Bill Kidd at tree line in the Layue valley on the north flank of Gyala Peri, SE Tibet, 21 October 2003. Gneisses of the Namche Barwa-Gyala Peri antiform, exhumed in just the past 1-2 million years from mid-crustal (20-25Km) depths, form the rock exposures seen in the northeastern flank of Gyala Peri in this image. Photo courtesy of Peter Koons © 2003.

For some details on the geology, and the tectonics of the Namche Barwa-Gyala Peri massif, see: Craw, D., P. O. Koons, P. K. Zeitler, and W.S.F.Kidd, 2005. Fluid evolution and thermal structure in the rapidly exhuming gneiss complex of Namche Barwa–Gyala Peri, eastern Himalayan syntaxis. J. Metamorphic Geol., 23, 829–845. PDF file


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