Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
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Page 62
... pegmatite veins increases northwards . About two miles east of Barwa the country rock is overshadowed by the pegmatite - quartz vein swarms . The quartz veins are usually later than the pegmatites which themselves are cut by dolerite ...
... pegmatite veins increases northwards . About two miles east of Barwa the country rock is overshadowed by the pegmatite - quartz vein swarms . The quartz veins are usually later than the pegmatites which themselves are cut by dolerite ...
Page 66
... pegmatites , in which the hornblende crystals are oriented across the length of the pegmatite veins suggesting extremely high hydrostatic pressures . Some of the hornblende crystals are as large as one foot in size . As pointed out ...
... pegmatites , in which the hornblende crystals are oriented across the length of the pegmatite veins suggesting extremely high hydrostatic pressures . Some of the hornblende crystals are as large as one foot in size . As pointed out ...
Page 70
... pegmatite vein swarms and last of all quartz vein swarms with copper mineralization , containing pockets of chalcopyrite , and bornite . The pegmatite and quartz vejn stage was accompanied by intense shearing movements . Besides these ...
... pegmatite vein swarms and last of all quartz vein swarms with copper mineralization , containing pockets of chalcopyrite , and bornite . The pegmatite and quartz vejn stage was accompanied by intense shearing movements . Besides these ...
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