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Martian Surface Paleotemperatures from Thermochronology of Meteorites

Shuster, David L. and Weiss, Benjamin P. (2005) Martian Surface Paleotemperatures from Thermochronology of Meteorites. Science, 309 (5734). pp. 594-600. ISSN 0036-8075. doi:10.1126/science.1113077.

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The temporal evolution of past martian surface temperatures is poorly known. We used thermochronology and published noble gas and petrographic data to constrain the temperature histories of the nakhlites and martian meteorite ALH84001. We found that the nakhlites have not been heated to more than 350°C since they formed. Our calculations also suggest that for most of the past 4 billion years, ambient near-surface temperatures on Mars are unlikely to have been much higher than the present cold (<0°C) state.

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Additional Information:© 2005 American Association for the Advancement of Science. Received 4 April 2005; accepted 7 June 2005. We thank T. Swindle and D. Bogard for generously sharing their Ar data with us and for helpful discussions, along with T. Grove, A. Maloof, and J. Eiler. B.P.W. is supported by the NASA Mars Fundamental Research and NSF Geophysics programs.
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Issue or Number:5734
Record Number:CaltechAUTHORS:20141119-101159092
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51952
Deposited By: Tony Diaz
Deposited On:19 Nov 2014 23:23
Last Modified:10 Nov 2021 19:18

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