Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
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Page 14
... dyke . Near the contact zone , a number of small , green , porphyritic dykes of dacitic composition intrude both the granite and volcanic rocks ( see also , Matsushita , 1965 , p . 40 and 42 ) . Such dykes also occur in the volcanic ...
... dyke . Near the contact zone , a number of small , green , porphyritic dykes of dacitic composition intrude both the granite and volcanic rocks ( see also , Matsushita , 1965 , p . 40 and 42 ) . Such dykes also occur in the volcanic ...
Page 54
... dykes which were probably the main feedes at the time . This was followed by a phase of granite and diorite dyke intrusions . Next quartz and pegmatite veins formed , followed by a final stage of dolerite dyke intrusions . Extensive ...
... dykes which were probably the main feedes at the time . This was followed by a phase of granite and diorite dyke intrusions . Next quartz and pegmatite veins formed , followed by a final stage of dolerite dyke intrusions . Extensive ...
Page 56
... dykes , respectively . The porphyry dykes were probably the main feeders in the area . 1. Palaeozoic Rocks of Amphibolite Facies . The amphibolite facies rocks are exposed in the south and central parts of the area with minor sheets and ...
... dykes , respectively . The porphyry dykes were probably the main feeders in the area . 1. Palaeozoic Rocks of Amphibolite Facies . The amphibolite facies rocks are exposed in the south and central parts of the area with minor sheets and ...
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