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|Biological and Environmental Sciences Journal Articles
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|Soils of eagle crater and Meridiani Planum at the Opportunity Rover landing site
|Soderblom, Larry A
Anderson, Robert C
Arvidson, Raymond E
Bell III, James F
Cabrol, Nathalie A
Calvin, Wendy M
Christensen, Philip R
Clark, Benton C
Economou, Thanasis E Tom
Ehlmann, Bethany L
Farrand, William H
Fike, David A
Glotch, Timothy D
|Soderblom LA, Anderson RC, Arvidson RE, Bell III JF, Cabrol NA, Calvin WM, Christensen PR, Clark BC, Economou TET, Ehlmann BL, Farrand WH, Fike DA, Gellert R, Glotch TD & Schröder C (2004) Soils of eagle crater and Meridiani Planum at the Opportunity Rover landing site. Science, 306 (5702), pp. 1723-1726. https://doi.org/10.1126/science.1105127
|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.
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|Additional co-authors: MP Golombek, R Greeley, JP Grotzinger, KE Herkenhoff, DJ Jerolmack, JR Johnson, B Jolliff, G Klingelhöfer, AH Knoll, ZA Learner, R Li, MC Malin, SM McLennan, HY McSween, DW Ming, RV Morris, JW Rice Jr, L Richter, R Rieder, D Rodionov, FP Seelos IV, JM Soderblom, SW Squyres, R Sullivan, WA Watters, CM Weitz, MB Wyatt, A Yen, J Zipfel
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