气候变化领域集成服务门户(CCPortal): The Hindu Kush slab break-off as revealed by deep structure and crustal deformation

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DOI	10.1038/s41467-021-21760-w
	The Hindu Kush slab break-off as revealed by deep structure and crustal deformation
	Kufner S.-K.; Kakar N.; Bezada M.; Bloch W.; Metzger S.; Yuan X.; Mechie J.; Ratschbacher L.; Murodkulov S.; Deng Z.; Schurr B.
发表日期	2021
卷号	12 期号:1
英文摘要	Break-off of part of the down-going plate during continental collision occurs due to tensile stresses built-up between the deep and shallow slab, for which buoyancy is increased because of continental-crust subduction. Break-off governs the subsequent orogenic evolution but real-time observations are rare as it happens over geologically short times. Here we present a finite-frequency tomography, based on jointly inverted local and remote earthquakes, for the Hindu Kush in Afghanistan, where slab break-off is ongoing. We interpret our results as crustal subduction on top of a northwards-subducting Indian lithospheric slab, whose penetration depth increases along-strike while thinning and steepening. This implies that break-off is propagating laterally and that the highest lithospheric stretching rates occur during the final pinching-off. In the Hindu Kush crust, earthquakes and geodetic data show a transition from focused to distributed deformation, which we relate to a variable degree of crust-mantle coupling presumably associated with break-off at depth. © 2021, The Author(s).
语种	英语
scopus关键词	buoyancy; continental collision; crustal deformation; Lithosol; lithosphere; slab; subduction zone; tensile stress; Afghanistan; article; earthquake; Hindu; human; tomography; Afghanistan; Hindu Kush
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251555
作者单位	GFZ German Research Centre for Geosciences, Potsdam, Germany; University of Minnesota, Minneapolis, MI, United States; Norwegian Afghanistan Committee, Kabul, Afghanistan; University of Potsdam, Potsdam, Germany; TU Bergakademie Freiberg, Freiberg, Germany; Tajik Academy of Sciences, Dushanbe, Tajikistan; British Antarctic Survey, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Kufner S.-K.,Kakar N.,Bezada M.,et al. The Hindu Kush slab break-off as revealed by deep structure and crustal deformation[J],2021,12(1).
APA	Kufner S.-K..,Kakar N..,Bezada M..,Bloch W..,Metzger S..,...&Schurr B..(2021).The Hindu Kush slab break-off as revealed by deep structure and crustal deformation.Nature Communications,12(1).
MLA	Kufner S.-K.,et al."The Hindu Kush slab break-off as revealed by deep structure and crustal deformation".Nature Communications 12.1(2021).