Geological Bulletin, Volume 5University of Peshawar - Geology |
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Page 13
Overlying this bed is thin bedded to massive , medium - to fine - grained
crystalline limestone which contains varying proportion of primary silica and
magnesia . Grooved and ribbed features are commonly displayed by it on
weathering .
Overlying this bed is thin bedded to massive , medium - to fine - grained
crystalline limestone which contains varying proportion of primary silica and
magnesia . Grooved and ribbed features are commonly displayed by it on
weathering .
Page 14
of primary silica is relatively higher ranging from 10 to 25 per cent in randomly
picked eight samples examined under microscope . The weathered rocks yield
typical grooved and ribbed surfaces . No fossil has been recorded in this
formation .
of primary silica is relatively higher ranging from 10 to 25 per cent in randomly
picked eight samples examined under microscope . The weathered rocks yield
typical grooved and ribbed surfaces . No fossil has been recorded in this
formation .
Page 20
Much of it is after primary ore but some may be from pyroxene . Minor quantities
of quartz have been identified in some of the sections . In very altered samples ,
there is abundant epidote and chlorite , and minor clayey material grown at the ...
Much of it is after primary ore but some may be from pyroxene . Minor quantities
of quartz have been identified in some of the sections . In very altered samples ,
there is abundant epidote and chlorite , and minor clayey material grown at the ...
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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