Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
From inside the book
Results 1-3 of 43
Page 73
... biotite , and , to a lesser extent , garnet are poikiloblastic and inclutions of biotite in the garnet suggest that the biotite is not a retrograde product . Field relations , the occurrence of garnet ( which has not been noticed in the ...
... biotite , and , to a lesser extent , garnet are poikiloblastic and inclutions of biotite in the garnet suggest that the biotite is not a retrograde product . Field relations , the occurrence of garnet ( which has not been noticed in the ...
Page 106
... Biotite is also poikilitic and , in some sections , muscovite and epidote , probably formed at the expense of plagioclase and hornblende , are associated with it . In a few rocks chlorite has developed at the expense of biotite and ...
... Biotite is also poikilitic and , in some sections , muscovite and epidote , probably formed at the expense of plagioclase and hornblende , are associated with it . In a few rocks chlorite has developed at the expense of biotite and ...
Page 135
Biotite and green hornblende are important dark - coloured constituents . Hornblende is usually more abundant than biotite except in specimens 4 , 12 and 21 which contain proportionally more biotite than hornblende . Section 4 also ...
Biotite and green hornblende are important dark - coloured constituents . Hornblende is usually more abundant than biotite except in specimens 4 , 12 and 21 which contain proportionally more biotite than hornblende . Section 4 also ...
Other editions - View all
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