Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
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Page 70
... norites of Dir . The general mode of these rocks is similar to the pyroxenite layers . These rocks have been interpretted to be earlier differentiated pyroxenites of the norite magma some of which were picked up by the magma as screens ...
... norites of Dir . The general mode of these rocks is similar to the pyroxenite layers . These rocks have been interpretted to be earlier differentiated pyroxenites of the norite magma some of which were picked up by the magma as screens ...
Page 105
... norite also occur . The norites and diorites have locally developed into oribicular structure , however , in the former it is much rare . The orbicules are randomly distributed and do not form in a particular part of the rocks . These ...
... norite also occur . The norites and diorites have locally developed into oribicular structure , however , in the former it is much rare . The orbicules are randomly distributed and do not form in a particular part of the rocks . These ...
Page 106
... norite in one case has locally developed thin bands of anorthositic gabbro and pyroxinite alternating with noritic ones ... norites , plagioclase rich shells are also present . The detail petrogra- phy of a noritic orbicule is presented ...
... norite in one case has locally developed thin bands of anorthositic gabbro and pyroxinite alternating with noritic ones ... norites , plagioclase rich shells are also present . The detail petrogra- phy of a noritic orbicule is presented ...
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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