![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Hymalayas_86.15103E_31.99726N.jpg/640px-Hymalayas_86.15103E_31.99726N.jpg&w=640&q=50)
Pre-collisional Himalaya
From Wikipedia, the free encyclopedia
Pre-collisional Himalaya is the arrangement of the Himalayan rock units before mountain-building processes resulted in the collision of Asia and India. The collision began in the Cenozoic and it is a type locality of a continental-continental collision.[2] 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.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Hymalayas_86.15103E_31.99726N.jpg/640px-Hymalayas_86.15103E_31.99726N.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Himalaya_tectonostratigraphic_zones_for_Wiki.jpg/640px-Himalaya_tectonostratigraphic_zones_for_Wiki.jpg)