Basaltic rocks analyzed by the Spirit rover in Gusev Crater

被引:167
作者
McSween, HY [1 ]
Arvidson, RE
Bell, JF
Blaney, D
Cabrol, NA
Christensen, PR
Clark, BC
Crisp, JA
Crumpler, LS
Des Marais, DJ
Farmer, JD
Gellert, R
Ghosh, A
Gorevan, S
Graff, T
Grant, J
Haskin, LA
Herkenhoff, KE
Johnson, JR
Jolliff, BL
Klingelhoefer, G
Knudson, AT
McLEnnan, S
Milam, KA
Moersch, JE
Morris, RV
Rieder, R
Ruff, SW
de Souza, PA
Squyres, SW
Wänke, H
Wang, A
Wyatt, MB
Yen, A
Zipfel, J
机构
[1] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA
[2] Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA
[3] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA
[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[5] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
[6] Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA
[7] Lockheed Martin Corp, Littleton, CO 80127 USA
[8] New Mexico Museum Nat Hist & Sci, Albuquerque, NM 87104 USA
[9] Max Planck Inst Chem, D-55099 Mainz, Germany
[10] Honeybee Robot, New York, NY 10012 USA
[11] Smithsonian Inst, Natl Air & Space Museum, Washington, DC 20560 USA
[12] US Geol Survey, Flagstaff, AZ 86001 USA
[13] Univ Mainz, Inst Anorgan & Analyt Chem, D-6500 Mainz, Germany
[14] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA
[15] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA
[16] Co Vale Rio Doce, BR-29090900 Vitoria, ES, Brazil
关键词
D O I
10.1126/science.1099851
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The Spirit landing site in Gusev Crater on Mars contains dark, fine-grained, vesicular rocks interpreted as lavas. Pancam and Mini-Thermal Emission Spectrometer (Mini-TES) spectra suggest that all of these rocks are similar but have variable coatings and dust mantles. Magnified images of brushed and abraded rock surfaces show alteration rinds and veins. Rock interiors contain less than or equal to25% megacrysts. Chemical analyses of rocks by the Alpha Particle X-ray Spectrometer are consistent with picritic basalts, containing normative olivine, pyroxenes, plagioclase, and accessory FeTi oxides. Mossbauer, Pancam, and Mini-TES spectra confirm the presence of olivine, magnetite, and probably pyroxene. These basalts extend the known range of rock compositions composing the martian crust.
引用
收藏
页码:842 / 845
页数:4
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