Geological Bulletin, Volume 5University of Peshawar - Geology |
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Page 28
... composition determi- nation . Since norites are abundant , fresh , and previously undescribed , many of the sections were cut from these in order to get more informations on their mineral composition . Most of the area under discussion ...
... composition determi- nation . Since norites are abundant , fresh , and previously undescribed , many of the sections were cut from these in order to get more informations on their mineral composition . Most of the area under discussion ...
Page 55
... COMPOSITION Table II gives the mineralogical composition of the Khewra Formation . The percentages of the various components of the sandstone were calculated with the help of a point counter . About 600 points were counted in each slide ...
... COMPOSITION Table II gives the mineralogical composition of the Khewra Formation . The percentages of the various components of the sandstone were calculated with the help of a point counter . About 600 points were counted in each slide ...
Page 104
... composition . The sample is from a small intrusive body , associated with the gneisses , in the north of the area . It is composed of labradorite ( partially altered , some twisted and / or zoned ) , hornblende ( pale brown to brownish ...
... composition . The sample is from a small intrusive body , associated with the gneisses , in the north of the area . It is composed of labradorite ( partially altered , some twisted and / or zoned ) , hornblende ( pale brown to brownish ...
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