Geological Bulletin, Volume 5University of Peshawar - Geology |
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Page 34
... rarely , it has cracks and along these slight alteration has taken place . In two cases , it grows up to 2 mm in ... rarely surround- ed by white material . It may have a random distribution or be concentrated along certain " bands ...
... rarely , it has cracks and along these slight alteration has taken place . In two cases , it grows up to 2 mm in ... rarely surround- ed by white material . It may have a random distribution or be concentrated along certain " bands ...
Page 41
... rarely , saussuritic material . In no . 13 , all of it is completely masked by a cloudy clayey material , The orthopyroxene is strongly pleochroic ( pink to green ) hypersthene . In some it appears to have simultaneously crystallized ...
... rarely , saussuritic material . In no . 13 , all of it is completely masked by a cloudy clayey material , The orthopyroxene is strongly pleochroic ( pink to green ) hypersthene . In some it appears to have simultaneously crystallized ...
Page 43
represent completely altered amphibole . Hornblende may contain inclusions in some ; more rarely , it grows in poikilitic patches . Quartz is nearly always in small grains that are often strained and have undulose extinction . Rarely ...
represent completely altered amphibole . Hornblende may contain inclusions in some ; more rarely , it grows in poikilitic patches . Quartz is nearly always in small grains that are often strained and have undulose extinction . Rarely ...
Contents
Vol | 1 |
Vol | 5 |
Petrography of the upper part of Kohistan and southwestern Gilgit | 27 |
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Common terms and phrases
abundant Ahmad Ali Masjid altered amphibole amphibolites Attock Attock Slates Attock-Cherat Range bands biotite Bull calcareous calcite carbonate Carboniferous Cherat chlorite colour correlated Cretaceous cross-bedding Darwazai deposits Devonian diorites dolomite epidote exposed feet thick feldspar fossils fractures garnet Geol geology Gilgit Agency gneisses grains granitic green grey Hazara District hornblende Ibid igneous India Indus River intrusions Jamrud Jan and Tahirkheli Jour Khan Khattak Khewra Formation Khwar Khyber Agency Kohat Kohistan Landikotal Slate limestone lithological Manki Slate Masjid Formation metamorphism metasedimentary miles minerals minor Mohmand Agency muscovite nala norites Nowshera occur outcrops Palaeozoic Paleocene Panjab Univ pegmatites Peshawar phyllites plagioclase pyroxene quartz quartzite reef region Rehman Ripple Marks rocks Salt Range sandstone Schistose Group schists sedimentary Shagai Shagai Limestone Shah Dheri shale Silurian Siluro-Devonian slaty shale Stauffer stratigraphic structures Surv Tertiary thin bedded Thin Section ultramafic veins weathered West Pakistan yellowish