Harshvardhan Sharma posted an Question
January 30, 2021 • 19:42 pm 30 points
  • IIT JAM
  • Geology (GG)

8. tabular cross-bedding is formed due to the migration of (a) 2d dunes only (c) 3d ripples only (b) 2d ripples and dunes (d) 3d ripples and dunes

8. Tabular cross-bedding is formed due to the migration of (A) 2D dunes only (C) 3D ripples only (B) 2D ripples and dunes (D) 3D ripples and dunes

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    Saurabh 1 Best Answer

    Tabular cross bedding is usually formed by migration of 2D bedforms. As name suggest it is tabular which means formed by migration 2D dunes and ripples. 2D means straight crested ripples or dunes(Note- 3D bedforms are formed as flow regimes shifted to higher flow velocity, like in case of ripples straight crested will transform to lunate, lingoid ripples mainly).

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    got it, thanks!

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    Anytime brother... Happy to help:)

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    AntiDunes will also form in Higher flow regime,Right??

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    yes correct

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