A study of U-Pb and Lu-Hf-Yb isotope data in zircons from metamorphosed psammopelite and quartzite from the type area of Archaean Sargur Group, Dharwar Craton, India is carried out. Two age populations are observed: an older population with concordant U-Pb ages between 2.7 and 2.8 Ga, and a younger population with ages in the 2.4-2.6 Ga age range. The. Hf values of 0 to +2.0 for the older zircon population suggest that they were derived from juvenile crust formed at 2.7-2.8 Ga. Sub-chondritic. Hf values for the younger population indicate metamorphism and/or crustal reworking at similar to 2.5 Ga. Meta-sedimentary enclaves in the Sargur type area are therefore part of the gneiss-supracrustal complex of different antiquities and may not have an independent stratigraphic status.
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Programa de Pós-graduacao em Geologia e Geoquímica-PPGG,Instituto de Geociencias-IG,Universidade Federal do Pará-UFPA
Laboratório de GeologiaPrograma de Pós-graduacao em Geologia e Geoquímica-PPGG,Instituto de Geociencias-IG,Universidade Federal do Pará-UFPA
Joao Marinho Milhomem Neto
JeanMichel Lafon
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Laboratório de GeologiaPrograma de Pós-graduacao em Geologia e Geoquímica-PPGG,Instituto de Geociencias-IG,Universidade Federal do Pará-UFPA
机构:
East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
East China Univ Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Li, Xiaocong
Luo, Xianwen
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East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
East China Univ Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Luo, Xianwen
Santosh, M.
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China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Santosh, M.
Cui, Yurong
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China Geol Survey, Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Cui, Yurong
Li, Quanzhong
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Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Li, Quanzhong
Lai, Dongrong
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East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Lai, Dongrong
Wan, Jianjun
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East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
East China Univ Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
Wan, Jianjun
Zhang, Xuefen
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East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
East China Univ Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R ChinaEast China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
机构:
China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R ChinaChina Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
Shi, Kangxing
Wang, Changming
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China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R ChinaChina Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
Wang, Changming
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Santosh, M.
Du, Bin
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China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R ChinaChina Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
Du, Bin
Yang, Lifei
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China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R ChinaChina Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
Yang, Lifei
Chen, Qi
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China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R ChinaChina Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China