Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
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Page 39
... amphibole is also a common secondary product after garnet and , rarely , after pyroxene . Whether or not all the bluish green amphibole , at least in the garnetites , is secondary is difficult to say . In some rocks the amphibole is ...
... amphibole is also a common secondary product after garnet and , rarely , after pyroxene . Whether or not all the bluish green amphibole , at least in the garnetites , is secondary is difficult to say . In some rocks the amphibole is ...
Page 58
... amphibole is bluish green , green or brownish green but in a few rocks it is light green or distinctly brown . All of the analysed amphiboles are calci- ferous and fall in the general field of hornblendes ; many being rather high in ...
... amphibole is bluish green , green or brownish green but in a few rocks it is light green or distinctly brown . All of the analysed amphiboles are calci- ferous and fall in the general field of hornblendes ; many being rather high in ...
Page 80
... amphibole . In some cases the alteration is mainly to a fibrous amphibole ± iron oxide , while in a few the pyroxene ( especially clinopyroxene ) may be replaced by a hornblendic amphibole . This latter alteration seems to be a higher ...
... amphibole . In some cases the alteration is mainly to a fibrous amphibole ± iron oxide , while in a few the pyroxene ( especially clinopyroxene ) may be replaced by a hornblendic amphibole . This latter alteration seems to be a higher ...
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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