Hydrous plumes in the Archean and the origin of continents  

含水地幔柱与太古宙大陆起源

作　　者：Zhongqing Wu Guochun Zhao 吴忠庆;赵国春(Deep Space Exploration Laboratory/School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Comparative Planetology,University of Science and Technology of China,Hefei 230026,China;National Geophysical Observatory at Mengcheng,University of Science and Technology of China,Mengcheng 253500,China;Department of Earth Sciences,the University of Hong Kong,Hong Kong,China;Department of Geology,State Key Laboratory of Continental Dynamics,Northwest University,Xi’an 710029,China)

机构地区：[1]Deep Space Exploration Laboratory/School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Comparative Planetology,University of Science and Technology of China,Hefei 230026,China [3]National Geophysical Observatory at Mengcheng,University of Science and Technology of China,Mengcheng 253500,China [4]Department of Earth Sciences,the University of Hong Kong,Hong Kong,China [5]Department of Geology,State Key Laboratory of Continental Dynamics,Northwest University,Xi’an 710029,China

出　　处：《Science Bulletin》2022年第20期2023-2025,M0003,共4页科学通报（英文版）

基　　金：supported by the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(XDB41000000);the National Key Research&Development Program of China(2018YFA0702703);the National Natural Science Foundation of China(41925017 and 41721002);the Fundamental Research Funds for theCentral Universities(WK2080000144).

摘　　要：The origin of continents,which is fundamentally important in understanding the evolution of Earth and its habitability,remains a highly debatable issue.The dominant rock types of Archean cratons are tonalite-trondhjemite-granodiorite(TTG)plutons.Extensive evidence suggests that Archean TTG rocks were formed from a hydrous mafic source[1-3].Subduction has been considered to be the only effective means of transporting a great amount of water to the mantle,leading to partial melting to generate a hydrous mafic crust,which can be regarded as the most possible source of the Archean TTG rocks.Hence,Arndt[2]argued that subduction zones are probably the sole setting in Earth to provide the three main ingredients of the Archean TTG。

关 键 词：Earth source MANTLE 

分 类 号：P534.2[天文地球—古生物学与地层学] P542[天文地球—地质学]