Geological Bulletin, Volume 12University of Peshawar, 1979 - Geology |
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Page 12
Carbonates and clay are the most important cementing materials in the
sandstone interbeddings , but In some slides iron oxide is also present as
cementing material . Micas are present to the extent of being important detrital (
terrigenous ) ...
Carbonates and clay are the most important cementing materials in the
sandstone interbeddings , but In some slides iron oxide is also present as
cementing material . Micas are present to the extent of being important detrital (
terrigenous ) ...
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 14
Recrystallization of the carbonate minerals is also an important textural feature
observed in a few slides . The process is , however , limited and appears to have
replaced some original pelletoid textural features . Thus only ghost structures are
...
Recrystallization of the carbonate minerals is also an important textural feature
observed in a few slides . The process is , however , limited and appears to have
replaced some original pelletoid textural features . Thus only ghost structures are
...
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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