气候变化领域集成服务门户(CCPortal): Slurry extrusion on Ceres from a convective mud-bearing mantle

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DOI	10.1038/s41561-019-0378-7
	Slurry extrusion on Ceres from a convective mud-bearing mantle
	Ruesch O.; Genova A.; Neumann W.; Quick L.C.; Castillo-Rogez J.C.; Raymond C.A.; Russell C.T.; Zuber M.T.
发表日期	2019
ISSN	17520894
卷号	12 期号:7
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. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	convection; cryosphere; emplacement; extrusion; gravity anomaly; mantle; planet; uplift; Ceres
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124645
作者单位	European Space Agency, European Space and Technology Center, Noordwijk, Netherlands; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Institut für Planetologie, University of Münster, Münster, Germany; Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt, Berlin, Germany; Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, DC, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; Sapienza Università di Roma, Rome, Italy
推荐引用方式 GB/T 7714	Ruesch O.,Genova A.,Neumann W.,et al. Slurry extrusion on Ceres from a convective mud-bearing mantle[J],2019,12(7).
APA	Ruesch O..,Genova A..,Neumann W..,Quick L.C..,Castillo-Rogez J.C..,...&Zuber M.T..(2019).Slurry extrusion on Ceres from a convective mud-bearing mantle.Nature Geoscience,12(7).
MLA	Ruesch O.,et al."Slurry extrusion on Ceres from a convective mud-bearing mantle".Nature Geoscience 12.7(2019).