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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Shivam Sharma posted an Question
September 05, 2020 • 14:30 pm
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30 points
30 points
- CSIR NET
- Earth Sciences
Name the depositional environment of the following sedimentary structures: () lateral accretion surfaces (ii) herringbone cross stratification ii) hummocky cros
Name the depositional environment of the following sedimentary structures: () Lateral accretion surfaces (ii) Herringbone cross stratification ii) Hummocky cross stratification ) Give the names of the following sedimentary structures. ) Fluid-eddy generated erosional scours found at the sole of sandstone beds which are elongate, subconical, bulbous in the up-current direction and flaring out in the down-current direction. (ii) Intrastratal convolutions of laminae that remain confined within the bed and do not affect overlying and underlying beds.
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Rahul kumar
1 (i) Lateral accretion surface: Fluvial environment (especially meandering rivers) (ii) Herringbone cross stratification- Tidal environment (iii) Hummocky cross stratification: Generally forms on continental shelf environment as a result of storm activity (Result of combined flow) 2(i) Flute cast structure (ii) Convolute laminations
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Veer vikram singh
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I) lateral accretion surface or epsilon accretion surface formed in fluvial environment inside a river channel. ii) Herringbone cross stratification forms under tidal environment where the two currents of equal strength periodically flows in the opposite direction ie., towards land and away from land. iii) Hummocky cross stratification forms in storm generated sediment deposits in marine environment.
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pls also confirm the sedimentary structures
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(1) Flute Mark ?
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(2) Convolute Lamination ?
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Sorry for inconvenience. Yes for next question the answer will be flute marks and for the last question the answer will be convolute lamination
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I hope this helps
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Sajan sarthak Best Answer
1 (i) Lateral accretion surface: Fluvial environment (especially meandering rivers) (ii) Herringbone cross stratification- Tidal environment (iii) Hummocky cross stratification: Generally forms on continental shelf environment as a result of (storm activity) 2(i) Flute cast structure (ii) Convolute laminations