Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
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Page 14
... sphene that appears to be secondary after ilmenite . Rare microveins of calcite or quartz are seen . Somo are tuffaceous with rather high quantity of sericite . In the ignimbritic types , the lithic fragments and crystals always lie in ...
... sphene that appears to be secondary after ilmenite . Rare microveins of calcite or quartz are seen . Somo are tuffaceous with rather high quantity of sericite . In the ignimbritic types , the lithic fragments and crystals always lie in ...
Page 17
... sphene and , in some , clinopyroxeno , a patite , zircon . The plagioclase , at places strained , is zoned andesine and shows selective alteration . The quartz is usually strained and may grow in vermicules around some plagioclase ...
... sphene and , in some , clinopyroxeno , a patite , zircon . The plagioclase , at places strained , is zoned andesine and shows selective alteration . The quartz is usually strained and may grow in vermicules around some plagioclase ...
Page 21
... sphene , and chlorite may be locally produced as secondary products . In rare cases , chlorite and epidote intimately associated and appear to be pseudomorphic after ( ? ) horndlende . are The Dewangar Granite : Towering exposures of ...
... sphene , and chlorite may be locally produced as secondary products . In rare cases , chlorite and epidote intimately associated and appear to be pseudomorphic after ( ? ) horndlende . are The Dewangar Granite : Towering exposures of ...
Contents
Preliminary geology and petrography of Swat Kohistan | 1 |
The geology of the Gandghar Range Distt Hazara N W F | 33 |
Lithological classification and environment of deposition of | 43 |
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abundant altered amphibolites appears associated bands base beds biotite body brown Bull chlorite colour common complex concentration consist contain correlated cover crystalline crystals dark deposits developed diorites distance dykes east eastern epidote exposed extend feet feldspar folded foliation Formation fractures Gandghar Range garnet Geol geology gneisses grades grains granites green grey Group Hazara hornblende inches Indus intrusions iron Kalam Kohistan latter layers light limestone locally located Lower marble material Member metals Middle miles minerals minor natural norites occur outcrop Pakistan pegmatite Peshawar phyllites places plagioclase present probably quartz quartzites rare region result River road rocks samples schists seen sericite shale shear slates solubility solutions southern stream strike structure suggest sulphide Swat temperature thick thin transport types Univ Upper usually valley varieties various veins village volcanic waters western zone