Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 22
... matrix . The matrix may also contain patches , veins and isolated grains of albite with minor quartz in some cases . The aggregates are randomly distributed throughout the finer - grained matrix but in a few banded rocks may have a ...
... matrix . The matrix may also contain patches , veins and isolated grains of albite with minor quartz in some cases . The aggregates are randomly distributed throughout the finer - grained matrix but in a few banded rocks may have a ...
Page 41
... matrix ; this leads to think that aegirine veins developed before the complete solidification of the matrix . Biotite is more frequent than phlogopite in these rocks . Lamprophyric Rocks These rocks occur in small isolated outcrops in ...
... matrix ; this leads to think that aegirine veins developed before the complete solidification of the matrix . Biotite is more frequent than phlogopite in these rocks . Lamprophyric Rocks These rocks occur in small isolated outcrops in ...
Page 185
... matrix is composed of very small grains described above , and of clay , sericite , and calcite ( which also is a cementing material ) . The cement is calcareous but at places ferruginous and siliceous . Mineral Composition Quartz ( X ...
... matrix is composed of very small grains described above , and of clay , sericite , and calcite ( which also is a cementing material ) . The cement is calcareous but at places ferruginous and siliceous . Mineral Composition Quartz ( X ...
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