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首页> 外文期刊>Earth, planets and space: EPS >Crustal structure in the Siwalik Himalayas using magnetotelluric studies
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Crustal structure in the Siwalik Himalayas using magnetotelluric studies

机译：使用大地电磁研究的西瓦里克喜马拉雅山地壳结构

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Tectonics in the Himalayan foothills is a result of the compressional forces active since the collision between indian and Eurasian plates and is best understood as a combination of thin skin tectonics and the basement level faulting. In order to delineate the depth extent of various thrusts and faults, wide band Magnetotelluric (MT) studies were conducted at 17 stations over the Una-Mandi profile located in the Lesser Himalayas. These studies indicate that the Palampur thrust may be a composite of two thrust zones which merge together on the south of the MT profile and extends to depths of about 8 km. The Lambagraon syncline flanked by the Sarkaghat anticline on the Ne and the Bahl anticline to the SW, is about 10 km deep. The crust is underlain by a conductive layer with a resistivity of about 100 Ω - m at depth of about 50 km below the Palampur thrust and Sarkaghat anticline. This layer is delineated at shallower depths of about 35 km below the Lambagraon syncline and also on the NE towards the main boundary thrust.
机译：喜马拉雅山麓构造是自印度板块与欧亚板块碰撞以来活跃的压力作用的结果，人们最好将其理解为薄薄的皮肤构造与基底层断层的结合。为了描述各种逆冲和断层的深度范围，在位于小喜马拉雅山的Una-Mandi剖面上的17个台站进行了宽带大地电磁（MT）研究。这些研究表明，Palampur逆冲可能是两个逆冲带的组合，它们在MT剖面的南部合并在一起，延伸到约8 km的深度。 Lambagraon向斜线的两侧约有10公里深，其两侧为Ne上的Sarkaghat背斜和西南部的Bahl背斜。地壳下面是一个导电层，该导电层在Palampur推力和Sarkaghat背斜下方约50 km的深度处具有约100Ω-m的电阻率。该层在兰巴干向斜线以下约35 km的较浅深度处以及东北向主边界推力的地方划定。

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