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Leachates formed carbonates in ALH84001 and on early Mars

Melwani Daswani, M.; Grady, M. M.; Schwenzer, S. P. and Wright, I. P. (2013). Leachates formed carbonates in ALH84001 and on early Mars. In: European Planetary Science Congress (EPSC) 2013, 8-13 Sep 2013, London, UK.

URL: http://www.epsc2013.eu/
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Abstract

Evidence abounds for liquid water existing on Mars prior to the late heavy bombardment (LHB) ~ 3.9 Ga ago and physicochemically interacting with rocks to form distinct geomorphological landforms and mineralogical alteration products (e.g. [3, 4, 8, 14]). ALH84001, the oldest (~4.5–4.1 Ga [11, 13]) known martian meteorite, contains secondary carbonate minerals formed on Mars ~3.9–4.0 Ga ago [5], roughly contemporaneous to the LHB. Recent isotopic evidence supports their formation at low temperature (~18 °C [9]) and also by fluids derived from aqueous weathering in the Noachian/Phyllosian, due to the elevated 87Sr/86Sr ratios in the carbonates and bulk rock of ALH84001 [1].

Item Type: Conference or Workshop Item
Copyright Holders: 2013 The Authors
Keywords: Martian meteorite; habitability; clay formation; carbonate formation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Research Group: Space
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Item ID: 39387
Depositing User: Susanne Schwenzer
Date Deposited: 04 Feb 2014 16:40
Last Modified: 07 Dec 2018 10:21
URI: http://oro.open.ac.uk/id/eprint/39387
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