印度喜马拉雅西北部拉达克地区的Tso Morari超高压推覆构造

IF 0.2 Q4 GEOLOGY

Journal of Himalayan Earth Sciences Pub Date : 2008-09-23 DOI:10.3126/HJS.V5I7.1337

A. Steck, J. Epard

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引用次数: 0

摘要

提出了左莫拉里超高压推覆体构造发育的构造模式。它被整合到拉达克喜马拉雅的北喜马拉雅推覆体形成的背景中。在该地区，该推覆体从底部到顶部由Tso Morari、Tetraogal、Karzok蛇绿岩、Nyimaling-Tsarap和Mata推覆体组成(Steck et al. 1998, Steck 2003)。北喜马拉雅推覆体主片岩上依次发育L1 ~ L4四条伸展线(Epard and Steck 2008)。L1是在超高压Tso Morari推覆体w向高温挤压过程中形成的，具有从上到E的剪切指标。L2形成于亚洲下方早期印度向北逆冲构造，具有从上到南的剪切指标。它发育在左莫拉里推覆体的顶部以及尼马令构造的底部和前缘

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The Tectonics of the Tso Morari Ultra High Pressure Nappe in Ladakh, NW Indian Himalaya

A tectonic model for the structural development of the Tso Morari ultra-high pressure nappe is proposed. It is integrated into the context of the formation of the North Himalayan nappes of the Ladakh Himalaya. In the area, this stack of nappes is composed by, from base to top, the Tso Morari, Tetraogal, Karzok ophiolite, Nyimaling-Tsarap and Mata nappes (Steck et al. 1998, Steck 2003). Four stretching lineations, L1 – L4, are successively developed on the main schistosity in the North Himalayan nappes (Epard and Steck 2008). L1, with its top-to-the E shear indicators, was formed during the W-directed high temperature extrusion of the ultra high pressure Tso Morari nappe. L2, with its top-to-the S shear indicators, was formed during an early N-directed underthrusting of India below Asia. It is developed in the roof of the Tso Morari nappe as well as at the base and frontal part of the Nyimaling-

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来源期刊

Journal of Himalayan Earth Sciences GEOLOGY-

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： The "Journal of Himalayan Earth Sciences" (JHES) is a biannual journal, managed by the National Centre of Excellence in Geology, University of Peshawar, Pakistan. JHES is recognized by Higher Education Commission (HEC), Pakistan in "X" Category. The JHES entertains research articles relevant to the field of geosciences. Typical geoscience-related topics include sedimentary geology, igneous, and metamorphic geology and geochemistry, geographical information system/remote sensing related to natural hazards, and geo-environmental issues and earth quake seismology, and engineering and exploration geophysics. However, as the journal name implies, the articles addressing research relevant to the above disciplines in the Himalayan region will be given prime importance and relevance.