Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084483 |
Contrasting Regional Soil Alteration Across the Topographic Dichotomy of Mars | |
Hood, D. R.1; Karunatillake, S.1; Gasnault, O.2; Williams, A. J.3; Dutrow, B.1; Ojha, L.4; Kobs, S.5; Kim, K.6; Heldmann, J.7; Fralick, C. | |
2019-12-03 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:23页码:13668-13677 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France; South Korea |
英文摘要 | Landscapes on either side of the martian topographic dichotomy bear distinct soil chemistry, but the processes associated with this distinction remain poorly understood. Here, correlation of soil chemistry at global to regional scales is examined with multivariate analysis of Gamma-Ray Spectrometer chemical maps and the Thermal Emission Spectrometer-derived Dust Cover Index (DCI). In the analysis, the northern lowlands show a strong S-Cl correlation, contrasting with the southern highlands, which show a stronger S-H2O correlation. These observations suggest aqueous interaction with soils throughout the southern highlands, preferentially dissolving Cl compounds and weakening S-Cl correlation. Strong S-Cl correlations in the northern lowlands suggest less interaction with aqueous H2O. Additionally, regional analyses demonstrate that DCI does not correlate with volatile chemistry at smaller scales and that Ca may be an important component of volatile-bearing material. These results provide new evidence for widespread aqueous interaction and possibly alteration of soil in the southern highlands. |
英文关键词 | martian soil geochemistry multivariate analysis habitability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500059400001 |
WOS关键词 | GALE CRATER ; MARTIAN SOIL ; SULFATES ; LOWLANDS ; THARSIS ; ROCKS |
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/225141 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA; 2.Inst Rech Astrophys & Planetol, Toulouse, France; 3.Univ Florida, Dept Geol Sci, Gainesville, FL USA; 4.Rutgers State Univ, Dept Earth & Planetary Sci, Piscataway, NJ USA; 5.Dept Geosci, Pocatello, ID 83209 USA; 6.Korea Inst Geosci & Mineral Resources, Daejeon, South Korea; 7.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA |
推荐引用方式 GB/T 7714 | Hood, D. R.,Karunatillake, S.,Gasnault, O.,et al. Contrasting Regional Soil Alteration Across the Topographic Dichotomy of Mars[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):13668-13677. |
APA | Hood, D. R..,Karunatillake, S..,Gasnault, O..,Williams, A. J..,Dutrow, B..,...&Fralick, C..(2019).Contrasting Regional Soil Alteration Across the Topographic Dichotomy of Mars.GEOPHYSICAL RESEARCH LETTERS,46(23),13668-13677. |
MLA | Hood, D. R.,et al."Contrasting Regional Soil Alteration Across the Topographic Dichotomy of Mars".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):13668-13677. |
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