气候变化领域集成服务门户(CCPortal): The role of inherited crustal and lithospheric architecture during the evolution of the Red Sea: Insights from three dimensional analogue experiments

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DOI	10.1016/j.epsl.2020.116377
	The role of inherited crustal and lithospheric architecture during the evolution of the Red Sea: Insights from three dimensional analogue experiments
	Molnar N.; Cruden A.; Betts P.
发表日期	2020
ISSN	0012821X
卷号	544
英文摘要	The Red Sea represents an incipient ocean basin that is in transition from continental rifting to ocean initiation. In this paper we assess how pre-existing mantle and crustal heterogeneities within the African and Arabian lithospheres influenced rift development and propagation using three-dimensional (3D) brittle-ductile analogue laboratory experiments with a rotational boundary condition. Here we investigate the effect of three different configurations: (i) pre-existing rheological heterogeneities in the crust, (ii) in the lithospheric mantle, and (iii) in both. The experimental outcomes show that a linear weak zone in the lithospheric mantle layer exerts a first-order control on the overall mechanical behaviour of extending lithosphere, rift architecture and style of rifting. Crustal heterogeneities control second-order features, such as the trends of the main boundary escarpments along the rift axis. Our experiments reproduce the geological history of the Red Sea and provide key insights on its deformation history in space and time. We provide, for the first time, 3D dynamic constraints on how pre-existing weak zones in the lithosphere have controlled the temporal evolution of the Red Sea and determined its distinctive present-day morphology. The results find that certain morphological elements of the Red Sea can only be explained by the combined effects of crustal and mantle lithosphere heterogeneities. When applied to other natural examples, our findings provide significant new insights on the role of crustal and lithospheric heterogeneities during continental rifting. © 2020 Elsevier B.V.
关键词	analogue modelling continental tectonics extensional tectonics inherited structures rift morphology rifting
英文关键词	Geology; Continental rifting; Dynamic constraints; Laboratory experiments; Mechanical behaviour; Morphological elements; Second-order features; Three-dimensional analogues; Threedimensional (3-d); Mathematical models; analog model; crustal structure; extensional tectonics; heterogeneity; lithospheric structure; rifting; tectonic evolution; three-dimensional modeling; Indian Ocean; Red Sea [Indian Ocean]
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/202793
作者单位	School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC 3800, Australia
推荐引用方式 GB/T 7714	Molnar N.,Cruden A.,Betts P.. The role of inherited crustal and lithospheric architecture during the evolution of the Red Sea: Insights from three dimensional analogue experiments[J],2020,544.
APA	Molnar N.,Cruden A.,&Betts P..(2020).The role of inherited crustal and lithospheric architecture during the evolution of the Red Sea: Insights from three dimensional analogue experiments.Earth and Planetary Science Letters,544.
MLA	Molnar N.,et al."The role of inherited crustal and lithospheric architecture during the evolution of the Red Sea: Insights from three dimensional analogue experiments".Earth and Planetary Science Letters 544(2020).