Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2005JE002503 |
Geology of the Gusev cratered plains from the Spirit rover transverse | |
Golombek, MP; Crumpler, LS; Grant, JA; Greeley, R; Cabrol, NA; Parker, TJ; Rice, JW; Ward, JG; Arvidson, RE; Moersch, JE; Fergason, RL; Christensen, PR; Castano, A; Castano, R; Haldemann, AFC; Li, R; Bell, JF; Squyres, SW | |
通讯作者 | Golombek, MP |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS |
ISSN | 2169-9097 |
EISSN | 2169-9100 |
出版年 | 2006 |
卷号 | 111期号:E2 |
英文摘要 | [1] The cratered plains of Gusev traversed by Spirit are generally low-relief rocky plains dominated by impact and eolian processes. Ubiquitous shallow, soil-filled, circular depressions, called hollows, are modified impact craters. Rocks are dark, fine-grained basalts, and the upper 10 m of the cratered plains appears to be an impact-generated regolith developed over intact basalt flows. Systematic field observations across the cratered plains identified vesicular clasts and rare scoria similar to original lava flow tops, consistent with an upper inflated surface of lava flows with adjacent collapse depressions. Crater and hollow morphometry are consistent with most being secondaries. The size-frequency distribution of rocks > 0.1 m diameter generally follows exponential functions similar to other landing sites for total rock abundances of 5-35%. Systematic clast counts show that areas with higher rock abundance and more large rocks have higher thermal inertia. Plains with lower thermal inertia have fewer rocks and substantially more pebbles that are well sorted and evenly spaced, similar to a desert pavement or lag. Eolian bed forms (ripples and wind tails) have coarse surface lags, and many are dust covered and thus likely inactive. Deflation of the surface similar to 5-25 cm likely exposed two-toned rocks and elevated ventifacts and transported fines into craters creating the hollows. This observed redistribution yields extremely slow average erosion rates of similar to 0.03 nm/yr and argues for very little long-term net change of the surface and a dry and desiccating environment similar to today’s since the Hesperian (or similar to 3 Ga). |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000234996400002 |
WOS关键词 | SIZE-FREQUENCY DISTRIBUTIONS ; LANDING SITE PREDICTIONS ; MINI-TES EXPERIMENT ; MAADIM-VALLIS ; MARS PATHFINDER ; BRITTLE SOLIDS ; FRAGMENT SIZE ; ROCKS ; RATES ; SURFACE |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | Arizona State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/152201 |
作者单位 | (1)CALTECH, Jet Propuls Lab, Pasadena, CA 91125 USA;(2)New Mexico Museum Nat Hist & Sci, Albuquerque, NM USA;(3)Smithsonian Inst, Washington, DC 20560 USA;(4)Arizona State Univ, Dept Geol Sci, Tempe, AZ USA;(5)NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;(6)Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA;(7)Univ Tennessee, Dept Geol Sci, Knoxville, TN 37996 USA;(8)Ohio State Univ, Dept Civil & Environm Engn & Geodet Sci, Columbus, OH 43210 USA;(9)Cornell Univ, Dept Astron, Ithaca, NY 14853 USA |
推荐引用方式 GB/T 7714 | Golombek, MP,Crumpler, LS,Grant, JA,et al. Geology of the Gusev cratered plains from the Spirit rover transverse[J]. Arizona State University,2006,111(E2). |
APA | Golombek, MP.,Crumpler, LS.,Grant, JA.,Greeley, R.,Cabrol, NA.,...&Squyres, SW.(2006).Geology of the Gusev cratered plains from the Spirit rover transverse.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,111(E2). |
MLA | Golombek, MP,et al."Geology of the Gusev cratered plains from the Spirit rover transverse".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 111.E2(2006). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。