Electrical resistivity structures and tectonic implications of Main Karakorum Thrust (MKT) in the western Himalayas: NNE Pakistan

What is known about the structure of the Earth is limited, mostly built on theory, and has very low resolution. There are many studies like this one that give us details on the geology and interactions below the crust. These studies are either in the works or already in the public domain. One day these individual snapshots, like puzzle pieces, will give a detailed understanding of the continuous structures below the crust and their interactions. 9 RESE’ would like to see a global 3d model developed to provide a platform for the puzzle pieces to begin to be put together.

 

Highlights
•MT sounding used for studying subsurface electrical structure along Shyok suture.
•Magmatic activities discovered along Shyok suture zone proves that its active.
•A large high conductive body is discovered entrapped in south of the study area.
•We suggest that Kohistan arc is undergoing flat subduction in oscillating condition.

The presence of the conductive zone is an indication of current magmatism or hydrothermal fluids. Maximum low-frequency band data from Fourteen sites with recording periods of 10-2-103seconds was acquired along a profile crossing MKT. Our results reveal the existence of multiple low resistivity zones beneath the region extending from shallow to the depths of more than 100 km. In addition, we discovered another large conductive body towards the south of the study area which could be a result of uprising magmatic plumes generated by the subducting Indian plate along the Indian suture zone and their entrapment in the overlying Kohistan block.

Authors: Shah Syed Tallataf Hussaina, Junmeng Zhaoa, Qibin Xiaoc, Bhatti Zahid Imrana, Nangyal Ghani Khana, Heng Zhanga, Gong Denga, Hongbing Liu
Physics of the Earth and Planetary Interiors
Published Online: 6 February 2018
DOI: https://doi.org/10.1016/j.pepi.2018.02.003

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Electrical resistivity structures and tectonic implications of Main Karakorum Thrust (MKT) in the western Himalayas: NNE Pakistan

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