Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
From inside the book
Results 1-3 of 40
Page 130
Biotite is present as dark grey flakes . X80 . Polarized light . Graphite schists
essentially consist of carbonaceous meterial , quartz and sericite with minor
amounts of opaque minerals and muscovite in varying proportions both in Mauji
and ...
Biotite is present as dark grey flakes . X80 . Polarized light . Graphite schists
essentially consist of carbonaceous meterial , quartz and sericite with minor
amounts of opaque minerals and muscovite in varying proportions both in Mauji
and ...
Page 131
Inclusions of carbonaceous material and opaque minerals are commonly present
within albite porphyroblasts . Zoisite is present as colourless to pale coloured ,
short euhedral aggregates . Rutile is present as fine , pale - coloured , prismatic ...
Inclusions of carbonaceous material and opaque minerals are commonly present
within albite porphyroblasts . Zoisite is present as colourless to pale coloured ,
short euhedral aggregates . Rutile is present as fine , pale - coloured , prismatic ...
Page 136
Albite is present as subhedral to euhedral porphyroblasts generally elongated
along the plane of schistosity . They are altered to sericite and zoisite , showing
portions of unaltered albite characterized by albite twinning . Albite is also
present ...
Albite is present as subhedral to euhedral porphyroblasts generally elongated
along the plane of schistosity . They are altered to sericite and zoisite , showing
portions of unaltered albite characterized by albite twinning . Albite is also
present ...
What people are saying - Write a review
We haven't found any reviews in the usual places.
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 |
Copyright | |
12 other sections not shown
Other editions - View all
Common terms and phrases
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