Lithostratigraphy of the Karakar Pass Section, South of Main Mantle Thrust, Swat NW Pakistan
Abstract
The Karakar Pass section marks the northern edge of Indo-Pakistan plate. It is predominantly composed of highly deformed and metamorphosed Cambrian and Tertiary (?) granitic rocks and Paleozoic (?) metasediments. The granitic rocks of the area are divided into augen gneisses and tourmaline granites, each belonging to a different age group. The metasedimentary rocks are grouped into Alpurai schists and Nikanai Ghar Marbles.
The augen gneisses are unconformably overlain by the Alpurai schists and tourmaline granites occur as an intrusive sill like body into the augen gneisses and the surrounding quartzose metasediments. The Alpurai schists includes three members: (1) quartz-mica schist and amphibolites, (2) calc-schists and schistose marbles, and (3) graphitic schist. The whole sequence is terminated in southeast by the Nikanai Ghar Fault which juxtaposes these units against the Nikanai Ghar Marbles.
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