Resolving the Paleogeographic Puzzle of the Lhasa Terrane in Southern Tibet

Qing Wang; Di Cheng Zhu; Peter A. Cawood; Sun Lin Chung; Zhi Dan Zhao

doi:10.1029/2021GL094236

Resolving the Paleogeographic Puzzle of the Lhasa Terrane in Southern Tibet

Qing Wang
, Di Cheng Zhu
, Peter A. Cawood
, Sun Lin Chung
, Zhi Dan Zhao

School of Earth Atmosphere and Environment

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

57 Citations (Scopus)

Abstract

The widespread Tibetan Permo-Carboniferous glaciogenic diamictites (PCGDs) are conventionally thought to be sourced from Indian Gondwana during glacier transport and deglaciation. However, the Lhasa PCGDs differ in detrital zircon U-Pb age spectra and ε_Hf(t) values from those in Southern Qiangtang and Tethyan Himalaya. The similarities in ε_Hf(t) values for similar-age detrital zircons, the development of glacier transport pathways, and the large volumes of the Tibetan PCGDs indicate an Australian source for the Lhasa PCDGs, and an Indian source for the Southern Qiangtang and Tethyan Himalayan PCDGs. We conclude that the Southern Qiangtang and Tethyan Himalayan are paleographically linked to northern India, whereas Lhasa is positioned adjacent to NW Australia during the Paleozoic. Magmatic and metamorphic records further indicate that eastern Lhasa (E90°–E95°) represents the outboard extension of events recorded in northern Central Australia, whereas western Lhasa (E80°–E90°) was located outboard of the West Australian Craton.

Original language	English
Article number	e2021GL094236
Number of pages	11
Journal	Geophysical Research Letters
Volume	48
Issue number	15
DOIs	https://doi.org/10.1029/2021GL094236
Publication status	Published - 16 Aug 2021

Keywords

detrital zircon
glaciogenic diamictite
paleogeographic puzzle
Permo-Carboniferous
Tibet

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10.1029/2021GL094236Licence: CC BY

Cite this

@article{c84a5712490c41dc86e402fd26d6aeb5,

title = "Resolving the Paleogeographic Puzzle of the Lhasa Terrane in Southern Tibet",

abstract = "The widespread Tibetan Permo-Carboniferous glaciogenic diamictites (PCGDs) are conventionally thought to be sourced from Indian Gondwana during glacier transport and deglaciation. However, the Lhasa PCGDs differ in detrital zircon U-Pb age spectra and εHf(t) values from those in Southern Qiangtang and Tethyan Himalaya. The similarities in εHf(t) values for similar-age detrital zircons, the development of glacier transport pathways, and the large volumes of the Tibetan PCGDs indicate an Australian source for the Lhasa PCDGs, and an Indian source for the Southern Qiangtang and Tethyan Himalayan PCDGs. We conclude that the Southern Qiangtang and Tethyan Himalayan are paleographically linked to northern India, whereas Lhasa is positioned adjacent to NW Australia during the Paleozoic. Magmatic and metamorphic records further indicate that eastern Lhasa (E90°–E95°) represents the outboard extension of events recorded in northern Central Australia, whereas western Lhasa (E80°–E90°) was located outboard of the West Australian Craton.",

keywords = "detrital zircon, glaciogenic diamictite, paleogeographic puzzle, Permo-Carboniferous, Tibet",

author = "Qing Wang and Zhu, \{Di Cheng\} and Cawood, \{Peter A.\} and Chung, \{Sun Lin\} and Zhao, \{Zhi Dan\}",

note = "Funding Information: This research was financially co-supported by the Second?Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0702), the Chinese National Natural Science Foundation (grant Nos 41872060, 41073013, and 91755207), the 111 project (B18048), and the Australian Research Council (grant FL160100168). The authors thank Profs. Cai Li and Xiu-Gen Fu for helping with sample collection from Gangmaco in the Southern Qiangtang. The authors also thank Prof. Shao-Cong Lai and two anonymous reviewers for their constructive reviews that improved the quality of this manuscript and Editor Valerie Trouet for her editorial handling. This is CUGB petrogeochemical contribution No. PGC-201570. Funding Information: This research was financially co‐supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0702), the Chinese National Natural Science Foundation (grant Nos 41872060, 41073013, and 91755207), the 111 project (B18048), and the Australian Research Council (grant FL160100168). The authors thank Profs. Cai Li and Xiu‐Gen Fu for helping with sample collection from Gangmaco in the Southern Qiangtang. The authors also thank Prof. Shao‐Cong Lai and two anonymous reviewers for their constructive reviews that improved the quality of this manuscript and Editor Valerie Trouet for her editorial handling. This is CUGB petrogeochemical contribution No. PGC‐201570. Publisher Copyright: {\textcopyright} 2021. The Authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = aug,

day = "16",

doi = "10.1029/2021GL094236",

language = "English",

volume = "48",

journal = "Geophysical Research Letters",

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AU - Wang, Qing

AU - Zhu, Di Cheng

AU - Cawood, Peter A.

AU - Chung, Sun Lin

AU - Zhao, Zhi Dan

N1 - Funding Information: This research was financially co-supported by the Second?Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0702), the Chinese National Natural Science Foundation (grant Nos 41872060, 41073013, and 91755207), the 111 project (B18048), and the Australian Research Council (grant FL160100168). The authors thank Profs. Cai Li and Xiu-Gen Fu for helping with sample collection from Gangmaco in the Southern Qiangtang. The authors also thank Prof. Shao-Cong Lai and two anonymous reviewers for their constructive reviews that improved the quality of this manuscript and Editor Valerie Trouet for her editorial handling. This is CUGB petrogeochemical contribution No. PGC-201570. Funding Information: This research was financially co‐supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (2019QZKK0702), the Chinese National Natural Science Foundation (grant Nos 41872060, 41073013, and 91755207), the 111 project (B18048), and the Australian Research Council (grant FL160100168). The authors thank Profs. Cai Li and Xiu‐Gen Fu for helping with sample collection from Gangmaco in the Southern Qiangtang. The authors also thank Prof. Shao‐Cong Lai and two anonymous reviewers for their constructive reviews that improved the quality of this manuscript and Editor Valerie Trouet for her editorial handling. This is CUGB petrogeochemical contribution No. PGC‐201570. Publisher Copyright: © 2021. The Authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/8/16

Y1 - 2021/8/16

N2 - The widespread Tibetan Permo-Carboniferous glaciogenic diamictites (PCGDs) are conventionally thought to be sourced from Indian Gondwana during glacier transport and deglaciation. However, the Lhasa PCGDs differ in detrital zircon U-Pb age spectra and εHf(t) values from those in Southern Qiangtang and Tethyan Himalaya. The similarities in εHf(t) values for similar-age detrital zircons, the development of glacier transport pathways, and the large volumes of the Tibetan PCGDs indicate an Australian source for the Lhasa PCDGs, and an Indian source for the Southern Qiangtang and Tethyan Himalayan PCDGs. We conclude that the Southern Qiangtang and Tethyan Himalayan are paleographically linked to northern India, whereas Lhasa is positioned adjacent to NW Australia during the Paleozoic. Magmatic and metamorphic records further indicate that eastern Lhasa (E90°–E95°) represents the outboard extension of events recorded in northern Central Australia, whereas western Lhasa (E80°–E90°) was located outboard of the West Australian Craton.

AB - The widespread Tibetan Permo-Carboniferous glaciogenic diamictites (PCGDs) are conventionally thought to be sourced from Indian Gondwana during glacier transport and deglaciation. However, the Lhasa PCGDs differ in detrital zircon U-Pb age spectra and εHf(t) values from those in Southern Qiangtang and Tethyan Himalaya. The similarities in εHf(t) values for similar-age detrital zircons, the development of glacier transport pathways, and the large volumes of the Tibetan PCGDs indicate an Australian source for the Lhasa PCDGs, and an Indian source for the Southern Qiangtang and Tethyan Himalayan PCDGs. We conclude that the Southern Qiangtang and Tethyan Himalayan are paleographically linked to northern India, whereas Lhasa is positioned adjacent to NW Australia during the Paleozoic. Magmatic and metamorphic records further indicate that eastern Lhasa (E90°–E95°) represents the outboard extension of events recorded in northern Central Australia, whereas western Lhasa (E80°–E90°) was located outboard of the West Australian Craton.

KW - detrital zircon

KW - glaciogenic diamictite

KW - paleogeographic puzzle

KW - Permo-Carboniferous

KW - Tibet

UR - https://www.scopus.com/pages/publications/85112112870

U2 - 10.1029/2021GL094236

DO - 10.1029/2021GL094236

M3 - Article

AN - SCOPUS:85112112870

SN - 0094-8276

VL - 48

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 15

M1 - e2021GL094236

ER -

Resolving the Paleogeographic Puzzle of the Lhasa Terrane in Southern Tibet

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Resolving the Paleogeographic Puzzle of the Lhasa Terrane in Southern Tibet

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