Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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The Nubra-Shyok area lying between Ladakh range in the north and Karakoram range in the south, differs tectono-stratigraphically from the Indus Suture zone. It is characterised by acid to intermediate volcanics with interbedded sediments of Lower Cretaceous age (Khardung volcanics) and an ophiolitic melange consisting of low to medium grade metasediments, lava flows alternations of sandstone, shale conglomerate and bodies of serpentinite, pyroxenite, hornblendite and diorite (Shyok Formation). These are intruded by a tonalite body in the northwestern part of the area. The tectono-stratigraphy of the Nubra-Shyok area suggests that they probably represent the components of a marginal basin in an island-arc system.
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