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Gale crater and impact processes – Curiosity’s first 364 Sols on Mars

Newsom, Horton E. and Mangold, Nicolas and Kah, Linda C. and Williams, Joshua M. and Arvidson, Ray E. and Stein, Nathan and Ollila, Ann M. and Bridges, John C. and Schwenzer, Susanne P. and King, Penelope L. and Grant, John A. and Pinet, Patrick and Bridges, Nathan T. and Calef, Fred and Wiens, Roger C. and Spray, John G. and Vaniman, David T. and Elston, Wolf E. and Berger, Jeff A. and Garvin, James B. and Palucis, Marisa C. and the MSL Science Team and DLR Collaborator (MSL Science Team), Reitz G. (2015) Gale crater and impact processes – Curiosity’s first 364 Sols on Mars. Icarus, 249, pp. 108-128. Elsevier. doi: 10.1016/j.icarus.2014.10.013. ISSN 0019-1035.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.icarus.2014.10.013

Abstract

Impact processes at all scales have been involved in the formation and subsequent evolution of Gale crater. Small impact craters in the vicinity of the Curiosity MSL landing site and rover traverse during the 364 Sols after landing have been studied both from orbit and the surface. Evidence for the effect of impacts on basement outcrops may include loose blocks of sandstone and conglomerate, and disrupted (fractured) sedimentary layers, which are not obviously displaced by erosion. Impact ejecta blankets are likely to be present, but in the absence of distinct glass or impact melt phases are difficult to distinguish from sedimentary/volcaniclastic breccia and conglomerate deposits. The occurrence of individual blocks with diverse petrological characteristics, including igneous textures, have been identified across the surface of Bradbury Rise, and some of these blocks may represent distal ejecta from larger craters in the vicinity of Gale. Distal ejecta may also occur in the form of impact spherules identified in the sediments and drift material. Possible examples of impactites in the form of shatter cones, shocked rocks, and ropy textured fragments of materials that may have been molten have been observed, but cannot be uniquely confirmed. Modification by aeolian processes of craters smaller than 40 m in diameter observed in this study, are indicated by erosion of crater rims, and infill of craters with aeolian and airfall dust deposits. Estimates for resurfacing suggest that craters less than 15 m in diameter may represent steady state between production and destruction. The smallest candidate impact crater observed is ∼0.6 m in diameter. The observed crater record and other data are consistent with a resurfacing rate of the order of 10 mm/Myr; considerably greater than the rate from impact cratering alone, but remarkably lower than terrestrial erosion rates.

Item URL in elib:https://elib.dlr.de/99583/
Document Type:Article
Title:Gale crater and impact processes – Curiosity’s first 364 Sols on Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Newsom, Horton E.Institute of Meteoritics, Department of Earth and Planetary Sciences, Albuquerque, NM 87131, USAUNSPECIFIED
Mangold, NicolasUNSPECIFIEDUNSPECIFIED
Kah, Linda C.UNSPECIFIEDUNSPECIFIED
Williams, Joshua M.UNSPECIFIEDUNSPECIFIED
Arvidson, Ray E.UNSPECIFIEDUNSPECIFIED
Stein, NathanUNSPECIFIEDUNSPECIFIED
Ollila, Ann M.UNSPECIFIEDUNSPECIFIED
Bridges, John C.UNSPECIFIEDUNSPECIFIED
Schwenzer, Susanne P.UNSPECIFIEDUNSPECIFIED
King, Penelope L.UNSPECIFIEDUNSPECIFIED
Grant, John A.UNSPECIFIEDUNSPECIFIED
Pinet, PatrickUNSPECIFIEDUNSPECIFIED
Bridges, Nathan T.UNSPECIFIEDUNSPECIFIED
Calef, FredUNSPECIFIEDUNSPECIFIED
Wiens, Roger C.UNSPECIFIEDUNSPECIFIED
Spray, John G.UNSPECIFIEDUNSPECIFIED
Vaniman, David T.UNSPECIFIEDUNSPECIFIED
Elston, Wolf E.UNSPECIFIEDUNSPECIFIED
Berger, Jeff A.UNSPECIFIEDUNSPECIFIED
Garvin, James B.UNSPECIFIEDUNSPECIFIED
Palucis, Marisa C. and the MSL Science TeamUNSPECIFIEDUNSPECIFIED
DLR Collaborator (MSL Science Team), Reitz G.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2015
Journal or Publication Title:Icarus
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:249
DOI :10.1016/j.icarus.2014.10.013
Page Range:pp. 108-128
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Mars, surface; Impact processes; Cratering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Vorhaben MSL-Radiation (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:26 Nov 2015 15:31
Last Modified:06 Sep 2019 15:26

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