Understanding Himalayan erosion and the significance of the Nicobar Fan

Lisa C. McNeill; Brandon Dugan; Jan Backman; Kevin T. Pickering; Hugo F.A. Pouderoux; Timothy J. Henstock; Katerina E. Petronotis; Andrew Carter; Farid Chemale; Kitty L. Milliken; Steffen Kutterolf; Hideki Mukoyoshi; Wenhuang Chen; Sarah Kachovich; Freya L. Mitchison; Sylvain Bourlange; Tobias A. Colson; Marina C.G. Frederik; Gilles Guèrin; Mari Hamahashi; Brian M. House; Andre Hüpers; Tamara N. Jeppson; Abby R. Kenigsberg; Mebae Kuranaga; Nisha Nair; Satoko Owari; Yehua Shan; Insun Song; Marta E. Torres; Paola Vannucchi; Peter J. Vrolijk; Tao Yang; Xixi Zhao; Ellen Thomas

doi:10.1016/j.epsl.2017.07.019

Understanding Himalayan erosion and the significance of the Nicobar Fan

Lisa C. McNeill, Brandon Dugan, Jan Backman, Kevin T. Pickering, Hugo F.A. Pouderoux, Timothy J. Henstock, Katerina E. Petronotis, Andrew Carter, Farid Chemale, Kitty L. Milliken, Steffen Kutterolf, Hideki Mukoyoshi, Wenhuang Chen, Sarah Kachovich, Freya L. Mitchison, Sylvain Bourlange, Tobias A. Colson, Marina C.G. Frederik, Gilles Guèrin, Mari HamahashiBrian M. House, Andre Hüpers, Tamara N. Jeppson, Abby R. Kenigsberg, Mebae Kuranaga, Nisha Nair, Satoko Owari, Yehua Shan, Insun Song, Marta E. Torres, Paola Vannucchi, Peter J. Vrolijk, Tao Yang, Xixi Zhao, Ellen Thomas

School of Earth Sciences

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

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.

Original language	English
Pages (from-to)	134-142
Number of pages	9
Journal	Earth and Planetary Science Letters
Volume	475
DOIs	https://doi.org/10.1016/j.epsl.2017.07.019
Publication status	Published - 1 Oct 2017

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McNeill, L. C., Dugan, B., Backman, J., Pickering, K. T., Pouderoux, H. F. A., Henstock, T. J., Petronotis, K. E., Carter, A., Chemale, F., Milliken, K. L., Kutterolf, S., Mukoyoshi, H., Chen, W., Kachovich, S., Mitchison, F. L., Bourlange, S., Colson, T. A., Frederik, M. C. G., Guèrin, G., ... Thomas, E. (2017). Understanding Himalayan erosion and the significance of the Nicobar Fan. Earth and Planetary Science Letters, 475, 134-142. https://doi.org/10.1016/j.epsl.2017.07.019

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title = "Understanding Himalayan erosion and the significance of the Nicobar Fan",

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.",

keywords = "Asian monsoon, Bengal–Nicobar Fan, Himalayan tectonics, Indian Ocean, submarine fan",

author = "McNeill, {Lisa C.} and Brandon Dugan and Jan Backman and Pickering, {Kevin T.} and Pouderoux, {Hugo F.A.} and Henstock, {Timothy J.} and Petronotis, {Katerina E.} and Andrew Carter and Farid Chemale and Milliken, {Kitty L.} and Steffen Kutterolf and Hideki Mukoyoshi and Wenhuang Chen and Sarah Kachovich and Mitchison, {Freya L.} and Sylvain Bourlange and Colson, {Tobias A.} and Frederik, {Marina C.G.} and Gilles Gu{\`e}rin and Mari Hamahashi and House, {Brian M.} and Andre H{\"u}pers and Jeppson, {Tamara N.} and Kenigsberg, {Abby R.} and Mebae Kuranaga and Nisha Nair and Satoko Owari and Yehua Shan and Insun Song and Torres, {Marta E.} and Paola Vannucchi and Vrolijk, {Peter J.} and Tao Yang and Xixi Zhao and Ellen Thomas",

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doi = "10.1016/j.epsl.2017.07.019",

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McNeill, LC, Dugan, B, Backman, J, Pickering, KT, Pouderoux, HFA, Henstock, TJ, Petronotis, KE, Carter, A, Chemale, F, Milliken, KL, Kutterolf, S, Mukoyoshi, H, Chen, W, Kachovich, S, Mitchison, FL, Bourlange, S, Colson, TA, Frederik, MCG, Guèrin, G, Hamahashi, M, House, BM, Hüpers, A, Jeppson, TN, Kenigsberg, AR, Kuranaga, M, Nair, N, Owari, S, Shan, Y, Song, I, Torres, ME, Vannucchi, P, Vrolijk, PJ, Yang, T, Zhao, X & Thomas, E 2017, 'Understanding Himalayan erosion and the significance of the Nicobar Fan', Earth and Planetary Science Letters, vol. 475, pp. 134-142. https://doi.org/10.1016/j.epsl.2017.07.019

TY - JOUR

T1 - Understanding Himalayan erosion and the significance of the Nicobar Fan

AU - McNeill, Lisa C.

AU - Dugan, Brandon

AU - Backman, Jan

AU - Pickering, Kevin T.

AU - Pouderoux, Hugo F.A.

AU - Henstock, Timothy J.

AU - Petronotis, Katerina E.

AU - Carter, Andrew

AU - Chemale, Farid

AU - Milliken, Kitty L.

AU - Kutterolf, Steffen

AU - Mukoyoshi, Hideki

AU - Chen, Wenhuang

AU - Kachovich, Sarah

AU - Mitchison, Freya L.

AU - Bourlange, Sylvain

AU - Colson, Tobias A.

AU - Frederik, Marina C.G.

AU - Guèrin, Gilles

AU - Hamahashi, Mari

AU - House, Brian M.

AU - Hüpers, Andre

AU - Jeppson, Tamara N.

AU - Kenigsberg, Abby R.

AU - Kuranaga, Mebae

AU - Nair, Nisha

AU - Owari, Satoko

AU - Shan, Yehua

AU - Song, Insun

AU - Torres, Marta E.

AU - Vannucchi, Paola

AU - Vrolijk, Peter J.

AU - Yang, Tao

AU - Zhao, Xixi

AU - Thomas, Ellen

PY - 2017/10/1

Y1 - 2017/10/1

N2 - 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.

AB - 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.

KW - Asian monsoon

KW - Bengal–Nicobar Fan

KW - Himalayan tectonics

KW - Indian Ocean

KW - submarine fan

UR - http://www.scopus.com/inward/record.url?scp=85027282699&partnerID=8YFLogxK

U2 - 10.1016/j.epsl.2017.07.019

DO - 10.1016/j.epsl.2017.07.019

M3 - Article

AN - SCOPUS:85027282699

SN - 0012-821X

VL - 475

SP - 134

EP - 142

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

ER -

Understanding Himalayan erosion and the significance of the Nicobar Fan

Abstract

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