Geological Bulletin, Volume 5University of Peshawar - Geology |
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Page 20
Mineralogically , they are composed of plagioclase and augitic pyroxene with
accessory iron ore , although alteration in many of them has produced various
new minerals . The rocks in thin sections usually display ophitic to sub - ophitic
texture ...
Mineralogically , they are composed of plagioclase and augitic pyroxene with
accessory iron ore , although alteration in many of them has produced various
new minerals . The rocks in thin sections usually display ophitic to sub - ophitic
texture ...
Page 42
The nearby plagioclase may be kaolinized as in no . 16 . Section 20 was cut
along the contact of a vein and norite . The former is composed of abundant
epidote and chlorite , plagoiclase ( ? secondary ) and minor iron oxide . Epidote
is more ...
The nearby plagioclase may be kaolinized as in no . 16 . Section 20 was cut
along the contact of a vein and norite . The former is composed of abundant
epidote and chlorite , plagoiclase ( ? secondary ) and minor iron oxide . Epidote
is more ...
Page 102
They are foliated and composed essentially of hornblende , plagioclase and
epidote . Some are highly weathered , giving rise to a spongy appearance due to
greater stability of some minerals towards chemical weathering ; others are
highly ...
They are foliated and composed essentially of hornblende , plagioclase and
epidote . Some are highly weathered , giving rise to a spongy appearance due to
greater stability of some minerals towards chemical weathering ; others are
highly ...
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abundant Agency Ahmad altered amphibolites appears associated Attock Slates Attock-Cherat bands base basis brown Bull Cherat chlorite clay colour common composed composition considered contains correlated Cretaceous Davies deposits detailed developed diorites District east epidote exposed extends feet feldspar Formation fossils fractures garnet Geol geology Gilgit gneisses grains granitic green grey Hazara Hornblendic Group Ibid India Indus intrusions iron Jour Khan Khyber latter light limestone Long Lower mainly major Manki Marks Martin Masjid material metamorphic Middle miles minerals minor norites northern occur outcrops Panjab Peshawar Phyllite places plagioclase present probably quartz quartzite Range reef region reported River rocks samples sandstone Schistose schists sericite Shah shale shows Silurian southern Stauffer stratigraphic structure suggests Surv Swat Tahirkheli thick thin Thin Section units Univ Upper Valley various veins village weathered West Pakistan western