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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
Which of the following can be used as a way-up indicator as well as a paleocurrent indicator? [msq] (a) graded beddingg (b) planar lamination (c) tangential cro
Which of the following can be used as a way-up indicator as well as a paleocurrent indicator? [MSQ] (A) Graded beddingg (B) Planar lamination (C) Tangential cross-stratification (D) Flute cast 1.
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Rahul kumar
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Answer: Graded Bedding, tangential cross stratification and flute cast can be used as a way-up (younging) indicator. Planar lamination can't be used as a way up indicator because of their symmetrical morphology. Graded Bedding: Fining up sequence. Coarse grain will indicate older direction and fining direction will show progressively younger sequence. Tangential cross stratification: Tangential part of cross bed will indicate older direction whereas truncating part will indicate younger direction. Flute cast: Bulbous nose of flute cast will indicate older direction whereas tapering direction will indicate younger direction.
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Shadab Hussain
How will the graded bedding show palaeocurrent direction?