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The Main Boundary Thrust (MBT), also known as the Main Boundary Fault, is a discontinuous series of seismic faults in the Himalayas which form the structural boundary between the Outer Himalayas and Lower Himalayan Range.
By lithologic criteria, the Main Central Thrust is defined as the boundary between quartzite and phyllite, from the Lesser Himalayan Sequence; and the orthogneiss biotite-rich schist, which belongs to the Greater Himalayan Crystalline complex. [2] [3] By metamorphic isograd, the Main Central Thrust follows the kyanite isograd. Under this ...
These sediments are thrust over the Sub-himalayan range along the Main Boundary Thrust (MBT). The Lesser Himalaya often appears in tectonic windows (Kishtwar or Larji-Kulu-Rampur windows) within the High Himalaya Crystalline Sequence.
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.
The Main Himalayan Thrust (MHT) ... Main Boundary Thrust (MBT), Main Central Thrust (MCT) and possibly the South Tibetan Detachment. The MHT is the root ...
Main Boundary Thrust: 2000: Himalaya: Thrust: Active (although not uniformly) Main Central Thrust: 2200: Himalaya: Thrust: Active (although not uniformly) 1991 Uttarkashi (M6.8) Main Frontal Thrust: 2000: Himalaya: Thrust: Active: 1505 Lo Mustang (M8.9), 1934 Bihar (M8.0) Main Himalayan Thrust: 2000: Himalaya: Subduction zone (continental ...
The northernmost boundary of the Siwaliks Group is marked by the Main Boundary Thrust (MBT), over which the low-grade metasedimentary rocks of the Lesser Himalaya overlie. The Lesser Himalaya also called the Lower Himalaya, or the Midlands, is a thick (about 7 km) section of para-autochthonous crystalline rocks made up of low- to medium-grade ...
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.