1.1-1.0 Ga) and arc-related magmatism during ca. 1000-750 Ma; and, (3) abundant Meso-Neoproterozoic stromatolite and micropaleoflora fossils. The Lhasa terrane is located at the core of the ...

The volcanic rocks have bimodal silica concentrations and geochemical characteristics of subduction-related island-arc magmatism. Mafic to intermediate rocks comprise a mantle-derived differentiated ...