Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 41
Various types of veins containing one or more of the constituent minerals of the
syenites are found in the rocks , including fine - grained quartzo - feldspathic
veins . In at least one rock , aegirine veins are slightly off - set and cut by syenite ...
Various types of veins containing one or more of the constituent minerals of the
syenites are found in the rocks , including fine - grained quartzo - feldspathic
veins . In at least one rock , aegirine veins are slightly off - set and cut by syenite ...
Page 89
Alteration phenomenon related to uranium vein formation has been studied by
Butt et al . ( 1978 ) . A summary of alteration due to uraniferous veins is given in
Fig . 2 . Crystalline Magnesite – Talc association : Veins containing up to 98 ...
Alteration phenomenon related to uranium vein formation has been studied by
Butt et al . ( 1978 ) . A summary of alteration due to uraniferous veins is given in
Fig . 2 . Crystalline Magnesite – Talc association : Veins containing up to 98 ...
Page 92
width from a few meters to 200 meters and are in turn cut by calcite veins . The
margins of these veins contain talc which is highly sheared , whereas the main
body of the vein shows no effect of deformation . The localization of these veins ...
width from a few meters to 200 meters and are in turn cut by calcite veins . The
margins of these veins contain talc which is highly sheared , whereas the main
body of the vein shows no effect of deformation . The localization of these veins ...
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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 |
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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