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The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin

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The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin. / Govin, Gwladys; Najman, Yanina Manya Rachel; Dupont-Nivet, Guillaume et al.
In: American Journal of Science, Vol. 318, No. 7, 09.2018, p. 764-798.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Govin, G, Najman, YMR, Dupont-Nivet, G, Millar, I, van der Beek, P, Huyghe, P, O'Sullivan, P, Mark, C & Vogeli, N 2018, 'The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin', American Journal of Science, vol. 318, no. 7, pp. 764-798. https://doi.org/10.2475/07.2018.02

APA

Govin, G., Najman, Y. M. R., Dupont-Nivet, G., Millar, I., van der Beek, P., Huyghe, P., O'Sullivan, P., Mark, C., & Vogeli, N. (2018). The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin. American Journal of Science, 318(7), 764-798. https://doi.org/10.2475/07.2018.02

Vancouver

Govin G, Najman YMR, Dupont-Nivet G, Millar I, van der Beek P, Huyghe P et al. The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin. American Journal of Science. 2018 Sept;318(7):764-798. doi: 10.2475/07.2018.02

Author

Bibtex

@article{8d88eeadbc90426eaa7d74dfb64e792c,
title = "The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin",
abstract = "The Siwalik sedimentary rocks of the Himalayan foreland basin preserve a record of Himalayan orogenesis, paleo-drainage evolution, and erosion. This study focuses on the still poorly studied easternmost Himalaya Siwalik record located directly downstream of the Namche Barwa syntaxis. We use luminescence, palaeomagnetism, magnetostratigraphy, and apatite fission-track dating to constrain the depositional ages of three Siwalik sequences: the Sibo outcrop (Upper Siwalik sediments at ca. 200-800 ka), the Remi section (Middle and Upper Siwalik rocks at ca. 0.8-6.6 Ma), and the Siang section (Middle Siwalik rocks at ca. <9.3±1.5 to <13.5±1.5 Ma). Cretaceous-Paleogene detrital zircon and apatite U-Pb ages, characteristic of the Transhimalayan Gangdese Batholiths that crop out northwest of the syntaxis, are present throughout the Sibo-Remi-Siang successions, confirming the existence of a Yarlung-Brahmaputra connection since at least the Late Miocene. A ca. 500 Ma zircon population increases up section, most strikingly sometime between 3.6-6.6 Ma, at the expense of Transhimalayan grains. We consider the ca 500 Ma population to be derived from the Tethyan or Greater Himalaya, and we interpret the up-section increase to reflect progressive exhumation of the Namche Barwa syntaxis. Early Cretaceous zircon and apatite U-Pb ages are rare in the Sibo, Remi, and Siang successions, but abundant in modern Siang River sediments. Zircons of this age range are characteristic of the Transhimalayan Bomi-Chayu batholiths, which crop out east of the syntaxis and are eroded by the Parlung River, a modern tributary of the Siang River. We interpret the difference in relative abundance of Early Cretaceous zircons between the modern and ancient sediments to reflect capture of the Parlung by the Siang after 800 ka. ",
keywords = "Himalaya , Siwaliks, Namche Barwa syntaxis, Brahmaputra River, Parlung River, detrital geochronology and thermochronology",
author = "Gwladys Govin and Najman, {Yanina Manya Rachel} and Guillaume Dupont-Nivet and Ian Millar and {van der Beek}, Peter and Pascale Huyghe and Paul O'Sullivan and Chris Mark and Natalie Vogeli",
note = "Copyright {\textcopyright} 2018 by American Journal of Science",
year = "2018",
month = sep,
doi = "10.2475/07.2018.02",
language = "English",
volume = "318",
pages = "764--798",
journal = "American Journal of Science",
issn = "1945-452X",
publisher = "Yale University",
number = "7",

}

RIS

TY - JOUR

T1 - The tectonics and paleo-drainage of the easternmost Himalaya (Arunachal Pradesh, India) recorded in the Siwalik rocks of the foreland basin

AU - Govin, Gwladys

AU - Najman, Yanina Manya Rachel

AU - Dupont-Nivet, Guillaume

AU - Millar, Ian

AU - van der Beek, Peter

AU - Huyghe, Pascale

AU - O'Sullivan, Paul

AU - Mark, Chris

AU - Vogeli, Natalie

N1 - Copyright © 2018 by American Journal of Science

PY - 2018/9

Y1 - 2018/9

N2 - The Siwalik sedimentary rocks of the Himalayan foreland basin preserve a record of Himalayan orogenesis, paleo-drainage evolution, and erosion. This study focuses on the still poorly studied easternmost Himalaya Siwalik record located directly downstream of the Namche Barwa syntaxis. We use luminescence, palaeomagnetism, magnetostratigraphy, and apatite fission-track dating to constrain the depositional ages of three Siwalik sequences: the Sibo outcrop (Upper Siwalik sediments at ca. 200-800 ka), the Remi section (Middle and Upper Siwalik rocks at ca. 0.8-6.6 Ma), and the Siang section (Middle Siwalik rocks at ca. <9.3±1.5 to <13.5±1.5 Ma). Cretaceous-Paleogene detrital zircon and apatite U-Pb ages, characteristic of the Transhimalayan Gangdese Batholiths that crop out northwest of the syntaxis, are present throughout the Sibo-Remi-Siang successions, confirming the existence of a Yarlung-Brahmaputra connection since at least the Late Miocene. A ca. 500 Ma zircon population increases up section, most strikingly sometime between 3.6-6.6 Ma, at the expense of Transhimalayan grains. We consider the ca 500 Ma population to be derived from the Tethyan or Greater Himalaya, and we interpret the up-section increase to reflect progressive exhumation of the Namche Barwa syntaxis. Early Cretaceous zircon and apatite U-Pb ages are rare in the Sibo, Remi, and Siang successions, but abundant in modern Siang River sediments. Zircons of this age range are characteristic of the Transhimalayan Bomi-Chayu batholiths, which crop out east of the syntaxis and are eroded by the Parlung River, a modern tributary of the Siang River. We interpret the difference in relative abundance of Early Cretaceous zircons between the modern and ancient sediments to reflect capture of the Parlung by the Siang after 800 ka.

AB - The Siwalik sedimentary rocks of the Himalayan foreland basin preserve a record of Himalayan orogenesis, paleo-drainage evolution, and erosion. This study focuses on the still poorly studied easternmost Himalaya Siwalik record located directly downstream of the Namche Barwa syntaxis. We use luminescence, palaeomagnetism, magnetostratigraphy, and apatite fission-track dating to constrain the depositional ages of three Siwalik sequences: the Sibo outcrop (Upper Siwalik sediments at ca. 200-800 ka), the Remi section (Middle and Upper Siwalik rocks at ca. 0.8-6.6 Ma), and the Siang section (Middle Siwalik rocks at ca. <9.3±1.5 to <13.5±1.5 Ma). Cretaceous-Paleogene detrital zircon and apatite U-Pb ages, characteristic of the Transhimalayan Gangdese Batholiths that crop out northwest of the syntaxis, are present throughout the Sibo-Remi-Siang successions, confirming the existence of a Yarlung-Brahmaputra connection since at least the Late Miocene. A ca. 500 Ma zircon population increases up section, most strikingly sometime between 3.6-6.6 Ma, at the expense of Transhimalayan grains. We consider the ca 500 Ma population to be derived from the Tethyan or Greater Himalaya, and we interpret the up-section increase to reflect progressive exhumation of the Namche Barwa syntaxis. Early Cretaceous zircon and apatite U-Pb ages are rare in the Sibo, Remi, and Siang successions, but abundant in modern Siang River sediments. Zircons of this age range are characteristic of the Transhimalayan Bomi-Chayu batholiths, which crop out east of the syntaxis and are eroded by the Parlung River, a modern tributary of the Siang River. We interpret the difference in relative abundance of Early Cretaceous zircons between the modern and ancient sediments to reflect capture of the Parlung by the Siang after 800 ka.

KW - Himalaya

KW - Siwaliks

KW - Namche Barwa syntaxis

KW - Brahmaputra River

KW - Parlung River

KW - detrital geochronology and thermochronology

U2 - 10.2475/07.2018.02

DO - 10.2475/07.2018.02

M3 - Journal article

VL - 318

SP - 764

EP - 798

JO - American Journal of Science

JF - American Journal of Science

SN - 1945-452X

IS - 7

ER -