Geological Bulletin, Volume 12University of Peshawar, 1979 - Geology |
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Page 12
Coating of the clastic grains by iron oxide is common , but abundant in the upper
part . It is because of this iron oxide coating that the thin sections , cut from field
samples , from the upper part appear brownish - red in colour . Carbonates and ...
Coating of the clastic grains by iron oxide is common , but abundant in the upper
part . It is because of this iron oxide coating that the thin sections , cut from field
samples , from the upper part appear brownish - red in colour . Carbonates and ...
Page 13
This resulted in the removal of carbonates and only clastic quartz grains were left
. Presence of clay was also confirmed by this process . In rare cases iron oxide
was observed as an important cementing material instead of calcareous cement .
This resulted in the removal of carbonates and only clastic quartz grains were left
. Presence of clay was also confirmed by this process . In rare cases iron oxide
was observed as an important cementing material instead of calcareous cement .
Page 27
0 Sandstone , brownishred , fine grained , quartz grains subangular , thin bedded
, micaceous , abundant iron oxide pigmentation , near the top contains green
shaly intercalations , loosely cemeuted , ealcitic and iron oxide ( ? ) cement ...
0 Sandstone , brownishred , fine grained , quartz grains subangular , thin bedded
, micaceous , abundant iron oxide pigmentation , near the top contains green
shaly intercalations , loosely cemeuted , ealcitic and iron oxide ( ? ) cement ...
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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