Geological Bulletin, Volume 11

abundant altered amphibole amphibolites anorthosite appears associated bands basic bedded belt biotite bodies Bull Chitral clinopyroxene common complex composition considered contain dark developed diorites east epidote exposed extend fault feldspar foliation Formation garnet Geol Geology Gilgit gneisses gneissose grains granitic granulites green grey Group Hazara Himalaya hornblende igneous inclusions Indus intrusions Jijal Kalam Khan Kohistan layers less light limestone locally located lower major margins mass material medium metamorphic Mian Middle minerals minor Nanga Parbat norites northern occur opaque origin Pakistan pegmatites Peshawar places plagioclase plate present probably pyroxene pyroxene granulites pyroxenites quartz quartzites range rare region reported result rocks schists sequence sericite slates southern stream structure studies suggest Swat Tahirkheli tectonic thick thin thrust traces trend twinning ultramafic Univ upper usually valley veins volcanic western zone ܘ ܘ ܘ