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Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications

Xiaowan Xing Yuejun Wang Yuzhi Zhang

Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications[J]. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
引用本文: Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications[J]. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
Citation: Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3

Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications

doi: 10.1007/s12583-015-0647-3

Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications

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出版历程
  • 收稿日期:  2016-06-13
  • 修回日期:  2016-06-13
  • 刊出日期:  2016-06-13

Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications

doi: 10.1007/s12583-015-0647-3

摘要: The Wuliangshan Group occurs to the east of the Lancang giant igneous zone in SW Yunnan, and is mainly composed of low-grade metamorphosed sedimentary rocks. The group has been considered as the syn-orogenic product of the Baoshan with Simao-Indochina blocks. However, its depositional time and provenance remain to be poorly constrained. This paper presents zircon U-Pb dating and Lu-Hf-isotopic data for five representative sandstone samples from the Wuliangshan Group. The detrital grains yield a major age-peak at ~259 Ma, and four subordinary age-peaks at ~1 859, ~941, ~788, and ~447 Ma, respectively. Our results suggest that the Wuliangshan metasedimentary sequence was deposited after Middle Triassic rather than previously-thought Cambrian. The detrital zircon age spectrum, along with in-situ Lu-Hf isotopic data suggest that the Wuliangshan Group might be a syncollisional sedimentary product related to the collision of Baoshan with Simao-Indochina blocks. It is inferred that the provenance of the Wuliangshan Group is mainly from the Simao/Yangtze blocks to the east rather than the Baoshan Block or Lancang igneous zone to the west.

English Abstract

Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications[J]. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
引用本文: Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications[J]. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3
Citation: Xiaowan Xing, Yuejun Wang, Yuzhi Zhang. Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications. Journal of Earth Science, 2016, 18(3): 412-424. doi: 10.1007/s12583-015-0647-3

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