Geological Bulletin, Volume 12University of Peshawar, 1979 - Geology |
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Page 2
The individual layers formed as a result of stratification are termed as strata or
beds. The term stratum is applied for any type and thickness of the layers while
the term bed is restricted to layer greater than 1 cm. In thickness. The strata less
than ...
The individual layers formed as a result of stratification are termed as strata or
beds. The term stratum is applied for any type and thickness of the layers while
the term bed is restricted to layer greater than 1 cm. In thickness. The strata less
than ...
Page 6
"There are four main mechanisms that may cause solt sediment deformation; (a)
gravity forces acting on a succession of strata showing a reverse density gradient
, i. e. with denser sediment layers overlying less dense layers; (b) liquefaction of ...
"There are four main mechanisms that may cause solt sediment deformation; (a)
gravity forces acting on a succession of strata showing a reverse density gradient
, i. e. with denser sediment layers overlying less dense layers; (b) liquefaction of ...
Page 24
In upper layers extensive oxidation has resulted in the complete staining of biotite
flakes. In many cases it becomes difficult to identify biotite, and only the
pseudomorphs of biotite are noticed. Chlorite occurs as small green pleochroic
flakes, ...
In upper layers extensive oxidation has resulted in the complete staining of biotite
flakes. In many cases it becomes difficult to identify biotite, and only the
pseudomorphs of biotite are noticed. Chlorite occurs as small green pleochroic
flakes, ...
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Contents
and the Baghanwala Formation | 1 |
Khewra Gorge Khewra Jehlutn District | 11 |
Mineral Poliey with special reference | 41 |
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Common terms and phrases
anhedral Baghanwala Formation basal basin biotite calcarenite calcareous cement calcilutite texture calcisiltite texture calcite Cambrian carbonate and limonite carbonate matrix carbonate minerals Cementing material characterized by calcarenite chlorite clayey cement colour Compactibility corroded boundaries cross-bedding cubic pseudomorphs deposition detrital Dolomitic limestone environments feldspar fossils freely circulated Geology of India Ghundai Sar glauconite granoblastic highly corroded indicate interbeddings intercalations iron oxide iron oxide pigmentation Jehlum KHAN Khewra Gorge Khussak Formation Khyber Agency laminated layers less corroded long shore currents marine water maroon material is carbonate metamorphism mica micaceous mineral sector Minerals are anhedral mud cracks Muscovite non-clastic observed Pakistan Peshawar PETROGRAPHY Plagioclase porosity pseudomorphs Punjab quartz quartz grains recrystallized ripple marks rock texture salt crystals Salt Range sandstone sedimentary rocks sedimentary structures sediments shale siltstone slides stable shelf area strata stratification stratigraphic stratigraphic levels stylolites texture is metamorphic thin bedded Thin Section Tobra Formation underlying Jutana Dolomite Univ upper worm burrows