Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 15
... brown and lined with opaque brown material along cleavages and grain boundaries . Quartz and albite reach up to 8 % each . Rarely a clear variety of calcite with albite inclusions sur- rounds quartz and brown - stained carbonate ...
... brown and lined with opaque brown material along cleavages and grain boundaries . Quartz and albite reach up to 8 % each . Rarely a clear variety of calcite with albite inclusions sur- rounds quartz and brown - stained carbonate ...
Page 20
... brown and y = deep reddish brown . A less common amphibole with a = colourless , B light green and Y = bluish green and extinction angle of 22 ° is found in some rocks , either surrounding the brown hornblende or in independent grains ...
... brown and y = deep reddish brown . A less common amphibole with a = colourless , B light green and Y = bluish green and extinction angle of 22 ° is found in some rocks , either surrounding the brown hornblende or in independent grains ...
Page 143
Closer inspection of the sanastones reveal further distinguishing characteris- tics . The brown sandstones carry a scattered basal pebble lag composed of brown quartzite and igneous clasts , possibly derived from the Tanawal ( or ...
Closer inspection of the sanastones reveal further distinguishing characteris- tics . The brown sandstones carry a scattered basal pebble lag composed of brown quartzite and igneous clasts , possibly derived from the Tanawal ( or ...
Contents
Petrography of the Loe Shilman Carbonatite Complex Khyber Agency | 29 |
Major Elements Abundance in the Kalam Lavas | 45 |
Sections of the Wargal Limestone Western Salt Range Pakistan | 63 |
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albite albite-carbonate albitites alkaline granites alkaline rocks almandine Amph amphibole andesite apatite associated band beds betafite biotite blueschists brown Bull calc-alkaline calcareous calcite carbonate carbonatite Chaudhry chlorite clinopyroxene complex contain country rocks Desio diorites dolerites dolomite epidote fault feldspar fine-grained Formation gabbroic rocks gabbros Geol Geology gneisses grains granitic belt granitic gneisses granitic rocks granodiorite graphitic schists Himalayas hornblende igneous Indus intrusions island arc Jurassic Kalam volcanic zone Karakoram KASC Kempe and Jan Khyber Agency Kohistan magmatic magnetite Mansehra margin Mauji metamict metamorphism metasediments mica microfacies minerals MODAL COMPOSITION muscovite northern occur outcrop Pakistan pegmatite Peshawar Plain petrography petrology plagioclase pluton Punjab Univ pyrite pyrochlore pyroxenites quartz quartzite range region Reshian rhyolite river samples sandstones schistosity schists sediments sequence shales Shangla Shilman Siwalik sphene subduction suggest Swat syenites Tahirkheli Tarbela tectonic ultramafic University of Peshawar veins Warsak