Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 5
... pyroxenites , amphibole pyroxenites , mela- , normal- , leuco- gabbros , and diorites . In thin sections the texture is predominantly medium- grained , sub - equigranular and hypidiomorphic . Local variations to fine - grained , sub ...
... pyroxenites , amphibole pyroxenites , mela- , normal- , leuco- gabbros , and diorites . In thin sections the texture is predominantly medium- grained , sub - equigranular and hypidiomorphic . Local variations to fine - grained , sub ...
Page 6
... pyroxenites up to 30 % . Olivine is found only in a few mela - gabbros and olivine - amphibole pyroxenites , in the latter it forms the third constituent in order of abundance . Quartz is sub- ordinate throughout the gabbroic series and ...
... pyroxenites up to 30 % . Olivine is found only in a few mela - gabbros and olivine - amphibole pyroxenites , in the latter it forms the third constituent in order of abundance . Quartz is sub- ordinate throughout the gabbroic series and ...
Page 16
... pyroxenites , mela- , normal - gabbros , and diorites , suggest the compositional range from An to An " . It is noticeable that the An- content gradually decreases from the pyroxenites to diorites . In all the four samples the An ...
... pyroxenites , mela- , normal - gabbros , and diorites , suggest the compositional range from An to An " . It is noticeable that the An- content gradually decreases from the pyroxenites to diorites . In all the four samples the An ...
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 |
Copyright | |
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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