Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
From inside the book
Results 1-3 of 62
Page 46
... present mineralogy appears , again , to be a product of regional metamorphism ( 800 ° -850 ° C , 8-12 Kb ) . They do not seem to be related magmatically to the Jijal granulites and were probably intruded in them as crystalline mushes ...
... present mineralogy appears , again , to be a product of regional metamorphism ( 800 ° -850 ° C , 8-12 Kb ) . They do not seem to be related magmatically to the Jijal granulites and were probably intruded in them as crystalline mushes ...
Page 171
... present in the plagioclase . Hornblende is light green to deep green pleochroic and is partly or completely altered to chlorite and or sphene / magnetite . In some cases hornblende pseudomorphs have developed after pyroxenes . Chlorite ...
... present in the plagioclase . Hornblende is light green to deep green pleochroic and is partly or completely altered to chlorite and or sphene / magnetite . In some cases hornblende pseudomorphs have developed after pyroxenes . Chlorite ...
Page 176
... present . Rarely , the groundmass gives glassy texture . Few textures are micro- dioritic types and these may represent thick volcanic flows unless they are intrusive in nature . In majority of cases the rocks are altered . Plagioclase ...
... present . Rarely , the groundmass gives glassy texture . Few textures are micro- dioritic types and these may represent thick volcanic flows unless they are intrusive in nature . In majority of cases the rocks are altered . Plagioclase ...
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