气候变化领域集成服务门户(CCPortal): Plate tectonic chain reaction revealed by noise in the Cretaceous quiet zone

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DOI	10.1038/s41561-022-00893-7
	Plate tectonic chain reaction revealed by noise in the Cretaceous quiet zone
	Guerer, Derya; Granot, Roi; van Hinsbergen, Douwe J. J.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	233
结束页码	+
卷号	15 期号:3 页码:15
英文摘要	Formation of a subduction zone in the Neotethys Ocean triggered a cascade of plate tectonic events, according to a plate kinematic model constrained by geomagnetic intensity variations. Global reorganizations of tectonic plates may be caused by a trigger such as a continental collision or a rising mantle plume. However, whether and how such a trigger propagates through a plate circuit remains unclear. Here we use a plate kinematic model to quantify relative motions between the African and Eurasian plates following a plume-induced plate motion change that triggered formation of a new subduction zone within the Neotethys Ocean at 105 Ma. We constrain the plate kinematic model by geomagnetic intensity variations recorded in Atlantic quiet zone crust that formed during the Cretaceous Normal Superchron (126-83 Ma), during which magnetic reversals were absent. We find that convergence rate changes between Africa and Eurasia are well explained by the initiation and arrest of the plume-induced subduction zone. Our plate kinematic model also reveals that the plate acceleration that followed upon subduction initiation changed the Africa-Eurasia convergence direction, which in turn was accommodated by subsequent subduction initiation about 85 Ma in the Alpine region that then triggered a cascade of regional tectonic events. This plate tectonic chain reaction illustrates how changes in plate motion, underpinned by mantle dynamics, may self-perpetuate through a plate circuit.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000763894200001
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272512
作者单位	Utrecht University; Ben Gurion University; Australian National University
推荐引用方式 GB/T 7714	Guerer, Derya,Granot, Roi,van Hinsbergen, Douwe J. J.. Plate tectonic chain reaction revealed by noise in the Cretaceous quiet zone[J],2022,15(3):15.
APA	Guerer, Derya,Granot, Roi,&van Hinsbergen, Douwe J. J..(2022).Plate tectonic chain reaction revealed by noise in the Cretaceous quiet zone.NATURE GEOSCIENCE,15(3),15.
MLA	Guerer, Derya,et al."Plate tectonic chain reaction revealed by noise in the Cretaceous quiet zone".NATURE GEOSCIENCE 15.3(2022):15.