Geological Bulletin, Volume 11University of Peshawar, 1979 - Geology |
From inside the book
Results 1-3 of 74
Page 77
... metamorphic plagioclase is produced by deformation , whilst Chayes ( 1952 ) has shown the close relationship between ... metamorphic plagioclases . Twinning in the metamorphic plagioclases is reportedly much less common than in igneous ...
... metamorphic plagioclase is produced by deformation , whilst Chayes ( 1952 ) has shown the close relationship between ... metamorphic plagioclases . Twinning in the metamorphic plagioclases is reportedly much less common than in igneous ...
Page 86
--1955 . Zone plagioclase in metamorphic rocks . Amer . Mineral . 40 , 327-8 . PARRAS , K. 1958. On the charnockites in the light of a highly metamorphic rock complex in southwestern Finland . Bull . Comm . Geol . Finlande , 181 , 1-137 ...
--1955 . Zone plagioclase in metamorphic rocks . Amer . Mineral . 40 , 327-8 . PARRAS , K. 1958. On the charnockites in the light of a highly metamorphic rock complex in southwestern Finland . Bull . Comm . Geol . Finlande , 181 , 1-137 ...
Page 123
... metamorphic grade from slaty shales to phyllitic schists , sand- stones to quartzites , and semi - to medium- crystalline limestones . Thus the grade of metamorphism in these areas is generally low except in the vicinity of more highly ...
... metamorphic grade from slaty shales to phyllitic schists , sand- stones to quartzites , and semi - to medium- crystalline limestones . Thus the grade of metamorphism in these areas is generally low except in the vicinity of more highly ...
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