Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
From inside the book
Results 1-3 of 13
Page 27
... Normal or homogenous granites , which are white to light grey , medium to coarse and sub - equigranular to porphyritic . They are rich in feldspars and quartz whereas black tourmaline and other accessories including ores are quite ...
... Normal or homogenous granites , which are white to light grey , medium to coarse and sub - equigranular to porphyritic . They are rich in feldspars and quartz whereas black tourmaline and other accessories including ores are quite ...
Page 95
... normal ' granites with about equal proportions of quartz , K - feldspar ( s ) , and sodic plagioclase as their main minerals . None of the granites contains orthopyroxene and , although some of them may have been metamorphosed ...
... normal ' granites with about equal proportions of quartz , K - feldspar ( s ) , and sodic plagioclase as their main minerals . None of the granites contains orthopyroxene and , although some of them may have been metamorphosed ...
Page 144
... normal diorites . Samples 21 and 12 contain 1.3 and 2.39 % K20 respectively with SiO2 concentrations much more than what is expected for diorites with such K2O in the studied area . They fall , therefore , outside the area of diorites ...
... normal diorites . Samples 21 and 12 contain 1.3 and 2.39 % K20 respectively with SiO2 concentrations much more than what is expected for diorites with such K2O in the studied area . They fall , therefore , outside the area of diorites ...
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