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abundant Agency Ahmad altered amphibolites appears associated Attock Slates Attock-Cherat bands base basis brown Bull Cherat chlorite clay colour common composed composition considered contains correlated Cretaceous Davies deposits detailed developed diorites District east epidote exposed extends feet feldspar Formation fossils fractures garnet Geol geology Gilgit gneisses grains granitic green grey Hazara Hornblendic Group Ibid India Indus intrusions iron Jour Khan Khyber latter light limestone Long Lower mainly major Manki Marks Martin Masjid material metamorphic Middle miles minerals minor norites northern occur outcrops Panjab Peshawar Phyllite places plagioclase present probably quartz quartzite Range reef region reported River rocks samples sandstone Schistose schists sericite Shah shale shows Silurian southern Stauffer stratigraphic structure suggests Surv Swat Tahirkheli thick thin Thin Section units Univ Upper Valley various veins village weathered West Pakistan western