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Title: Understanding Himalayan erosion and the significance of the Nicobar Fan
Authors: McNeill, Lisa C.
Dugan, Brandon
Backman, Jan
Pickering, Kevin T.
Pouderoux, Hugo F. A.
Henstock, Timothy J.
Petronotis, Katerina E.
Carter, Andrew
Chemale Jr., Farid
Milliken, Kitty L.
Kutterolf, Steffen
Mukoyoshi, Hideki
Chen, Wenhuang
Kachovich, Sarah
Mitchison, Freya L.
Bourlange, Sylvain
Colson, Tobias A.
Frederik, Marina C. G.
Guèrin, Gilles
Hamahashi, Mari
House, Brian M.
Hüpers, Andre
Jeppson, Tamara N.
Kenigsberg, Abby R.
Kuranaga, Mebae
Nair, Nisha
Owari, Satoko
Shan, Yehua
Song, Insun
Torres, Marta E.
Vannucchi, Paola
Vrolijk, Peter J.
Yang, Tao
Zhao, Xixi
Thomas, Ellen
Keywords: Science::Geology
Issue Date: 2017
Source: McNeill, L. C., Dugan, B., Backman, J., Pickering, K. T., Pouderoux, H. F. A., Henstock, T. J., ... Thomas, E. (2017). Understanding Himalayan erosion and the significance of the Nicobar Fan. Earth and Planetary Science Letters, 475134-142. doi:10.1016/j.epsl.2017.07.019
Journal: Earth and Planetary Science Letters
Abstract: A holistic view of the Bengal–Nicobar Fan system requires sampling the full sedimentary section of the Nicobar Fan, which was achieved for the first time by International Ocean Discovery Program (IODP) Expedition 362 west of North Sumatra. We identified a distinct rise in sediment accumulation rate (SAR) beginning ∼9.5 Ma and reaching 250–350 m/Myr in the 9.5–2 Ma interval, which equal or far exceed rates on the Bengal Fan at similar latitudes. This marked rise in SAR and a constant Himalayan-derived provenance necessitates a major restructuring of sediment routing in the Bengal–Nicobar submarine fan. This coincides with the inversion of the Eastern Himalayan Shillong Plateau and encroachment of the west-propagating Indo–Burmese wedge, which reduced continental accommodation space and increased sediment supply directly to the fan. Our results challenge a commonly held view that changes in sediment flux seen in the Bengal–Nicobar submarine fan were caused by discrete tectonic or climatic events acting on the Himalayan–Tibetan Plateau. Instead, an interplay of tectonic and climatic processes caused the fan system to develop by punctuated changes rather than gradual progradation.
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2017.07.019
Rights: © 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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