Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL080387 |
Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting | |
Ulvrova, Martina M.1; Brune, Sascha2,3; Williams, Simon4 | |
2019-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:3页码:1338-1347 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Germany; Australia |
英文摘要 | Relative plate motions during continental rifting result from the interplay of local with far-field forces. Here we study the dynamics of rifting and breakup using large-scale numerical simulations of mantle convection with self-consistent evolution of plate boundaries. We show that continental separation follows a characteristic evolution with four distinctive phases: (1) an initial slow rifting phase with low divergence velocities and maximum tensional stresses, (2) a synrift speed-up phase featuring an abrupt increase of extension rate with a simultaneous drop of tensional stress, (3) the breakup phase with inception of fast sea-floor spreading, and (4) a deceleration phase occurring in most but not all models where extensional velocities decrease. We find that the speed-up during rifting is compensated by subduction acceleration or subduction initiation even in distant localities. Our study illustrates new links between local rift dynamics, plate motions, and subduction kinematics during times of continental separation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462072800025 |
WOS关键词 | MANTLE CONVECTION ; LITHOSPHERIC EXTENSION ; SUBDUCTION INITIATION ; PLATE REORGANIZATION ; ATLANTIC ; RECONSTRUCTIONS ; ARCHITECTURE ; KINEMATICS ; MAGMATISM ; STABILITY |
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/181351 |
专题 | 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Inst Geophys, Zurich, Switzerland; 2.GFZ German Res Ctr Geosci, Potsdam, Germany; 3.Univ Potsdam, Inst Earth & Environm Sci, Potsdam, Germany; 4.Univ Sydney, Sch Geosci, EarthByte Grp, Sydney, NSW, Australia |
推荐引用方式 GB/T 7714 | Ulvrova, Martina M.,Brune, Sascha,Williams, Simon. Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(3):1338-1347. |
APA | Ulvrova, Martina M.,Brune, Sascha,&Williams, Simon.(2019).Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting.GEOPHYSICAL RESEARCH LETTERS,46(3),1338-1347. |
MLA | Ulvrova, Martina M.,et al."Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting".GEOPHYSICAL RESEARCH LETTERS 46.3(2019):1338-1347. |
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