Migmatites

Melt extraction textures in migmatites from the Tato area, Nanga Parbat massif.
Melt extraction textures in migmatites from the Tato area, Nanga Parbat massif. Partial melting of continental crust was clearly important during the history of the gneisses of the Nanga Parbat massif. But did this feature form over the past few millions of years, during the exhumation of the massif, or is it inherited from a period of anatexis long before Himalayan orogeny?