Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
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Page 79
... Hypersthene , after plagioclase the next most abundant mineral , ranges in composition from En64 to En54 , but in some pyroxenite members it is bronzitic . In the Thak valley noritic rocks , Shams ( 1975 ) has reported a composition ...
... Hypersthene , after plagioclase the next most abundant mineral , ranges in composition from En64 to En54 , but in some pyroxenite members it is bronzitic . In the Thak valley noritic rocks , Shams ( 1975 ) has reported a composition ...
Page 92
... hypersthene - quartz diorites These rocks generally contain hornblende , biotite and , in some , hypersthene as their main mafic minerals ; the clinopyroxene is usually in minor quantity or absent whilst some of the rocks contain only ...
... hypersthene - quartz diorites These rocks generally contain hornblende , biotite and , in some , hypersthene as their main mafic minerals ; the clinopyroxene is usually in minor quantity or absent whilst some of the rocks contain only ...
Page 106
... hypersthene ) is changed to hornblende and quartz due probably to metamorphism . The norite in one case has locally developed thin bands of anorthositic gabbro and pyroxinite alternating with noritic ones . The diorites are composed of ...
... hypersthene ) is changed to hornblende and quartz due probably to metamorphism . The norite in one case has locally developed thin bands of anorthositic gabbro and pyroxinite alternating with noritic ones . The diorites are composed of ...
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Common terms and phrases
abundant amphibole amphibolites andesite anorthosite assemblages associated Bajaur Baltistan bands Baraul belt biotite Bull calc-alkaline Chaudhry Chitral chlorite clinopyroxene coarse-grained composition contain Cretaceous Desio Diwangar epidote fault feldspar foliation Formation garnet granulites Geol Geology Gilgit gneisses gneissose grains granitic rocks Granodiorite granulites green Greenstone Complex grey Group Hazara Himalaya hornblende hypersthene igneous Indo-Pakistan Indus valley intrusions island arc Jan and Mian Jandul Kakar Kalam Karakoram Khan Kohistan layers limestone mafic magma Main Mantle Thrust margins metamorphic metasedimentary rocks metasediments mica Nanga Parbat norites occur opaque minerals orthopyroxene outcrops Pakistan pegmatites peridotites Peshawar Petrography petrology plagioclase plate pyroxene pyroxene granulites pyroxenites quartz diorites quartzites rarely region Reshun rutile schists sequence SiO2 slates southern sphene structure suture zone Swat Kohistan syntaxis Tahirkheli tectonic Tertiary texture thick trend tuffs twinning ultramafic rocks Univ Upper Swat Ushu Gol Utmankhel veins vicinity volcanic rocks whilst xenoliths Yasin