Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
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Page 61
... zone , and locally it become major mineral . Near the contacts the diorites are always predminantly gneissose and become granular away from the contacts . The contact relations vary from sharp to transitional . The gradation zone , near ...
... zone , and locally it become major mineral . Near the contacts the diorites are always predminantly gneissose and become granular away from the contacts . The contact relations vary from sharp to transitional . The gradation zone , near ...
Page 101
... zone of maximum leaching which is accompanied by the procipitation of weak bases like Al , Fe , Ti , etc. In this zone , however , leaching sharply predominates over precipitation . The third and last is the zone of fading acidity of ...
... zone of maximum leaching which is accompanied by the procipitation of weak bases like Al , Fe , Ti , etc. In this zone , however , leaching sharply predominates over precipitation . The third and last is the zone of fading acidity of ...
Page 107
... zone . The base metals are largely in the form of chloride complexes . On the other hand , in an upper zone , meteorio waters circulate in rocks actively . There may be mixing in an intermediate zone due to convection or diffusion ...
... zone . The base metals are largely in the form of chloride complexes . On the other hand , in an upper zone , meteorio waters circulate in rocks actively . There may be mixing in an intermediate zone due to convection or diffusion ...
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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Common terms and phrases
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