Extensive Resetting of Feldspar Pb Isotopic Composition in Archean–Paleoproterozoic Granitic Rocks from the Kongling Terrane,South China:Implications for Tracing Thermal Evolutionary History

作     者：MENG Fanxue LU Jie ZOU Zongqi GUO Jingliang MENG Yuanku MENG Fanxue;LU Jie;ZOU Zongqi;GUO Jingliang;MENG Yuanku

作者机构：College of Earth Science and EngineeringShandong University of Science and TechnologyQingdaoShandong 266590China Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China State Key Laboratory of Geological Processes and Mineral ResourcesSchool of Earth SciencesChina University of GeosciencesWuhan 430074China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2024年第98卷第2期

页      面：386-398页

核心收录：

学科分类：070902[理学-地球化学] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by the Key Laboratory of Gold Mineralization Processes and Resource Utilization,MNR Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization(Grant No.KFKT202103) National Natural Science Foundation of China(Grant No.41876037) 

主　　题：in situ Pb isotope Pb isotope resetting thermal event Archean-Paleoproterozoic Kongling terrane 

摘      要：Feldspar Pb isotopes have been widely used to trace magmatic formation and evolution ***,it remains unclear whether post-magmatic thermal events can affect feldspar Pb isotopic ***,the in situ Pb isotopic composition of feldspar hosted in granitic rocks(thirteen Archean and one Paleoproterozoic)from the northern Kongling terrane,Yangtze Craton,South China,is *** samples reveal a substantial variation in their Pb isotopic composition,spanning the gap between the 1.9 Ga and present-day geochrons,which indicates extensive resetting by later tectonothermal *** resetting was interpreted to have likely resulted from Paleoproterozoic and Neoproterozoic tectonothermal events related to the assembly and breakup of the Columbia and Rodinia *** results suggest that Pb isotopes should be used cautiously when tracing magma sources and petrogenesis in magmatic rocks that have experienced post-magmatic ***,the in situ Pb isotopic composition of feldspar in ancient granitoids may also potentially be used to reveal later tectonothermal *** extensive resetting of the Pb isotopic composition in feldspar by regional thermal events may also provide new insights into our understanding of the Pb isotope paradox.