Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
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Page 86
... Metamorphic and metasomatic processes in the forma- tion of ultramafic rocks . In ' Ultramafic and Related Rocks ' ( P. J. Wyllie , ed . ) . Wiley , New York , 204-12 . SPRY , A. 1969. Metamorphic Textures . Pergamon Press , Oxford ...
... Metamorphic and metasomatic processes in the forma- tion of ultramafic rocks . In ' Ultramafic and Related Rocks ' ( P. J. Wyllie , ed . ) . Wiley , New York , 204-12 . SPRY , A. 1969. Metamorphic Textures . Pergamon Press , Oxford ...
Page 87
... metamorphic texture . Pyroxene granulite cut by hornblende - feldspar pegmatites . The central pegmatite seems to be finer grained on the margins , a feature not common to most of such pegmatites in Swat . Local patches of hornblende ...
... metamorphic texture . Pyroxene granulite cut by hornblende - feldspar pegmatites . The central pegmatite seems to be finer grained on the margins , a feature not common to most of such pegmatites in Swat . Local patches of hornblende ...
Page 89
... rocks during the collision of Asian - Indian landmasses and the Himalayan orogenic - metamorphic episodes . On the basis of texture and type of principal mafic mineral ( s ) , at least four types of quartz diorites can be recognised in ...
... rocks during the collision of Asian - Indian landmasses and the Himalayan orogenic - metamorphic episodes . On the basis of texture and type of principal mafic mineral ( s ) , at least four types of quartz diorites can be recognised in ...
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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