13 and O18 compositions in some fresh-water carbonates associated with ultramafic rocks and serpentinites: western United States
Series title:
Geochimica et Cosmochimica Acta
Volume
35
Issue:
7
Year Published:
1971
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geochimica et Cosmochimica Acta
First page:
687
Last page:
697