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DOI | 10.1038/s41561-019-0378-7 |
Slurry extrusion on Ceres from a convective mud-bearing mantle | |
Ruesch, Ottaviano1; Genova, Antonio2,8; Neumann, Wladimir3,4; Quick, Lynnae C.5; Castillo-Rogez, Julie C.6; Raymond, Carol A.6; Russell, Christopher T.7; Zuber, Maria T.2 | |
2019-07-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:7页码:505-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; USA; Germany; Italy |
英文摘要 | Ceres is a 940-km-diameter dwarf planet that is predominantly composed of silicates and water ice. In Ceres' partially differentiated interior, extrusive processes have led to the emplacement on its surface of domes with heights of kilometres. Here we report the analysis of a gravity anomaly detected by the Dawn spacecraft, which is associated with the geologically recent dome Ahuna Mons. By modelling the anomaly with a mass concentration method, we determine that the subsurface structure includes a regional mantle uplift, which we interpret as a plume. This structure is the probable source of fluids forming Ahuna Mons and, together with constraints from the dome's morphology, indicates a rheological regime corresponding to a slurry of brine and solid particles. We propose that the properties of such a solid-liquid mixture can explain the viscous relaxation and the mineralogy of the dome. The presence of a plume and of slurry material indicate recent convection in a mud-bearing mantle. The inferred slurry extrusion on Ceres differs from the water-dominated cryovolcanism of icy satellites, and so reveals compositional and rheological diversity in extrusive phenomena on planetary surfaces. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000473104300005 |
WOS关键词 | GRAVITY-FIELD ; SUSPENSIONS ; RHEOLOGY ; STABILITY ; ORIGIN ; FLOW |
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/184800 |
专题 | 地球科学 气候变化 |
作者单位 | 1.European Space Agcy, European Space & Technol Ctr, Noordwijk, Netherlands; 2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA; 3.Univ Munster, Inst Planetol, Munster, Germany; 4.Deutsch Zentrum Luft & Raumfahrt, Inst Planetenforsch, Berlin, Germany; 5.Smithsonian Inst, Natl Air & Space Museum, Ctr Earth & Planetary Studies, Washington, DC 20560 USA; 6.CALTECH, Jet Prop Lab, Pasadena, CA USA; 7.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA; 8.Sapienza Univ Roma, Rome, Italy |
推荐引用方式 GB/T 7714 | Ruesch, Ottaviano,Genova, Antonio,Neumann, Wladimir,et al. Slurry extrusion on Ceres from a convective mud-bearing mantle[J]. NATURE GEOSCIENCE,2019,12(7):505-+. |
APA | Ruesch, Ottaviano.,Genova, Antonio.,Neumann, Wladimir.,Quick, Lynnae C..,Castillo-Rogez, Julie C..,...&Zuber, Maria T..(2019).Slurry extrusion on Ceres from a convective mud-bearing mantle.NATURE GEOSCIENCE,12(7),505-+. |
MLA | Ruesch, Ottaviano,et al."Slurry extrusion on Ceres from a convective mud-bearing mantle".NATURE GEOSCIENCE 12.7(2019):505-+. |
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