Cenozoic lithospheric architecture and metallogenesis in Southeastern Tibet

Bo Xu; Zeng-Qian Hou; William L. Griffin; Yuan-Chuan Zheng; Tao Wang; Zhen Guo; Jue Hou; M. Santosh; Suzanne Y. O'Reilly

doi:10.1016/j.earscirev.2020.103472

Cenozoic lithospheric architecture and metallogenesis in Southeastern Tibet

Bo Xu^*, Zeng-Qian Hou, William L. Griffin, Yuan-Chuan Zheng, Tao Wang, Zhen Guo, Jue Hou, M. Santosh, Suzanne Y. O'Reilly

^*Corresponding author for this work

ARC Centre of Excellence for Core to Crust Fluid Systems (incorporation ARC National Key Centre for Geochemical evolution and Metallogeny of Continents (GEMOC))

Research output: Contribution to journal › Review article › peer-review

93 Citations (Scopus)

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Abstract

Ore systems are located in zones of enhanced and focused heat and fluids flux within the lithosphere. In order to target deep ore deposits under cover, a better understanding of lithospheric architecture is essential, especially in relation to magmatism and fluids. Here we attempt an integrated approach using zircon Lu[sbnd]Hf isotopic mapping (455 samples with 5049 zircon analyses, including 1021 new data), combined with whole-rock geochemistry and isotopes of mantle-derived mafic rocks, high-resolution seismic tomography from 325 seismic stations and new thermochemical modelling, to establish the lithosphere architecture in southeastern Tibet. The integrated data suggest lithospheric refertilisation accompanied by heat flux from the asthenosphere, and also reveal the evolutionary pathway of the volatile components. The approach adopted in our study can be used in exploration for porphyry Cu[sbnd]Au, orogenic-Au and rare earth element deposits in Southeastern Tibet, and illustrate the usefulness of lithosphere-architecture mapping as a useful tool for mineral exploration.

Original language	English
Article number	103472
Pages (from-to)	1-26
Number of pages	26
Journal	Earth-Science Reviews
Volume	214
DOIs	https://doi.org/10.1016/j.earscirev.2020.103472
Publication status	Published - Mar 2021

Bibliographical note

Copyright the Author(s) 2020. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

Lithospheric architecture
Mineral Exploration
Zircon Lu–Hf isotopes, Geochemistry
Seismic tomography
Southeastern Tibet

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10.1016/j.earscirev.2020.103472Licence: CC BY-NC-ND

Publisher version (open access)Final published version, 2.58 MBLicence: CC BY-NC-ND

Cite this

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title = "Cenozoic lithospheric architecture and metallogenesis in Southeastern Tibet",

abstract = "Ore systems are located in zones of enhanced and focused heat and fluids flux within the lithosphere. In order to target deep ore deposits under cover, a better understanding of lithospheric architecture is essential, especially in relation to magmatism and fluids. Here we attempt an integrated approach using zircon Lu[sbnd]Hf isotopic mapping (455 samples with 5049 zircon analyses, including 1021 new data), combined with whole-rock geochemistry and isotopes of mantle-derived mafic rocks, high-resolution seismic tomography from 325 seismic stations and new thermochemical modelling, to establish the lithosphere architecture in southeastern Tibet. The integrated data suggest lithospheric refertilisation accompanied by heat flux from the asthenosphere, and also reveal the evolutionary pathway of the volatile components. The approach adopted in our study can be used in exploration for porphyry Cu[sbnd]Au, orogenic-Au and rare earth element deposits in Southeastern Tibet, and illustrate the usefulness of lithosphere-architecture mapping as a useful tool for mineral exploration.",

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doi = "10.1016/j.earscirev.2020.103472",

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AU - Xu, Bo

AU - Hou, Zeng-Qian

AU - Griffin, William L.

AU - Zheng, Yuan-Chuan

AU - Wang, Tao

AU - Guo, Zhen

AU - Hou, Jue

AU - Santosh, M.

AU - O'Reilly, Suzanne Y.

N1 - Copyright the Author(s) 2020. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2021/3

Y1 - 2021/3

N2 - Ore systems are located in zones of enhanced and focused heat and fluids flux within the lithosphere. In order to target deep ore deposits under cover, a better understanding of lithospheric architecture is essential, especially in relation to magmatism and fluids. Here we attempt an integrated approach using zircon Lu[sbnd]Hf isotopic mapping (455 samples with 5049 zircon analyses, including 1021 new data), combined with whole-rock geochemistry and isotopes of mantle-derived mafic rocks, high-resolution seismic tomography from 325 seismic stations and new thermochemical modelling, to establish the lithosphere architecture in southeastern Tibet. The integrated data suggest lithospheric refertilisation accompanied by heat flux from the asthenosphere, and also reveal the evolutionary pathway of the volatile components. The approach adopted in our study can be used in exploration for porphyry Cu[sbnd]Au, orogenic-Au and rare earth element deposits in Southeastern Tibet, and illustrate the usefulness of lithosphere-architecture mapping as a useful tool for mineral exploration.

AB - Ore systems are located in zones of enhanced and focused heat and fluids flux within the lithosphere. In order to target deep ore deposits under cover, a better understanding of lithospheric architecture is essential, especially in relation to magmatism and fluids. Here we attempt an integrated approach using zircon Lu[sbnd]Hf isotopic mapping (455 samples with 5049 zircon analyses, including 1021 new data), combined with whole-rock geochemistry and isotopes of mantle-derived mafic rocks, high-resolution seismic tomography from 325 seismic stations and new thermochemical modelling, to establish the lithosphere architecture in southeastern Tibet. The integrated data suggest lithospheric refertilisation accompanied by heat flux from the asthenosphere, and also reveal the evolutionary pathway of the volatile components. The approach adopted in our study can be used in exploration for porphyry Cu[sbnd]Au, orogenic-Au and rare earth element deposits in Southeastern Tibet, and illustrate the usefulness of lithosphere-architecture mapping as a useful tool for mineral exploration.

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KW - Mineral Exploration

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KW - Seismic tomography

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Cenozoic lithospheric architecture and metallogenesis in Southeastern Tibet

Abstract

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