Pre-collisional Himalaya
Pre-collisional Himalaya is the arrangement of the Himalayas, Himalayan rock units before Orogeny, mountain-building processes resulted in the collision of Asia and Indian subcontinent, India. The collision began in the Cenozoic and it is a Type locality (geology), type locality of a Convergent boundary, continental-continental collision. The reconstruction of the initial configuration of the rock units and the relationship between them is highly controversial, and major concerns relate to the arrangements of the different rock units in three dimensions. Several models have been advanced to explain the possible arrangements and petrogenesis of the rock units. Major rock units in Himalaya In the Himalaya, the rock units are conventionally divided into four major sections. From North to South, they are: * Tethyan Himalayan sequence * Greater Himalayan crystalline complex * Palaeozoic-Mesozoic Lesser Himalayan Strata, Lesser Himalayan sequence * Sub-Himalayan sequence The Tethyan ...
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