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

Science

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DOI: 10.1126/science.1105127

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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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Soils of eagle crater and Meridiani Planum at the opportunity Rover landing site
Series title:
Science
DOI:
10.1126/science.1105127
Volume
306
Issue:
5702
Year Published:
2004
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
1723
Last page:
1726