Records of the Geological Survey of India, Volume 115

alteration Andaman appears assemblage associated bands basalt basic basin batholith beds blocks bodies cent characteristics chemical chert chromite colour complex composition comprises conglomerate contain continuous Cretaceous crystalline cumulate developed diorite Dras Volcanic dunite dyke east eastern emplaced exposed extends facies folded Formation gabbro Geol Geological grains granite green grey harzburgite highly Hill Himalaya India indicate Indus Group intrusive islands Khalsi Ladakh Ladakh Granitoid Lamayuru limestone Lower mafic major mass Member metamorphic mineral nature Nindam Formation northern nummulitic obducted occur oceanic olivine OPHIOLITE BELT ophiolite complex ophiolitic melange peridotite pillow lavas places plagioclase present purple range region represents rocks samples sandstone Sangeluma sector sedimentary sediments seen sequence serpentinite shale sheared Shergol Shyok siltstone southern Srikantia structure studies suite Surv Suture tectonic texture thick thrust tion trend types ultramafic ultramafites unit upper valley varying Zanskar zone