In situ low-U garnet U-Pb dating by LA-SF-ICP-MS and its application in constraining the origin of Anji skarn system combined with Ar-Ar dating and Pb isotopes
Ore Geology Reviews(2021)
摘要
•91500 is an ideal reference material for garnet U-Pb dating in spot sizes of 32–16 μm.•Willsboro is not suitable to calibrate the garnets with relatively high common lead.•Anji skarn system (137–138 Ma) has a genetic relationship with fine-grained granite.•Mantle-sourced materials may play an important role to form the Anji skarn system.
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关键词
LA-SF-ICP-MS,Garnet U-Pb dating,91500 and Willsboro,Genetic relationship,Anji polymetallic skarn deposit
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