Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079073 |
Sand Mineralogy Within the Bagnold Dunes, Gale Crater, as Observed In Situ and From Orbit | |
Rampe, E. B.1; Lapotre, M. G. A.2; Bristow, T. F.3; Arvidson, R. E.4; Morris, R. V.1; Achilles, C. N.5; Weitz, C.6; Blake, D. F.3; Ming, D. W.1; Morrison, S. M.7; Vaniman, D. T.6; Chipera, S. J.8; Downs, R. T.5; Grotzinger, J. P.9; Hazen, R. M.7; Peretyazhko, T. S.10; Sutter, B.10; Tu, V.10; Yen, A. S.11; Horgan, B.12; Castle, N.13; Craig, P. I.6; Des Marais, D. J.3; Farmer, J.14; Gellert, R.15; McAdam, A. C.16; Morookian, J. M.11; Sarrazin, P. C.17; Treiman, A. H.13 | |
2018-09-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:18页码:9488-9497 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Curiosity investigated active eolian sands near linear dunes during Phase 2 of the Bagnold Dunes campaign in Gale crater, Mars. Ogunquit Beach, a sample scooped from a large-ripple trough within the Mount Desert Island ripple field and delivered to the Chemistry and Mineralogy (CheMin) X-ray diffraction instrument, is dominated by basaltic igneous minerals and X-ray amorphous materials. CheMin mineralogy of the Gobabeb sample acquired at a large-ripple crest on the Namib barchan dune during Phase 1 is similar to Ogunquit Beach. Ogunquit Beach, however, contains more plagioclase and Gobabeb contains more olivine. Compact Reconnaissance Imaging Spectrometer for Mars (CRISM)-based estimates of mineralogy at the optical surface of Namib Dune and Mount Desert Island demonstrate that surface sands are enriched in olivine and depleted in plagioclase over Mount Desert Island relative to Namib Dune. Differences between CheMin-derived and CRISM-derived mineralogies suggest sorting by grain size on bedform to dune field scales. Crystal chemistry from CheMin suggests contributions from multiple igneous sources and the local bedrock. Plain Language Summary Remote sensing data from orbit indicate that wind-blown sands in the Bagnold Dune Field in Gale crater, Mars, are sorted by their composition. The Mars Science Laboratory Curiosity rover studied the Bagnold Dune Field at two locations to investigate the chemical and mineral composition of the sands and why they are sorted across the dune field. Data from Curiosity show distinct differences between the minerals in the upwind portion of the dune field compared to the downwind portion, but these differences are not the same as those observed from orbit. The scale and location of the sampling by Curiosity compared to orbiters explains the discrepancy between the two techniques. Results from both techniques suggest subtle differences in mineralogy within a single dune and across the dune field that can be explained by sorting from wind and contribution from the erosion of local bedrock. |
英文关键词 | Mars eolian mineralogy X-ray diffraction CheMin CRISM |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447761300018 |
WOS关键词 | MARS ; SURFACE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28610 |
专题 | 气候变化 |
作者单位 | 1.NASA, Astromat Res & Explorat Sci Div, Johnson Space Ctr, Houston, TX 77058 USA; 2.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 3.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 4.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA; 5.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA; 6.Planetary Sci Inst, Tucson, AZ USA; 7.Carnegie Inst Sci, Geophys Lab, Washington, DC 20005 USA; 8.Chesapeake Energy, Oklahoma City, OK USA; 9.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 10.NASA, Jacobs, Johnson Space Ctr, Houston, TX USA; 11.CALTECH, Jet Prop Lab, Pasadena, CA USA; 12.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; 13.Lunar & Planetary Inst, Houston, TX USA; 14.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA; 15.Univ Guelph, Dept Phys, Guelph, ON, Canada; 16.Goddard Space Flight Ctr, Greenbelt, MD USA; 17.SETI Inst, Mountain View, CA USA |
推荐引用方式 GB/T 7714 | Rampe, E. B.,Lapotre, M. G. A.,Bristow, T. F.,et al. Sand Mineralogy Within the Bagnold Dunes, Gale Crater, as Observed In Situ and From Orbit[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(18):9488-9497. |
APA | Rampe, E. B..,Lapotre, M. G. A..,Bristow, T. F..,Arvidson, R. E..,Morris, R. V..,...&Treiman, A. H..(2018).Sand Mineralogy Within the Bagnold Dunes, Gale Crater, as Observed In Situ and From Orbit.GEOPHYSICAL RESEARCH LETTERS,45(18),9488-9497. |
MLA | Rampe, E. B.,et al."Sand Mineralogy Within the Bagnold Dunes, Gale Crater, as Observed In Situ and From Orbit".GEOPHYSICAL RESEARCH LETTERS 45.18(2018):9488-9497. |
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