Indosinian epoch collsional orogenic belt in the Lhasa terrane, Tibet: geochronology, distribution and evolution.

The article relates how the discovery of an eclogite belt northeast of Lhasa, Tibet modifies previous hypotheses about the Lhasa terrane, which was widely considered to form part of the northern margin of Gondwanaland. Geochemistry studies of the eclogite belt indicate that it came from the Paleo-Tethyan oceanic crust during the Carboniferous-Permian periods, suggesting that the Lhasa terrane was formed from an Indosinian epoch collisional orogenesis 240 to 220 million years ago.