Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 48
... fields of andesite , dacite and rhyolite . Few samples plot close to the boundary line of field No. 4 and 3b and are described as rhyodacites . Rhyolite A generalized stratigraphic sequence of volcanics in a section along the Gabral ...
... fields of andesite , dacite and rhyolite . Few samples plot close to the boundary line of field No. 4 and 3b and are described as rhyodacites . Rhyolite A generalized stratigraphic sequence of volcanics in a section along the Gabral ...
Page 52
... field and andesite within the tonolite / dacite field of O'Connar ( 1965 ) . Mackenzie and Chappell ( 1972 ) , Peccerillo and Taylor ( 1976 ) and Ewart ( 1979 ) have employed the magnitude of KO variation within the salic volcanics of ...
... field and andesite within the tonolite / dacite field of O'Connar ( 1965 ) . Mackenzie and Chappell ( 1972 ) , Peccerillo and Taylor ( 1976 ) and Ewart ( 1979 ) have employed the magnitude of KO variation within the salic volcanics of ...
Page 73
... field and all samples collected were orientd as to the top of the bed . All field measurements were made with a jacob's staff . The 319 samples were taken to the laboratory and slabs were cut and polished for micro- scopic examination ...
... field and all samples collected were orientd as to the top of the bed . All field measurements were made with a jacob's staff . The 319 samples were taken to the laboratory and slabs were cut and polished for micro- scopic examination ...
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