Geological Bulletin, Volume 14University of Peshawar, 1981 - Geology |
From inside the book
Results 1-3 of 32
Page 20
The other variety is kaersutite having an extinction angle of 10° and a pleochroic
scheme of a = straw yellow , B = reddish brown and y = deep reddish brown . A
less common amphibole with a = colourless , B = light green and y = bluish green
...
The other variety is kaersutite having an extinction angle of 10° and a pleochroic
scheme of a = straw yellow , B = reddish brown and y = deep reddish brown . A
less common amphibole with a = colourless , B = light green and y = bluish green
...
Page 143
The brown sandstones carry a scattered basal pebble lag composed of brown
quartzite and igneous clasts , possibly derived from the ' Tanawal ( or equivalent )
quartzites , and basic igneous pebbles , possibly derived form the Panjal Traps .
The brown sandstones carry a scattered basal pebble lag composed of brown
quartzite and igneous clasts , possibly derived from the ' Tanawal ( or equivalent )
quartzites , and basic igneous pebbles , possibly derived form the Panjal Traps .
Page 145
The paleocurrent data serve to clearly separate the white and the brown
sandstones . It is evident that the early white sandstones were deposited by rivers
which trended NE and that these rivers were gradually replaced by S to SSW
flowing ...
The paleocurrent data serve to clearly separate the white and the brown
sandstones . It is evident that the early white sandstones were deposited by rivers
which trended NE and that these rivers were gradually replaced by S to SSW
flowing ...
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