The South Tibetan Detachment System, Rongbuk valley, Tibet

The South Tibetan Detachment System dipping to the North (top-down-to-the North sense of shear), Rongbuk valley, Tibet.

Fossilifeorus Ordovian limestone lying ontop of sillimanite bearing schists (dark rocks below) intruded by leucogranite sills (yellowish rocks). Mount Everest is on the right of the photo 20 km away.

Photo by Rodolfo Carosi