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Amazonian geologic history of the Echus Chasma and Kasei Valles system on Mars: New data and interpretations

Chapman, Mary and Neukum, Gerhard and Dumke, Alexander and Michael, Greg and Van Gasselt, Stephan and Kneissl, Thomas and Zuschneid, Wilhelm and Hauber, Ernst and Mangold, Nicolas (2010) Amazonian geologic history of the Echus Chasma and Kasei Valles system on Mars: New data and interpretations. Earth and Planetary Science Letters, 294, pp. 238-255. Elsevier. doi: 10.1016/j.epsl.2009.11.034.

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Official URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V61-4Y1W8R2-2&_user=100058&_coverDate=06%2F01%2F2010&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000007338&_version=1&_urlVersion=0&_userid=100058&md5=26e1b73c4


New high-resolution datasets have prompted a mapping-based study of the 2500-km-long Echus Chasma and Kasei Valles system that utilizes geomorphic details, stratigraphic relations, and cratering statistics derived from the new datasets. Our results suggest that between the Hesperian and Amazonian Epochs on Mars (3.7 Ga to Recent), the study area was affected by at least 4 episodes of widespread volcanic activity and 4 periods of episodic fluvio-glacial activity. This paper discusses the Amazonian (b1.8 Ga) history of the study area, during which time the last of the four volcanic episodes occurred between the last two episodes of fluvio-glacial activity. Highlights of our new findings from this time period include (1) evidence that suggests glaciers and near-surface ice may have persisted through Amazonian time in local areas over the entire length of Kasei Valles; (2) a new widespread platy-flow surface material that is interpreted to be 2100-km-runout flood lavas sourced from Echus Chasma; and (3) a fracture in Echus Chasma, identified to have sourced at least one late-stage flood, that may have been the origin for the platy-flow material and young north-trending Kasei flood water.

Item URL in elib:https://elib.dlr.de/67490/
Document Type:Article
Title:Amazonian geologic history of the Echus Chasma and Kasei Valles system on Mars: New data and interpretations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Chapman, MaryPlanetary Science Institute, Tucson, Arizona, USAUNSPECIFIED
Neukum, GerhardFU BerlinUNSPECIFIED
Dumke, AlexanderFU BerlinUNSPECIFIED
Michael, GregFU BerlinUNSPECIFIED
Van Gasselt, StephanFU BerlinUNSPECIFIED
Kneissl, ThomasFU BerlinUNSPECIFIED
Zuschneid, WilhelmFU BerlinUNSPECIFIED
Hauber, Ernsternst.hauber (at) dlr.deUNSPECIFIED
Mangold, NicolasLPGN, CNRS, Université Nantes, FranceUNSPECIFIED
Journal or Publication Title:Earth and Planetary Science Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.epsl.2009.11.034
Page Range:pp. 238-255
Keywords:Mars, water, erosion, outflow channel, chronology
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt MARS-EXPRESS / HRSC (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:06 Jan 2011 11:32
Last Modified:10 Jan 2019 15:47

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