Pyroclastic activity at home plate in Gusev crater, Mars

S. W. Squyres, O. Aharonson, B. C. Clark, B. A. Cohen, L. Crumpler, P. A. De Souza, W. H. Farrand, R. Gellert, J. Grant, J. P. Grotzinger, A. F.C. Haldemann, J. R. Johnson, G. Klingelhöfer, K. W. Lewis, R. Li, T. McCoy, A. S. McEwen, H. Y. McSween, D. W. Ming, J. M. MooreR. V. Morris, T. J. Parker, J. W. Rice, Steven Ruff, M. Schmidt, C. Schröder, L. A. Soderblom, A. Yen

Research output: Contribution to journalArticle

121 Scopus citations

Abstract

Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarse-grained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic origin over an impact origin. The lower unit likely represents accumulation of pyroclastic materials, whereas the upper unit may represent eolian reworking of the same pyroclastic materials.

Original languageEnglish (US)
Pages (from-to)738-742
Number of pages5
JournalScience
Volume316
Issue number5825
DOIs
StatePublished - May 4 2007

ASJC Scopus subject areas

  • General

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    Squyres, S. W., Aharonson, O., Clark, B. C., Cohen, B. A., Crumpler, L., De Souza, P. A., Farrand, W. H., Gellert, R., Grant, J., Grotzinger, J. P., Haldemann, A. F. C., Johnson, J. R., Klingelhöfer, G., Lewis, K. W., Li, R., McCoy, T., McEwen, A. S., McSween, H. Y., Ming, D. W., ... Yen, A. (2007). Pyroclastic activity at home plate in Gusev crater, Mars. Science, 316(5825), 738-742. https://doi.org/10.1126/science.1139045