Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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... sphene in most albitites are indicative of their alkaline affinity . The gabbroic rocks might also be alkaline , as suggested by the abundance of amphiboles ( hornblende , kaersutite , hastingsite ) , low An - content of plagioclase ...
... sphene in most albitites are indicative of their alkaline affinity . The gabbroic rocks might also be alkaline , as suggested by the abundance of amphiboles ( hornblende , kaersutite , hastingsite ) , low An - content of plagioclase ...
Page 10
... sphene ) . The principal outcrop of ( a ) is a plug - like intrusion ( about 10 m . in dia- meter ) cutting the leuco - gabbroic portion of the semi - concentric outcrop . The intru- sion itself is cut by dykes of similar composition ...
... sphene ) . The principal outcrop of ( a ) is a plug - like intrusion ( about 10 m . in dia- meter ) cutting the leuco - gabbroic portion of the semi - concentric outcrop . The intru- sion itself is cut by dykes of similar composition ...
Page 13
... sphene and rutile . Other opaque minerals , i.e. magnetite and pyrite , are restricted to amphibole albitites . Sphene occurs in minor proportions in most of the albitites , however , it reaches up to 6 % in some ( e.g. sphene albitite ...
... sphene and rutile . Other opaque minerals , i.e. magnetite and pyrite , are restricted to amphibole albitites . Sphene occurs in minor proportions in most of the albitites , however , it reaches up to 6 % in some ( e.g. sphene albitite ...
Contents
Petrography of the Loe Shilman Carbonatite Complex Khyber Agency | 29 |
Major Elements Abundance in the Kalam Lavas | 45 |
Sections of the Wargal Limestone Western Salt Range Pakistan | 63 |
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albite albite-carbonate albitites alkaline granites alkaline rocks almandine Amph amphibole andesite apatite associated band beds betafite biotite blueschists brown Bull calc-alkaline calcareous calcite carbonate carbonatite Chaudhry chlorite clinopyroxene complex contain country rocks Desio diorites dolerites dolomite epidote fault feldspar fine-grained Formation gabbroic rocks gabbros Geol Geology gneisses grains granitic belt granitic gneisses granitic rocks granodiorite graphitic schists Himalayas hornblende igneous Indus intrusions island arc Jurassic Kalam volcanic zone Karakoram KASC Kempe and Jan Khyber Agency Kohistan magmatic magnetite Mansehra margin Mauji metamict metamorphism metasediments mica microfacies minerals MODAL COMPOSITION muscovite northern occur outcrop Pakistan pegmatite Peshawar Plain petrography petrology plagioclase pluton Punjab Univ pyrite pyrochlore pyroxenites quartz quartzite range region Reshian rhyolite river samples sandstones schistosity schists sediments sequence shales Shangla Shilman Siwalik sphene subduction suggest Swat syenites Tahirkheli Tarbela tectonic ultramafic University of Peshawar veins Warsak