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Nd composition changes mark the Main Central Thrust. For example, an average Nd Epsilon value of −21.5 has been reported in the Lesser Himalayan Sequence while an average Nd Epsilon value of −16 has been reported in the Greater Himalayan Sequence. [6] By strain, the Main Central Thrust is defined as a broad zone which a few kilometers thick.
The three main rock units: the LHS, GHC, and THS all have a hotly debated relationship with each other involving two main fault lines. One is the Main Central Thrust (MCT), and the other is the South Tibetan Detachment (STD). Tectonics geologists agree that the GHC, between the LHS and the THS, is between these two faults and is somehow being ...
HHCS: High Himalayan Cristalline Sequence; ISZ: Indus Suture Zone; KW: Kishtwar Window; LKRW: Larji-Kulu-Rampur Window; MBT: Main Boundary Thrust; MCT: Main Central Thrust; SF: Sarchu Fault; ZSZ: Zanskar Shear Zone. Fig 7: Simplified cross-section of the north-western Himalaya showing the main tectonic units and structural elements by Dèzes ...
The Lesser Himalayan Zone has a lower relief and elevation of the mountains compared to Greater Himalaya. The Lesser Himalaya Sequence (LHS) is bounded by two main thrusts: the Main Central Thrust (MCT) in the north and the Main Boundary Thrust (MBT) in the south. [2] Geographic locations of major formations discussed.
The Sub-Himalayan Sequence is thrust southwestward in the rate of 10±6 mm/yr along the Main Frontal thrust during the Quaternary. [15] Within the sequence, rocks have been thrust and accreted vastly, forming the Sub-Himalayan Thrust Zone in the southwest Himachal Pradesh (Fig. 3). The unit is bounded by the Krol thrust and Tons thrust on top. [13]
The Main Himalayan Thrust (MHT) is a décollement under the Himalaya Range. This thrust fault follows a NW-SE strike , reminiscent of an arc, and gently dips about 10 degrees towards the north, beneath the region.
The Main Frontal Thrust (MFT), also known as the Himalayan Frontal Thrust (HFT), is a geological fault in the Himalayas that defines the boundary between the Himalayan foothills and Indo-Gangetic Plain. [1] The fault is well expressed on the surface thus could be seen via satellite imagery.
Other models would require greater slip along the main central thrust during the Cenozoic orogeny to achieve the present stratigraphical arrangement. Deformation produced by Paleozoic tectonics may have been overprinted by the Cenozoic reactivation of the main central thrust, which result in the lack of old suture zone rocks.