Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
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Page 21
... grain is totally devoid of it . The intergrown quartz grains are optically continuous in most cases and contained in a single albite grain , but in a few cases more than one albite grain share the optically continuous quartz vermicules ...
... grain is totally devoid of it . The intergrown quartz grains are optically continuous in most cases and contained in a single albite grain , but in a few cases more than one albite grain share the optically continuous quartz vermicules ...
Page 136
... grains of porphyroblasts . Furthermore , in Reshian , albite and mic- rocline porphyroblasts contain dust like opaque inclusions and show myrmekitic growth near the grain boundary . Porphyroblasts of microcline are also present in Mauji ...
... grains of porphyroblasts . Furthermore , in Reshian , albite and mic- rocline porphyroblasts contain dust like opaque inclusions and show myrmekitic growth near the grain boundary . Porphyroblasts of microcline are also present in Mauji ...
Page 185
... grains . The grains are mostly of quartz , chert , rock frag- ments and mica . Grains of garnet , epidote , pyribole and tourmaline may also occur . The matrix is composed of very small grains described above , and of clay , sericite ...
... grains . The grains are mostly of quartz , chert , rock frag- ments and mica . Grains of garnet , epidote , pyribole and tourmaline may also occur . The matrix is composed of very small grains described above , and of clay , sericite ...
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