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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ananya Kundu posted an Question
October 11, 2020 • 00:06 am
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30 points
30 points
- IIT JAM
- Geology (GG)
Can we identify paleo tsunami with hummocky cross stratification?
can we identify paleo tsunami with Hummocky cross stratification?
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Rahul kumar
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Rahul kumar
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No, paleo tsunami cannot be identified by herringbone structure. Herringbone cross-stratification is a type of sedimentary structure formed in tidal areas, where the current periodically flows in the opposite direction. Herringbone structures cannot develop successively in thick layers in a tsunamiite bed.
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I had doubt whether Hummocky cross stratification helps is identification of paleo tsunami. Are they same?
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Yes, Hummocky cross stratifications can help in identification of paleo tsunami. Herringbone structure and Hummocky cross stratifications are different. Hummocky cross stratifications are characteristic of storm/tsunami deposit whereas herringbone structure only indicates tidal environment (bipolar flow).
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Sajan sarthak![best-answer]()
At present, paleo-tsunami deposits cannot be distinguished from paleo-cyclone deposits using sedimentological features alone, without historical information. The future success of distinguishing paleo-tsunami deposits depends on the development of criteria based on systematic synthesis of copious modern examples worldwide and on the precise application of basic principles of process sedimentology.