Methane seep carbonates yield clumped isotope signatures out of equilibrium with formation temperatures

S. J. Loyd; J. Sample; R. E. Tripati; W. F. Defliese; K. Brooks; M. Hovland; M. Torres; J. Marlow; L. G. Hancock; R. Martin; T. Lyons; A. E. Tripati

doi:10.1038/ncomms12274

Nature Communications (Jul 2016)

Methane seep carbonates yield clumped isotope signatures out of equilibrium with formation temperatures

S. J. Loyd,
J. Sample,
R. E. Tripati,
W. F. Defliese,
K. Brooks,
M. Hovland,
M. Torres,
J. Marlow,
L. G. Hancock,
R. Martin,
T. Lyons,
A. E. Tripati

Affiliations

S. J. Loyd: Department of Geological Sciences, California State University
J. Sample: School of Earth Sciences and Environmental Sustainability, Northern Arizona University
R. E. Tripati: Department of Earth, Planetary and Space Sciences, University of California
W. F. Defliese: Department of Earth, Planetary and Space Sciences, University of California
K. Brooks: Department of Earth, Planetary and Space Sciences, University of California
M. Hovland: Centre for Geobiology, University of Bergen
M. Torres: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University
J. Marlow: Division of Geological and Planetary Sciences, California Institute of Technology
L. G. Hancock: Department of Earth Sciences, University of California
R. Martin: Department of Earth and Space Sciences/Burke Museum, University of Washington
T. Lyons: Department of Earth Sciences, University of California
A. E. Tripati: Department of Earth, Planetary and Space Sciences, University of California

DOI: https://doi.org/10.1038/ncomms12274
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 12

Abstract

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The geochemistry of methane cold seep carbonates is often used to reconstruct environmental conditions. Loyd et al. find disequilibrium clumped isotope compositions in modern seep carbonates that suggest temperatures up to 50°C too high, raising doubt on seep carbonate temperature reconstructions.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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