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Long-runout landslides and the long-lasting effects of early water activity on Mars

Watkins, Jessica A. and Ehlmann, Bethany L. and Yin, An (2015) Long-runout landslides and the long-lasting effects of early water activity on Mars. Geology, 43 (2). pp. 107-110. ISSN 0091-7613. doi:10.1130/G36215.1. https://resolver.caltech.edu/CaltechAUTHORS:20150225-093353538

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Abstract

Long-runout subaerial landslides (>50 km) are rare on Earth but are common features shaping Mars’ Valles Marineris troughs. In this study, we investigated the highly debated emplacement mechanisms of these Martian landslides by combining spectral and satellite-image analyses. Our results suggest that hydrated silicates played a decisive role in facilitating landslide transport by lubricating the basal sliding zone. This new understanding implies that clay minerals, generated as a result of water-rock interactions in the Noachian and Hesperian (4.1–3.3 Ga), exert a long-lasting influence on geomorphic processes that shape the surface of the planet.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1130/G36215.1DOIArticle
http://geology.gsapubs.org/content/43/2/107PublisherArticle
http://geology.geoscienceworld.org/content/43/2/107PublisherArticle
http://resolver.caltech.edu/CaltechAUTHORS:20160421-151118299Related ItemReply
ORCID:
AuthorORCID
Ehlmann, Bethany L.0000-0002-2745-3240
Additional Information:© 2015 Geological Society of America. Manuscript received 23 August 2014; Revised manuscript received 8 November 2014; Manuscript accepted 12 November 2014. First published online January 5, 2015. This project is supported by National Science Foundation Graduate Research Fellowship DGE-1144087 to Watkins. This paper benefited from critical reviews by A. Lucas, C. Okubo, editor J. Spotila, and anonymous reviewers.
Funders:
Funding AgencyGrant Number
NSF Graduate Research FellowshipDGE-1144087
Issue or Number:2
DOI:10.1130/G36215.1
Record Number:CaltechAUTHORS:20150225-093353538
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150225-093353538
Official Citation:Jessica A. Watkins, Bethany L. Ehlmann, and An Yin Long-runout landslides and the long-lasting effects of early water activity on Mars Geology, February 2015, v. 43, p. 107-110, first published on January 5, 2015, doi:10.1130/G36215.1
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55189
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Feb 2015 20:37
Last Modified:10 Nov 2021 20:42

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