Geological Bulletin, Volume 6University of Peshawar, 1971 - Geology |
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Page 9
The rocks also have fractures, microfractures, and shear zones, that may
brecciate the rotk for many feet, with greenish colour due to secondary chlorite
amj hibole and epidote. In some, the middle part is crushed fine. Slickensides, at
places ...
The rocks also have fractures, microfractures, and shear zones, that may
brecciate the rotk for many feet, with greenish colour due to secondary chlorite
amj hibole and epidote. In some, the middle part is crushed fine. Slickensides, at
places ...
Page 27
Nearly all of them pinchout in short distances of a few hundred yards or less.
Many of them are banded; besides grey and white, brownish and mixed-colour
bands also occur. The rocks are generally uniform in texture but many are
fractured ...
Nearly all of them pinchout in short distances of a few hundred yards or less.
Many of them are banded; besides grey and white, brownish and mixed-colour
bands also occur. The rocks are generally uniform in texture but many are
fractured ...
Page 115
Graphite mineralization appears to be the result of hydrothermal or gaseous
emenations and occurs mainly in thin fractures and openings in the igneous
rocks. Thus, it commonly forms thin lamellar coatings and films of a few
millimetres ...
Graphite mineralization appears to be the result of hydrothermal or gaseous
emenations and occurs mainly in thin fractures and openings in the igneous
rocks. Thus, it commonly forms thin lamellar coatings and films of a few
millimetres ...
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Contents
Preliminary geology and petrography of Swat Kohistan | 1 |
No 1 December | 3 |
The geology of the Gandghar Range Distt Hazara N W F | 33 |
8 other sections not shown
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Common terms and phrases
abundant acid amphibolites associated Bajaur bands beds biotite brines Bull calcite carbonates chloride complexes chlorite coarse-grained colour concentration correlated crystals dark deposits Deshai developed Dewangar diorites dolerite dolomite dykes east eastern epidote exposed extend feet thick feldspar fluid inclusions folded foliation fractures Gabral Gandghar Range garnet Geol geology glauconite gneisses gneissose grades grains granites graphite grey Hazara hornblende hornblendites hydrothermal solutions hypersthene igneous ilmenite Indus intrusions Kalam Group Khan Khussak Formation Kohistan layers limestone locally magma magnetite marble Matiltan Matsushita metals metamorphism miles mineralizing solutions Misri Banda Quartzite norites Nowshera occur outcrop Pakistan pegmatite pegmatite veins peridotite Peshawar phenocrysts phyllites plagioclase plutonic porphyritic pyrite pyroxene pyroxenites quartz quartzite region samples sandstone schists sediments sericite shale sheared Sirikot Sirikot Slates solubility sphalerite sphene sulphide sulphur Surv Swat Kohistan Tahirkheli temperature Tertiary thin transport Univ Upper Swat Ushu usually Utror valley volcanic rocks waters well-developed zone