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。
作者
吴忠庆
赵国春
Zhongqing Wu;Guochun Zhao(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)
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).
