Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
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Page 57
... composition of ten amphibolites is given in Table 1 ; in addition , Ahmed and Ahmed ( 1975 ) have presented the ... composition . Modal composition of The main mineralogical difference in the amphibolites of the southern belt and those ...
... composition of ten amphibolites is given in Table 1 ; in addition , Ahmed and Ahmed ( 1975 ) have presented the ... composition . Modal composition of The main mineralogical difference in the amphibolites of the southern belt and those ...
Page 76
... composition seems to have a restricted range . Determination in 60 rocks of maximum symmetrical extinction angles in sections normal to ( 010 ) , and measurement of the a refractive index in ten of these 60 plagioclases , suggest that ...
... composition seems to have a restricted range . Determination in 60 rocks of maximum symmetrical extinction angles in sections normal to ( 010 ) , and measurement of the a refractive index in ten of these 60 plagioclases , suggest that ...
Page 79
... composition than the coexisting hypersthene , clustering around Mg37 Fe17 Ca46 in the augite - salite fields . Average composition of the clinopyroxene from Thak valley , determined optically by Shams ( 1975 ) , is En45 FS14 W041 . The ...
... composition than the coexisting hypersthene , clustering around Mg37 Fe17 Ca46 in the augite - salite fields . Average composition of the clinopyroxene from Thak valley , determined optically by Shams ( 1975 ) , is En45 FS14 W041 . The ...
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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