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Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya

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Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya. / Govin, Gwladys; van der Beek, Peter; Najman, Yani; Millar, Ian; Gemignani, Lorenzo; Huyghe, Pascale; Dupont-Nivet, Guillaume; Bernet, Matthias; Mark, Chris; Wijbrans, J. R.

In: Geology, Vol. 48, No. 12, 01.11.2020, p. 1139–1143.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Govin, G, van der Beek, P, Najman, Y, Millar, I, Gemignani, L, Huyghe, P, Dupont-Nivet, G, Bernet, M, Mark, C & Wijbrans, JR 2020, 'Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya', Geology, vol. 48, no. 12, pp. 1139–1143. https://doi.org/10.1130/G47720.1

APA

Govin, G., van der Beek, P., Najman, Y., Millar, I., Gemignani, L., Huyghe, P., Dupont-Nivet, G., Bernet, M., Mark, C., & Wijbrans, J. R. (2020). Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya. Geology, 48(12), 1139–1143. https://doi.org/10.1130/G47720.1

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Author

Govin, Gwladys ; van der Beek, Peter ; Najman, Yani ; Millar, Ian ; Gemignani, Lorenzo ; Huyghe, Pascale ; Dupont-Nivet, Guillaume ; Bernet, Matthias ; Mark, Chris ; Wijbrans, J. R. / Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya. In: Geology. 2020 ; Vol. 48, No. 12. pp. 1139–1143.

Bibtex

@article{704b2ded8b3c497994216551abf2d652,
title = "Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya",
abstract = "The Himalayan syntaxes, characterized by extreme rates of rock exhumation co-located with major trans-orogenic rivers, figure prominently inthe debate on tectonic versus erosional forcing of exhumation. Both the mechanism and timing of rapid exhumation of the Namche Barwamassif in the eastern syntaxis remain controversial. It has been argued that coupling between crustal rock advection and surface erosioninitiated in the late Miocene (8-10 Ma). Recent studies, in contrast, suggest a Quaternary onset of rapid exhumation linked to a purely tectonicmechanism. We report new multisystem detrital thermochronology data from the most proximal Neogene clastic sediments downstream ofNamche Barwa and use a thermo-kinematic model constrained by new and published data to explore its exhumation history. Modeling resultsshow that exhumation accelerated to ~4 km/m.y. at ~8 Ma and to ~9 km/m.y. after ~2 Ma. This three-stage history reconciles apparentlycontradictory evidence for early and late onset of rapid exhumation, and suggests efficient coupling between tectonics and erosion since thelate Miocene. Quaternary acceleration of exhumation is consistent with river-profile evolution, and may be linked to a Quaternary river-captureevent.",
author = "Gwladys Govin and {van der Beek}, Peter and Yani Najman and Ian Millar and Lorenzo Gemignani and Pascale Huyghe and Guillaume Dupont-Nivet and Matthias Bernet and Chris Mark and Wijbrans, {J. R.}",
year = "2020",
month = nov,
day = "1",
doi = "10.1130/G47720.1",
language = "English",
volume = "48",
pages = "1139–1143",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "12",

}

RIS

TY - JOUR

T1 - Early onset and late acceleration of rapid exhumation in the Namche Barwa syntaxis, eastern Himalaya

AU - Govin, Gwladys

AU - van der Beek, Peter

AU - Najman, Yani

AU - Millar, Ian

AU - Gemignani, Lorenzo

AU - Huyghe, Pascale

AU - Dupont-Nivet, Guillaume

AU - Bernet, Matthias

AU - Mark, Chris

AU - Wijbrans, J. R.

PY - 2020/11/1

Y1 - 2020/11/1

N2 - The Himalayan syntaxes, characterized by extreme rates of rock exhumation co-located with major trans-orogenic rivers, figure prominently inthe debate on tectonic versus erosional forcing of exhumation. Both the mechanism and timing of rapid exhumation of the Namche Barwamassif in the eastern syntaxis remain controversial. It has been argued that coupling between crustal rock advection and surface erosioninitiated in the late Miocene (8-10 Ma). Recent studies, in contrast, suggest a Quaternary onset of rapid exhumation linked to a purely tectonicmechanism. We report new multisystem detrital thermochronology data from the most proximal Neogene clastic sediments downstream ofNamche Barwa and use a thermo-kinematic model constrained by new and published data to explore its exhumation history. Modeling resultsshow that exhumation accelerated to ~4 km/m.y. at ~8 Ma and to ~9 km/m.y. after ~2 Ma. This three-stage history reconciles apparentlycontradictory evidence for early and late onset of rapid exhumation, and suggests efficient coupling between tectonics and erosion since thelate Miocene. Quaternary acceleration of exhumation is consistent with river-profile evolution, and may be linked to a Quaternary river-captureevent.

AB - The Himalayan syntaxes, characterized by extreme rates of rock exhumation co-located with major trans-orogenic rivers, figure prominently inthe debate on tectonic versus erosional forcing of exhumation. Both the mechanism and timing of rapid exhumation of the Namche Barwamassif in the eastern syntaxis remain controversial. It has been argued that coupling between crustal rock advection and surface erosioninitiated in the late Miocene (8-10 Ma). Recent studies, in contrast, suggest a Quaternary onset of rapid exhumation linked to a purely tectonicmechanism. We report new multisystem detrital thermochronology data from the most proximal Neogene clastic sediments downstream ofNamche Barwa and use a thermo-kinematic model constrained by new and published data to explore its exhumation history. Modeling resultsshow that exhumation accelerated to ~4 km/m.y. at ~8 Ma and to ~9 km/m.y. after ~2 Ma. This three-stage history reconciles apparentlycontradictory evidence for early and late onset of rapid exhumation, and suggests efficient coupling between tectonics and erosion since thelate Miocene. Quaternary acceleration of exhumation is consistent with river-profile evolution, and may be linked to a Quaternary river-captureevent.

U2 - 10.1130/G47720.1

DO - 10.1130/G47720.1

M3 - Journal article

VL - 48

SP - 1139

EP - 1143

JO - Geology

JF - Geology

SN - 0091-7613

IS - 12

ER -