Hydrocarbons in Hydrothermal Vent Fluids: The Role of Chromium-Bearing Catalysts-Reference-Cited by-同舟云学术

Hydrocarbons in Hydrothermal Vent Fluids: The Role of Chromium-Bearing Catalysts

Published:2004-05-14 Issue:5673 Volume:304 Page:1002-1005
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Foustoukos Dionysis I.¹,Seyfried William E.¹

Affiliation:

1. Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA.

Abstract

Fischer-Tropsch type (FTT) synthesis has long been proposed to account for the existence of hydrocarbons in hydrothermal fluids. We show that iron- and chromium-bearing minerals catalyze the abiotic formation of hydrocarbons. In addition to production of methane (CH 4aq ), we report abiotic generation of ethane (C 2 H 6aq ) and propane (C 3 H 8aq ) by mineral-catalyzed hydrothermal reactions at 390°Cand 400 bars. Results suggest that the chromium component in ultramafic rocks could be an important factor for FTT synthesis during water-rock interaction in mid-ocean ridge hydrothermal systems. This in turn could help to support microbial communities now recognized in the subsurface at deep-sea vents.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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