Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088364 |
A Very Young Age for True Polar Wander on Europa from Related Fracturing | |
Paul Schenk; Isamu Matsuyama; Francis Nimmo | |
2020-07-29 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | En echelon fissures 100‐300 km long on Europa are found to be concentric and external to arcuate troughs previously attributed to true polar wander (TPW) of Europa’s ice shell, strengthening the case for TPW. Fissures are comprised of parallel faults distributed over 10‐to‐20‐km‐wide zones, with deformation focused in a main fissure 1‐2 km wide and up to 200 m deep. Fissures cross‐cut all known terrains, including (apparently) ejecta of bright ray crater Manannan, establishing that fissures and by inference TPW are among the most recent geologic events on Europa. Very late ~70° of TPW shell rotation requires that most observed structures on Europa are not in their original configuration with respect to other stress regimes, requiring complete reanalysis of Europa’s strain history. If reorientation happened recently, we predict that any crater distribution asymmetries and shell thickness variations measured by Europa Clipper will be offset from expected equilibrium patterns. |
领域 | 气候变化 |
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/286641 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Paul Schenk,Isamu Matsuyama,Francis Nimmo. A Very Young Age for True Polar Wander on Europa from Related Fracturing[J]. Geophysical Research Letters,2020. |
APA | Paul Schenk,Isamu Matsuyama,&Francis Nimmo.(2020).A Very Young Age for True Polar Wander on Europa from Related Fracturing.Geophysical Research Letters. |
MLA | Paul Schenk,et al."A Very Young Age for True Polar Wander on Europa from Related Fracturing".Geophysical Research Letters (2020). |
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。
修改评论