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
...
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
...
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 ) ...
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 ) ...
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
fiakes ...
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
fiakes ...
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Contents
1979 No | 1 |
Khewra Gorge Khewra Jehluu District | 11 |
Khewra Gorge Khewra Jehlum District | 21 |
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Common terms and phrases
abundant anhedral appears Baghanwala Formation basal base basin biotite brown Bull calcarenite calcareous calcareous cement calcite Cambrian carbonate carbonate and limonite carbonate minerals Cementing material characterized chlorite circulated clastic clay clear colour common Compactibility constituents contains corroded boundaries crystals cubic currents deposition dominant Early effects environments exposed field formed fossils Geol Geology glauconite important India indicate industries interbeddings intercalations iron oxide Jutana Dolomite KHAN Khewra Gorge laminated layers less limestone limonite maroon material is carbonate matrix medium metamorphism meters mica micaceous minerals noticed observed occurs olive origin Pakistan Peshawar pigmentation places porosity present primary pseudomorphs Punjab quartz grains recrystallized result ripple marks rocks rounded Saline Salt Range sand sandstone sector sedimentary sediments seen shale shallow slides solution strata stratification structures stylolites suggestive texture thick thin bedded Thin Section tion underlying Univ upper various vary warm writers York