Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Some of the gabbroic intrusions display in situ differentiation with one intrusion
grading from pyroxenitic ruter margin to leucogabbroic / dioritic interior with a
core of intrusive albitites . Amongst typical alkaline minerals , sodic pyroboles are
...
Some of the gabbroic intrusions display in situ differentiation with one intrusion
grading from pyroxenitic ruter margin to leucogabbroic / dioritic interior with a
core of intrusive albitites . Amongst typical alkaline minerals , sodic pyroboles are
...
Page
INTRODUCTION A number of basic to feldspathic intrusions occur in an area of
about 1 sq . km . along the west bank of the Indus river at the Tarbela damsite (
34° 7 ' ; 72° , 47 ' ) . The intrusions ( sills , dykes and plugs ) are petrographically ...
INTRODUCTION A number of basic to feldspathic intrusions occur in an area of
about 1 sq . km . along the west bank of the Indus river at the Tarbela damsite (
34° 7 ' ; 72° , 47 ' ) . The intrusions ( sills , dykes and plugs ) are petrographically ...
Page 10
The principal outcrop of ( a ) is a plug - like intrusion ( about 10 m . in diameter )
cutting the leuco - gabbroic portion of the semi ... Apart from occurrences as
distinct intrusions , the existence of some amphibole albitites differentiated from
the ...
The principal outcrop of ( a ) is a plug - like intrusion ( about 10 m . in diameter )
cutting the leuco - gabbroic portion of the semi ... Apart from occurrences as
distinct intrusions , the existence of some amphibole albitites differentiated from
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