Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
From inside the book
Results 1-3 of 12
Page 66
... members , and anorthosites and pyroxenites for the felsic and ultramafic members , respectively , purely for descriptive reasons and without genetic implications . This paper presents a detailed account of the field features and ...
... members , and anorthosites and pyroxenites for the felsic and ultramafic members , respectively , purely for descriptive reasons and without genetic implications . This paper presents a detailed account of the field features and ...
Page 76
... members to Ans4 in the basic members . In some , compositions as calcic as An6o have been found from extinction angles . ( The An content determined by extinction angle has been found to be slightly higher than that determined from ...
... members to Ans4 in the basic members . In some , compositions as calcic as An6o have been found from extinction angles . ( The An content determined by extinction angle has been found to be slightly higher than that determined from ...
Page 81
... members The pyroxenite and anorthosite members are similar to the noritic rocks except in their content of mafic / felsic minerals . The anorthosites usually carry some quartz while the pyroxenites ( commonly websterites but in some ...
... members The pyroxenite and anorthosite members are similar to the noritic rocks except in their content of mafic / felsic minerals . The anorthosites usually carry some quartz while the pyroxenites ( commonly websterites but in some ...
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