U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism
To explore the geological evolution of the Grove Subglacial Highlands and their relationship with other terranes in the Prince Charles Mountains-Prydz Bay region of East Antarctica, 10 samples of metasedimentary rock were collected from glacial moraines in the Grove Mountains for zircon U-Pb dating...
Published in: | Precambrian Research |
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Language: | English |
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PRECAMBRIAN RESEARCH
2016
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Online Access: | https://hdl.handle.net/20.500.11897/438403 https://doi.org/10.1016/j.precamres.2015.12.018 |
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ftpekinguniv:oai:localhost:20.500.11897/438403 |
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Peking University Institutional Repository (PKU IR) |
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English |
topic |
Detrital zircon U-Pb age Hf isotopes Provenance Metamorphism Grove Subglacial Highlands East Antarctica PRINCE-CHARLES-MOUNTAINS AMERY ICE SHELF PRYDZ-BAY LARSEMANN HILLS GHATS BELT SM-ND RAUER GROUP RB-SR TEMPERATURE METAMORPHISM GEOCHEMICAL CONSTRAINTS |
spellingShingle |
Detrital zircon U-Pb age Hf isotopes Provenance Metamorphism Grove Subglacial Highlands East Antarctica PRINCE-CHARLES-MOUNTAINS AMERY ICE SHELF PRYDZ-BAY LARSEMANN HILLS GHATS BELT SM-ND RAUER GROUP RB-SR TEMPERATURE METAMORPHISM GEOCHEMICAL CONSTRAINTS Wang, Wei Liu, Xiaochun Zhao, Yue Zheng, Guanggao Chen, Longyao U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
topic_facet |
Detrital zircon U-Pb age Hf isotopes Provenance Metamorphism Grove Subglacial Highlands East Antarctica PRINCE-CHARLES-MOUNTAINS AMERY ICE SHELF PRYDZ-BAY LARSEMANN HILLS GHATS BELT SM-ND RAUER GROUP RB-SR TEMPERATURE METAMORPHISM GEOCHEMICAL CONSTRAINTS |
description |
To explore the geological evolution of the Grove Subglacial Highlands and their relationship with other terranes in the Prince Charles Mountains-Prydz Bay region of East Antarctica, 10 samples of metasedimentary rock were collected from glacial moraines in the Grove Mountains for zircon U-Pb dating and Hf isotopic analysis. Detrital zircon grains from all rocks have oscillatory zoned magmatic cores and diffusely zoned metamorphic rims. U-Pb ages from the cores are mainly concentrated in six populations: 3.4-3.2, 2.8, 2.6-2.3, 2.2-1.8, 1.8-1.5 and 1.5-0.95 Ga. Their initial stif values are -4.1 to +5.5, -12.5 to +4.9, -12.6 to +3.3, -13.0 to +4.7, -14.2 to +11.0, and -20.5 to +10.0, and their corresponding Hf model ages are 3.7-3.2, 3.4-3.1, 3.2-2.6, 2.9-2.1, 2.7-1.7, and 2.4-1.2 Ga, respectively. The maximum depositional ages of ca. 1090-940 Ma were calculated from the youngest detrital zircon cores of each sample. All age populations and Hf isotopic compositions can be found their provenances in the Prince Charles Mountains-Prydz Bay-Eastern Ghats region, indicating a genetic relationship between the two regions. However, we cannot rule out the possibility that the precursor materials of metasedimentary rocks from the Grove Subglacial Highlands were derived from the southern interior of the East Antarctic Shield (e.g., the Gamburtsev Subglacial Mountains and Vostok Subglacial Highlands). The late Mesoproterozoic/early Neoproterozoic (ca. 990-900 Ma) metamorphic event was not identified in our detrital zircon grains, and all metamorphic zircon rims were dated at ca. 560-540 Ma. This suggests that the collision suture of the late Neoproterozoic/Cambrian Prydz Belt should lie to the south of the Grove Subglacial Highlands. (C) 2016 Elsevier B.V. All rights reserved. Chinese Polar Environment Comprehensive Investigation & Assessment Programmes [CHINARE2015-02-05]; National Natural Science Foundation of China [41530209]; Geological Investigation Project of the China Geological Survey [12120113019000] SCI(E) ARTICLE liuxchqw@cags.ac.cn 135-150 275 |
author2 |
Wang, W; Liu, XC (reprint author), Chinese Acad Geol Sci, Inst Geomech, 11 Minzudaxue Nanlu, Beijing 100081, Peoples R China. Chinese Acad Geol Sci, Inst Geomech, 11 Minzudaxue Nanlu, Beijing 100081, Peoples R China. Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China. |
format |
Journal/Newspaper |
author |
Wang, Wei Liu, Xiaochun Zhao, Yue Zheng, Guanggao Chen, Longyao |
author_facet |
Wang, Wei Liu, Xiaochun Zhao, Yue Zheng, Guanggao Chen, Longyao |
author_sort |
Wang, Wei |
title |
U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
title_short |
U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
title_full |
U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
title_fullStr |
U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
title_full_unstemmed |
U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
title_sort |
u-pb zircon ages and hf isotopic compositions of metasedimentary rocks from the grove subglacial highlands, east antarctica: constraints on the provenance of protoliths and timing of sedimentation and metamorphism |
publisher |
PRECAMBRIAN RESEARCH |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11897/438403 https://doi.org/10.1016/j.precamres.2015.12.018 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(76.000,76.000,-80.500,-80.500) ENVELOPE(75.000,75.000,-72.750,-72.750) ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(77.833,77.833,-68.850,-68.850) ENVELOPE(102.000,102.000,-80.000,-80.000) |
geographic |
Amery Amery Ice Shelf Antarctic East Antarctica Gamburtsev Subglacial Mountains Grove Mountains Larsemann Hills Prince Charles Mountains Prydz Bay Rauer Group Vostok Subglacial Highlands |
geographic_facet |
Amery Amery Ice Shelf Antarctic East Antarctica Gamburtsev Subglacial Mountains Grove Mountains Larsemann Hills Prince Charles Mountains Prydz Bay Rauer Group Vostok Subglacial Highlands |
genre |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Shelf Prince Charles Mountains Prydz Bay |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Shelf Prince Charles Mountains Prydz Bay |
op_source |
SCI |
op_relation |
PRECAMBRIAN RESEARCH.2016,275,135-150. 1397250 0301-9268 http://hdl.handle.net/20.500.11897/438403 1872-7433 doi:10.1016/j.precamres.2015.12.018 WOS:000371841600010 |
op_doi |
https://doi.org/20.500.11897/438403 https://doi.org/10.1016/j.precamres.2015.12.018 |
container_title |
Precambrian Research |
container_volume |
275 |
container_start_page |
135 |
op_container_end_page |
150 |
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1766363725654130688 |
spelling |
ftpekinguniv:oai:localhost:20.500.11897/438403 2023-05-15T13:22:12+02:00 U-Pb zircon ages and Hf isotopic compositions of metasedimentary rocks from the Grove Subglacial Highlands, East Antarctica: Constraints on the provenance of protoliths and timing of sedimentation and metamorphism Wang, Wei Liu, Xiaochun Zhao, Yue Zheng, Guanggao Chen, Longyao Wang, W; Liu, XC (reprint author), Chinese Acad Geol Sci, Inst Geomech, 11 Minzudaxue Nanlu, Beijing 100081, Peoples R China. Chinese Acad Geol Sci, Inst Geomech, 11 Minzudaxue Nanlu, Beijing 100081, Peoples R China. Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China. 2016 https://hdl.handle.net/20.500.11897/438403 https://doi.org/10.1016/j.precamres.2015.12.018 en eng PRECAMBRIAN RESEARCH PRECAMBRIAN RESEARCH.2016,275,135-150. 1397250 0301-9268 http://hdl.handle.net/20.500.11897/438403 1872-7433 doi:10.1016/j.precamres.2015.12.018 WOS:000371841600010 SCI Detrital zircon U-Pb age Hf isotopes Provenance Metamorphism Grove Subglacial Highlands East Antarctica PRINCE-CHARLES-MOUNTAINS AMERY ICE SHELF PRYDZ-BAY LARSEMANN HILLS GHATS BELT SM-ND RAUER GROUP RB-SR TEMPERATURE METAMORPHISM GEOCHEMICAL CONSTRAINTS Journal 2016 ftpekinguniv https://doi.org/20.500.11897/438403 https://doi.org/10.1016/j.precamres.2015.12.018 2021-08-01T10:51:01Z To explore the geological evolution of the Grove Subglacial Highlands and their relationship with other terranes in the Prince Charles Mountains-Prydz Bay region of East Antarctica, 10 samples of metasedimentary rock were collected from glacial moraines in the Grove Mountains for zircon U-Pb dating and Hf isotopic analysis. Detrital zircon grains from all rocks have oscillatory zoned magmatic cores and diffusely zoned metamorphic rims. U-Pb ages from the cores are mainly concentrated in six populations: 3.4-3.2, 2.8, 2.6-2.3, 2.2-1.8, 1.8-1.5 and 1.5-0.95 Ga. Their initial stif values are -4.1 to +5.5, -12.5 to +4.9, -12.6 to +3.3, -13.0 to +4.7, -14.2 to +11.0, and -20.5 to +10.0, and their corresponding Hf model ages are 3.7-3.2, 3.4-3.1, 3.2-2.6, 2.9-2.1, 2.7-1.7, and 2.4-1.2 Ga, respectively. The maximum depositional ages of ca. 1090-940 Ma were calculated from the youngest detrital zircon cores of each sample. All age populations and Hf isotopic compositions can be found their provenances in the Prince Charles Mountains-Prydz Bay-Eastern Ghats region, indicating a genetic relationship between the two regions. However, we cannot rule out the possibility that the precursor materials of metasedimentary rocks from the Grove Subglacial Highlands were derived from the southern interior of the East Antarctic Shield (e.g., the Gamburtsev Subglacial Mountains and Vostok Subglacial Highlands). The late Mesoproterozoic/early Neoproterozoic (ca. 990-900 Ma) metamorphic event was not identified in our detrital zircon grains, and all metamorphic zircon rims were dated at ca. 560-540 Ma. This suggests that the collision suture of the late Neoproterozoic/Cambrian Prydz Belt should lie to the south of the Grove Subglacial Highlands. (C) 2016 Elsevier B.V. All rights reserved. Chinese Polar Environment Comprehensive Investigation & Assessment Programmes [CHINARE2015-02-05]; National Natural Science Foundation of China [41530209]; Geological Investigation Project of the China Geological Survey [12120113019000] SCI(E) ARTICLE liuxchqw@cags.ac.cn 135-150 275 Journal/Newspaper Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Shelf Prince Charles Mountains Prydz Bay Peking University Institutional Repository (PKU IR) Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Antarctic East Antarctica Gamburtsev Subglacial Mountains ENVELOPE(76.000,76.000,-80.500,-80.500) Grove Mountains ENVELOPE(75.000,75.000,-72.750,-72.750) Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Prydz Bay Rauer Group ENVELOPE(77.833,77.833,-68.850,-68.850) Vostok Subglacial Highlands ENVELOPE(102.000,102.000,-80.000,-80.000) Precambrian Research 275 135 150 |