Main Himalayan Thrust

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 dip towards the north, beneath the region. It is the largest active continental megathrust fault in the world.
Overview.
The MHT accommodates crustal shortening of India and Eurasia as a result of the ongoing collision between the Indian and Eurasian plates. Deformation of the crust is also accommodated along splay structures including the Main Frontal Thrust (MFT), Main Boundary Thrust (MBT), Main Central Thrust (MCT) and possibly the South Tibetan Detachment. The MHT is the root detachment of these splays. At this present moment, the MFT and MHT accounts for almost the entire rate of convergence (15-21 mm/yr). This fault defines where the India subcontinent is under thrusted beneath the Himalayan orogenic wedge.
In April 2015, a section of the MHT produced a blind rupture earthquake, killing nearly 9,000 Nepalese.
Associated seismicity.
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The Main Himalayan Thrust and its splay branches has been the source of numerous earthquakes, including some that are indirectly related.