首页|Early Triassic Legoupil Formation in Schmidt Peninsula,Antarctic Peninsula:Provenance and Depositional Settings

Early Triassic Legoupil Formation in Schmidt Peninsula,Antarctic Peninsula:Provenance and Depositional Settings

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Geochemical compositions can be used to determine the tectonic setting of sedimentary basins,while where the link of source to sink is no longer preserved,detrital zircon age patterns can aid in resolving the original basin setting.The metasedimentary Legoupil Formation,located at Cape Legoupil and the Schmidt Peninsula,could give a hint for the tectonic evolution of Antarctic Peninsula.In this contribution,we constrain the sedimentary provenance of the Legoupil Formation through geo-chemistry and detrital zircon U-Pb geochronology.The petrography and geochemical features indicate that the provenance of the Legoupil Formation could be felsic rocks.Detrital zircon grains record a steady supply of Permian and Ordovician material into the Legoupil Formation.The youngest concor-dant zircon ages of 262 Ma suggest that the depositional time of Legoupil Formation is no older than Late Permian.The detrital zircon age spectrum of Legoupil Formation suggests that the Legoupil For-mation sediments should be derived from regional sources endemic to western Gondwana prior to its breakup.Together with the previous studies,geochemistry and detrital zircons reflect an active conti-nental margin tectonic setting and the detrital zircon spectra of Legoupil Formation are similar to the ones deposited in forearc tectonic setting.

Schmidt PeninsulaLegoupil FormationTrinity Peninsula Groupdetrital zirconsAntarctic Peninsulageochemistry

Chao Zhang、Ying-Chun Cui、Chen-Guang Liu、Fang-Hua Cui、Lu-Yuan Wang、Wei-Qiang Zhang

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School of Resources and Environmental Engineering,Shandong University of Technology,Zibo 255049,China

MNR Key Laboratory for Polar Science,Polar Research Institute of China,Shanghai 201209,China

Key Laboratory of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China

Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266061,China

Key Laboratory of Mineral Resources Evaluation in Northeast Asia,Ministry of Land and Resources,Changchun 130061,China

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国家自然科学基金国家自然科学基金Chinese Polar Environment Comprehensive Investigation&Assessment ProgramsChinese Polar Environment Comprehensive Investigation&Assessment ProgramsYoung Scientists Fund of Shandong ProvinceOpening Foundation of Key Laboratory of Mineral Resources Evaluation in Northeast Asia,Ministry of Land and Resources

4153020941802238CHIN-ARE 2015-02-05CHINARE 2017-04-03ZR2019PD010DBY-KF-19-15

2024

10.1007/s12583-021-1601-1

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(2)
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