Geological Bulletin, Volume 12University of Peshawar, 1979 - Geology |
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Page 5
It is also a well known fact that oscillation ripple marks are formed as a result of
disturbance of noncoherent granular sediments (Shrock, 1948, p. 95). Moreover,..
.*' they indicate standing water at the time the ripples were formed" (Dunbar and ...
It is also a well known fact that oscillation ripple marks are formed as a result of
disturbance of noncoherent granular sediments (Shrock, 1948, p. 95). Moreover,..
.*' they indicate standing water at the time the ripples were formed" (Dunbar and ...
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 7
Presence of these cubic pseudomorphs also suggests that the intermittent
flooding took place after a time when already deposited sediments had been
sufficiently indurated. This is indicated by the fact that the perfect boundaries of
the molds ...
Presence of these cubic pseudomorphs also suggests that the intermittent
flooding took place after a time when already deposited sediments had been
sufficiently indurated. This is indicated by the fact that the perfect boundaries of
the molds ...
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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