气候变化领域集成服务门户(CCPortal): The impact of oblique inheritance and changes in relative plate motion on the development of rift-transform systems

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DOI	10.1016/j.epsl.2020.116277
	The impact of oblique inheritance and changes in relative plate motion on the development of rift-transform systems
	Farangitakis G.P.; Heron P.J.; McCaffrey K.J.W.; van Hunen J.; Kalnins L.M.
发表日期	2020
ISSN	0012821X
卷号	541
英文摘要	In transform margins, oblique structural inheritance and plate motion vector changes have a direct impact on the margin's morphology and duration of transform activity. We investigate the effect of these two factors using numerical modelling. To simulate oblique inheritance in continental lithosphere, we model an initial rift-transform-rift configuration oriented at a range of angles (−45o to +45o) with respect to the extension direction. In a second suite of calculations, we first extend a rift-transform-rift system orthogonally and then vary the extension direction to simulate rotation of the far-field stress directions, and hence the relative plate motion. We found that transpressional deformation on the transform results in increased duration of fault activity and diffuse, longer transform zones at higher angles, while the opposite is true for the transtensional case. These observations are in good agreement with natural examples such as the Ungava Transform Zone, the Gulf of California and the Gulf of Aden, indicating that relative plate rotation plays an important role in the structural evolution of transform margins. Finally, we present a metric that links current transform margin morphology to past evolution. © 2020 The Authors
关键词	oblique rifting relative plate rotation structural inheritance transpression transtension
英文关键词	Lithology; Morphology; Structural geology; Continental lithosphere; Far-field stress; Fault activity; Gulf of California; Structural evolution; Structural inheritance; Transform margin; Transpressional deformation; Plates (structural components); continental lithosphere; faulting; numerical model; plate motion; rift zone; stress field; transpression; transtension
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202578
作者单位	Department of Earth Sciences, Durham University, Science Site, Durham, DH1 3LE, United Kingdom; School of GeoSciences, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3FE, United Kingdom
推荐引用方式 GB/T 7714	Farangitakis G.P.,Heron P.J.,McCaffrey K.J.W.,et al. The impact of oblique inheritance and changes in relative plate motion on the development of rift-transform systems[J],2020,541.
APA	Farangitakis G.P.,Heron P.J.,McCaffrey K.J.W.,van Hunen J.,&Kalnins L.M..(2020).The impact of oblique inheritance and changes in relative plate motion on the development of rift-transform systems.Earth and Planetary Science Letters,541.
MLA	Farangitakis G.P.,et al."The impact of oblique inheritance and changes in relative plate motion on the development of rift-transform systems".Earth and Planetary Science Letters 541(2020).