Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-020-0606-1 |
Corona structures driven by plume-lithosphere interactions and evidence for ongoing plume activity on Venus | |
Guelcher, Anna J. P.1; Gerya, Taras V.1; Montesi, Laurent G. J.2; Munch, Jessica1 | |
2020-07-20 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Switzerland; USA |
英文摘要 | In the absence of global plate tectonics, mantle convection and plume-lithosphere interaction are the main drivers of surface deformation on Venus. Among documented tectonic structures, circular volcano-tectonic features known as coronae may be the clearest surface manifestations of mantle plumes and hold clues to the global Venusian tectonic regime. Yet, the exact processes underlying coronae formation and the reasons for their diverse morphologies remain controversial. Here we use three-dimensional thermomechanical numerical simulations of impingement of a thermal mantle plume on the Venusian lithosphere to assess the origin and diversity of large Venusian coronae. The ability of the mantle plume to penetrate into the Venusian lithosphere results in four main outcomes: lithospheric dripping, short-lived subduction, embedded plume and plume underplating. During the first three scenarios, plume penetration and spreading induce crustal thickness variations that eventually lead to a final topographic isostasy-driven topographic inversion from circular trenches surrounding elevated interiors to raised rims surrounding inner depressions, as observed on many Venusian coronae. Different corona structures may represent not only different styles of plume-lithosphere interactions but also different stages in evolution. A morphological analysis of large existing coronae leads to the conclusion that at least 37 large coronae (including the largest Artemis corona) are active, providing evidence for widespread ongoing plume activity on Venus. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000550620700003 |
WOS关键词 | INDUCED SUBDUCTION ; PLATE-TECTONICS ; TOPOGRAPHIC RISES ; MANTLE DYNAMICS ; EVOLUTION ; MODELS ; INITIATION ; VOLCANISM ; GRAVITY ; FLEXURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
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/286775 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Inst Geophys, Dept Earth Sci, Zurich, Switzerland; 2.Univ Maryland, Dept Geol, College Pk, MD 20742 USA |
推荐引用方式 GB/T 7714 | Guelcher, Anna J. P.,Gerya, Taras V.,Montesi, Laurent G. J.,et al. Corona structures driven by plume-lithosphere interactions and evidence for ongoing plume activity on Venus[J]. NATURE GEOSCIENCE,2020. |
APA | Guelcher, Anna J. P.,Gerya, Taras V.,Montesi, Laurent G. J.,&Munch, Jessica.(2020).Corona structures driven by plume-lithosphere interactions and evidence for ongoing plume activity on Venus.NATURE GEOSCIENCE. |
MLA | Guelcher, Anna J. P.,et al."Corona structures driven by plume-lithosphere interactions and evidence for ongoing plume activity on Venus".NATURE GEOSCIENCE (2020). |
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