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Ancient Geodynamics and Global-Scale Hydrology on Mars

Phillips, Roger J. and Zuber, Maria T. and Solomon, Sean C. and Golombek, Matthew P. and Jakosky, Bruce M. and Banerdt, W. Bruce and Smith, David E. and Williams, Rebecca M. E. and Hynek, Brian M. and Aharonson, Oded and Hauck, Steven A., II (2001) Ancient Geodynamics and Global-Scale Hydrology on Mars. Science, 291 (5513). pp. 2587-2591. ISSN 0036-8075.

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Loading of the lithosphere of Mars by the Tharsis rise explains much of the global shape and long-wavelength gravity field of the planet, including a ring of negative gravity anomalies and a topographic trough around Tharsis, as well as gravity anomaly and topographic highs centered in Arabia Terra and extending northward toward Utopia. The Tharsis-induced trough and antipodal high were largely in place by the end of the Noachian Epoch and exerted control on the location and orientation of valley networks. The release of carbon dioxide and water accompanying the emplacement of ∼3 × 10^8 cubic kilometers of Tharsis magmas may have sustained a warmer climate than at present, enabling the formation of ancient valley networks and fluvial landscape denudation in and adjacent to the large-scale trough.

Item Type:Article
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URLURL TypeDescription DOIArticle
Golombek, Matthew P.0000-0002-1928-2293
Williams, Rebecca M. E.0000-0003-1571-6952
Aharonson, Oded0000-0001-9930-2495
Additional Information:© 2001 American Association for the Advancement of Science. 29 December 2000; accepted 2 March 2001; Published online 15 March 2001. We thank the MGS Radio Science and the Mars Orbiter Laser Altimeter (MOLA) investigations, which are supported by the NASA Mars Exploration Program.
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Issue or Number:5513
Record Number:CaltechAUTHORS:20130418-104625985
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38021
Deposited By: Jason Perez
Deposited On:18 Apr 2013 21:35
Last Modified:09 Mar 2020 13:19

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