In the Himalayas, you would expect to find thrust faults and reverse faults.

Thrust faults occur when one tectonic plate is pushed underneath another, causing the upper plate to move up and over the lower plate. In the case of the Himalayas, the Indian Plate is being pushed underneath the Eurasian Plate, resulting in the formation of thrust faults.

Reverse faults are similar to thrust faults, but they occur when the upper plate moves downward relative to the lower plate. In the Himalayas, reverse faults are found on the southern side of the range, where the Indian Plate is moving downward beneath the Eurasian Plate.

Reason:

The collision between the Indian and Eurasian plates has resulted in the formation of a large amount of crustal material in the Himalayas. This crustal material is being pushed up and over the Eurasian Plate, creating the high mountains of the Himalayas. The Himalayan mountains formed due to the convergence of the Indian Plate with the Eurasian Plate. The collision caused the Indian Plate to move underneath the Eurasian Plate, resulting in the formation of fold mountains.