Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 34
Metamorphism in the area was up to the biotite grade ( below the top ( garnet )
zone of the greenschist facies ) ; such conditions are not capable of producing
parageneses found in the Shilman complex . Similarly , there is no evidence that
the ...
Metamorphism in the area was up to the biotite grade ( below the top ( garnet )
zone of the greenschist facies ) ; such conditions are not capable of producing
parageneses found in the Shilman complex . Similarly , there is no evidence that
the ...
Page 135
Biotite as brown to reddish brown flakes occurs in association with pale green to
green short prismatic prochlorite flakes forming parallel foliation in the rock .
Occasionally biotite contains minute inclusion of magnetite . Muscovite is preset
as ...
Biotite as brown to reddish brown flakes occurs in association with pale green to
green short prismatic prochlorite flakes forming parallel foliation in the rock .
Occasionally biotite contains minute inclusion of magnetite . Muscovite is preset
as ...
Page 136
Biotite Granite Gneiss The rock consists of albite , quartz , biotite , muscovite ,
perthite , microcline and epidote in variable proportion with minor amounts of
rutile , apatite , sphene and limonite . Modal composition of this rock is given in
Table 8 ...
Biotite Granite Gneiss The rock consists of albite , quartz , biotite , muscovite ,
perthite , microcline and epidote in variable proportion with minor amounts of
rutile , apatite , sphene and limonite . Modal composition of this rock is given in
Table 8 ...
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Contents
The Geology and Petrography of the Tarbela Alkaline Complex | 1 |
Petrography of the Loe Shilman Carbonatite Complex Khyber Agency | 29 |
Major Elements Abundance in the Kalam Lavas | 45 |
Copyright | |
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Common terms and phrases
abundant albite albitites alkaline altered amphibole andesite apatite associated band basic beds belt biotite bodies brown Bull calcite carbonate carbonatite chemical chlorite complex composition consist contain deposits described detailed developed diorites dolomite epidote et al fault feldspar field Formation gabbroic Geol Geology gneisses grains granites granitic rocks green Himalayas hornblende igneous indicate Indus intrusions island arc Jurassic Kalam Karakoram Kempe Kohistan Late Limestone locally lower magmatic magnetite major margin metamorphism microfacies minerals minor muscovite normal northern obducted occur origin outcrop Pakistan Peshawar petrography phases plagioclase Plate Pleistocene present pyrite pyrochlore quartz quartzite range region reported river rocks samples sandstones schists sediments sequence sericite shales similar Siwalik sphene structure suggest Swat syenites Table Tahirkheli Tarbela tectonic thick thin Traces Univ University Upper Valley varieties veins volcanic Warsak West zone