Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site

L. A. Soderblom, R. C. Anderson, R. E. Arvidson, James Bell, N. A. Cabrol, W. Calvin, Philip Christensen, B. C. Clark, T. Economou, B. L. Ehlmann, W. H. Farrand, D. Fike, R. Gellert, T. D. Glotch, M. P. Golombek, R. Greeley, J. P. Grotzinger, K. E. Herkenhoff, D. J. Jerolmack, J. R. JohnsonB. Jolliff, C. Klingelhöfer, A. H. Knoll, Z. A. Learner, R. Li, M. C. Malin, S. M. McLennan, H. Y. McSween, D. W. Ming, R. V. Morris, J. W. Rice, L. Richter, R. Rieder, D. Rodionov, C. Schröder, F. P. Seelos IV, J. M. Soderblom, S. W. Squyres, R. Sullivan, W. A. Watters, C. M. Weitz, M. B. Wyatt, A. Yen, J. Zipfel

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

The soils at the Opportunity site are fine-grained basaltic sands mixed with dust and sulfate-rich outcrop debris. Hematite is concentrated in spherules eroded from the strata. Ongoing saltation exhumes the spherules and their fragments, concentrating them at the surface. Spherules emerge from soils coated, perhaps from subsurface cementation, by salts. Two types of vesicular clasts may represent basaltic sand sources. Eolian ripples, armored by well-sorted hematite-rich grains, pervade Meridiani Planum. The thickness of the soil on the plain is estimated to be about a meter. The flatness and thin cover suggest that the plain may represent the original sedimentary surface.

Original languageEnglish (US)
Pages (from-to)1723-1726
Number of pages4
JournalScience
Volume306
Issue number5702
DOIs
StatePublished - Dec 3 2004

ASJC Scopus subject areas

  • General

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