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Curiosity at Gale Crater, Mars: Characterization and analysis of the rocknest sand shadow

  • MSL Science Team
  • National Aeronautics and Space Administration
  • University of Texas at Austin
  • NASA Johnson Space Center
  • University of Arizona
  • Indiana University Bloomington
  • Malin Space Science Systems
  • United States Geological Survey
  • Max Planck Institute for Solar System Research
  • University of Copenhagen
  • Cornell University
  • University of Guelph
  • Universities Space Research Association
  • Stony Brook University
  • California Institute of Technology
  • Planetary Science Institute
  • Chesapeake Energy Corporation
  • University of California at Davis
  • Institute de Recherche en Astrophysique et Planétologie
  • Oregon State University
  • Finnish Meteorological Institute
  • NASA Goddard Space Flight Center
  • Rensselaer Polytechnic Institute
  • Carnegie Institution of Washington
  • University Nacional Autonóma de México
  • The University of Tennessee
  • Johns Hopkins University Applied Physics Laboratory
  • Princeton University
  • Arizona State University
  • SETI Institute

Research output: Contribution to journalArticlepeer-review

341 Scopus citations

Abstract

The Rocknest aeolian deposit is similar to aeolian features analyzed by the Mars Exploration Rovers (MERs) Spirit and Opportunity. The fraction of sand <150 micrometers in size contains ∼55% crystalline material consistent with a basaltic heritage and ∼45% x-ray amorphous material. The amorphous component of Rocknest is iron-rich and silicon-poor and is the host of the volatiles (water, oxygen, sulfur dioxide, carbon dioxide, and chlorine) detected by the Sample Analysis at Mars instrument and of the fine-grained nanophase oxide component first described from basaltic soils analyzed by MERs. The similarity between soils and aeolian materials analyzed at Gusev Crater, Meridiani Planum, and Gale Crater implies locally sourced, globally similar basaltic materials or globally and regionally sourced basaltic components deposited locally at all three locations.

Original languageEnglish
Article number1239505
JournalScience
Volume341
Issue number6153
DOIs
StatePublished - Jan 1 2013

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