Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 101
... tourmaline from Alpurai . Although this mineral is in tiny grains and only of academic interest , its petrographic set - up is the same as those of the emerald occurrences . This paper gives a petrographic account of the tourmaline- and ...
... tourmaline from Alpurai . Although this mineral is in tiny grains and only of academic interest , its petrographic set - up is the same as those of the emerald occurrences . This paper gives a petrographic account of the tourmaline- and ...
Page 103
... tourmaline and , locally , spessartine garnet ( Jan and Symes , 1977 ) . Considered to be metamorphosed shales , the high MnO content ( 2.1 % ) of these rocks has been attributed to volcanic or hydrothermal activity at the time of ...
... tourmaline and , locally , spessartine garnet ( Jan and Symes , 1977 ) . Considered to be metamorphosed shales , the high MnO content ( 2.1 % ) of these rocks has been attributed to volcanic or hydrothermal activity at the time of ...
Page 164
... tourmaline granite with albite , microcline , garnet , etc. , intruding schists on its western margin , is considered by Shams to be a younger derivative . The occurrence of cordierite ( Le Fort et al . , 1980 ) , sillimanite and ...
... tourmaline granite with albite , microcline , garnet , etc. , intruding schists on its western margin , is considered by Shams to be a younger derivative . The occurrence of cordierite ( Le Fort et al . , 1980 ) , sillimanite and ...
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 |
Copyright | |
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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