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Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies

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Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies. / Zhuang, Guangsheng; Najman, Yanina Manya Rachel; Tian, Yuntao et al.

In: Journal of the Geological Society, Vol. 175, No. 6, 11.2018, p. 934-948.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Zhuang, G, Najman, YMR, Tian, Y, Carter, A, Gemignani, L, Wijbrans, J, Jan, MQ & Khan, MA 2018, 'Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies', Journal of the Geological Society, vol. 175, no. 6, pp. 934-948. https://doi.org/10.1144/jgs2018-007

APA

Zhuang, G., Najman, Y. M. R., Tian, Y., Carter, A., Gemignani, L., Wijbrans, J., Jan, M. Q., & Khan, M. A. (2018). Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies. Journal of the Geological Society, 175(6), 934-948. https://doi.org/10.1144/jgs2018-007

Vancouver

Zhuang G, Najman YMR, Tian Y, Carter A, Gemignani L, Wijbrans J et al. Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies. Journal of the Geological Society. 2018 Nov;175(6):934-948. doi: 10.1144/jgs2018-007

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Bibtex

@article{9ba92ae860bb46ce833b252cd3db9134,
title = "Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies",
abstract = "The Hindu Kush-Kohistan-Karakoram region is critical to understanding the long-term accretion history of the south Asian margin pre- and post-India-Asia collision and the impact of these collisions on the development of high topography. However, knowledge about this region remains incomplete due to sparse studies. Here, we present a study comprising detrital zircon U-Pb geochronology, detrital muscovite 40Ar/39Ar thermochronology, and numerical modeling on 40Ar/39Ar dates. The study identifies zircon U-Pb age peaks at 200 Ma, 110–130 Ma, 60–80 Ma, and 28–40 Ma, supporting the polyphase collisions and crustal growth in the south Asian margin. Modeling study reveals fast cooling/erosion at 115–129 Ma, 69–71 Ma, 27–35 Ma, and <8 Ma, which are synchronous with collision related crustal growth, indicating the significant impact of accretion both prior to and post India-Asia collision. This study, along with studies in eastern Karakoram, reveals along-strike variations in erosion and exhumation with young (since late Miocene) intense erosion focusing on the east-central Karakoram. We suggest that this east-west spatial variation in exhumation may have been associated with more intense crustal shortening, and thus the greater crustal thickness, topographic relief and altitude observed in the eastern, compared to western, Karakoram.",
keywords = "Erosion, Geochronology, Mica, Silicate minerals, Structural geology, Zircon, Crustal growth, Crustal shortening, Crustal thickness, Detrital zircon, Late Miocene, Modelling studies, Spatial variations, Thermochronology, Metamorphic rocks",
author = "Guangsheng Zhuang and Najman, {Yanina Manya Rachel} and Yuntao Tian and Andrew Carter and Lorenzo Gemignani and Jan Wijbrans and Jan, {M Qasim} and Khan, {M Asif}",
year = "2018",
month = nov,
doi = "10.1144/jgs2018-007",
language = "English",
volume = "175",
pages = "934--948",
journal = "Journal of the Geological Society",
issn = "0016-7649",
publisher = "Geological Society of London",
number = "6",

}

RIS

TY - JOUR

T1 - Insights into the evolution of The Hindu Kush-Kohistan-Karakoram from modern river sand detrital geo- and thermochronological studies

AU - Zhuang, Guangsheng

AU - Najman, Yanina Manya Rachel

AU - Tian, Yuntao

AU - Carter, Andrew

AU - Gemignani, Lorenzo

AU - Wijbrans, Jan

AU - Jan, M Qasim

AU - Khan, M Asif

PY - 2018/11

Y1 - 2018/11

N2 - The Hindu Kush-Kohistan-Karakoram region is critical to understanding the long-term accretion history of the south Asian margin pre- and post-India-Asia collision and the impact of these collisions on the development of high topography. However, knowledge about this region remains incomplete due to sparse studies. Here, we present a study comprising detrital zircon U-Pb geochronology, detrital muscovite 40Ar/39Ar thermochronology, and numerical modeling on 40Ar/39Ar dates. The study identifies zircon U-Pb age peaks at 200 Ma, 110–130 Ma, 60–80 Ma, and 28–40 Ma, supporting the polyphase collisions and crustal growth in the south Asian margin. Modeling study reveals fast cooling/erosion at 115–129 Ma, 69–71 Ma, 27–35 Ma, and <8 Ma, which are synchronous with collision related crustal growth, indicating the significant impact of accretion both prior to and post India-Asia collision. This study, along with studies in eastern Karakoram, reveals along-strike variations in erosion and exhumation with young (since late Miocene) intense erosion focusing on the east-central Karakoram. We suggest that this east-west spatial variation in exhumation may have been associated with more intense crustal shortening, and thus the greater crustal thickness, topographic relief and altitude observed in the eastern, compared to western, Karakoram.

AB - The Hindu Kush-Kohistan-Karakoram region is critical to understanding the long-term accretion history of the south Asian margin pre- and post-India-Asia collision and the impact of these collisions on the development of high topography. However, knowledge about this region remains incomplete due to sparse studies. Here, we present a study comprising detrital zircon U-Pb geochronology, detrital muscovite 40Ar/39Ar thermochronology, and numerical modeling on 40Ar/39Ar dates. The study identifies zircon U-Pb age peaks at 200 Ma, 110–130 Ma, 60–80 Ma, and 28–40 Ma, supporting the polyphase collisions and crustal growth in the south Asian margin. Modeling study reveals fast cooling/erosion at 115–129 Ma, 69–71 Ma, 27–35 Ma, and <8 Ma, which are synchronous with collision related crustal growth, indicating the significant impact of accretion both prior to and post India-Asia collision. This study, along with studies in eastern Karakoram, reveals along-strike variations in erosion and exhumation with young (since late Miocene) intense erosion focusing on the east-central Karakoram. We suggest that this east-west spatial variation in exhumation may have been associated with more intense crustal shortening, and thus the greater crustal thickness, topographic relief and altitude observed in the eastern, compared to western, Karakoram.

KW - Erosion

KW - Geochronology

KW - Mica

KW - Silicate minerals

KW - Structural geology

KW - Zircon

KW - Crustal growth

KW - Crustal shortening

KW - Crustal thickness

KW - Detrital zircon

KW - Late Miocene

KW - Modelling studies

KW - Spatial variations

KW - Thermochronology

KW - Metamorphic rocks

U2 - 10.1144/jgs2018-007

DO - 10.1144/jgs2018-007

M3 - Journal article

VL - 175

SP - 934

EP - 948

JO - Journal of the Geological Society

JF - Journal of the Geological Society

SN - 0016-7649

IS - 6

ER -