Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 49
MAJOR ELEMENT CHEMISTRY Major element chemical analyses of dacite and
rhyolite alongwith andesite are presented in Table 1 . It includes 14 new
analyses of salic eruptives ( SiO2 > 60 % ) as well as analyses originally
published by ...
MAJOR ELEMENT CHEMISTRY Major element chemical analyses of dacite and
rhyolite alongwith andesite are presented in Table 1 . It includes 14 new
analyses of salic eruptives ( SiO2 > 60 % ) as well as analyses originally
published by ...
Page 59
Within the volcanic rocks developed in these regions well - defined chemical
variations of different magnitude in each region are often recognized even within
a given compositional type . McBirney ( 1969 ) , Forbes et al . ( 1969 ) and Yoder
...
Within the volcanic rocks developed in these regions well - defined chemical
variations of different magnitude in each region are often recognized even within
a given compositional type . McBirney ( 1969 ) , Forbes et al . ( 1969 ) and Yoder
...
Page 113
For the purpose of chemical analyses , the radioactive minerals were also hand
picked under a binocular microscope . Since it was not possible to differentiate
between metamict non - metamict and partially metamict grains under the ...
For the purpose of chemical analyses , the radioactive minerals were also hand
picked under a binocular microscope . Since it was not possible to differentiate
between metamict non - metamict and partially metamict grains under the ...
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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