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DOI	10.1016/j.epsl.2021.116926
	Antiquity and tectonic lineage of Japanese Islands: New discovery of Archean–Paleoproterozoic Complex
	Kimura K.; Hayasaka Y.; Yamashita J.; Shibata T.; Kawaguchi K.; Fujiwara H.; Das K.
发表日期	2021
ISSN	0012821X
卷号	565
英文摘要	A new rock complex has been discovered from the Tsuwano area of Southwest Japan. This granitic rock complex namely, Tsuwano Complex contains foliated granitic gneiss, massive granitoids, and metaquartzite, forming a distinct unit at the westernmost end of the east-west elongate Maizuru Terrane. The above-mentioned litho-assemblage is characteristically different in appearance from the typical rocks of the Maizuru Terrane as well as the surrounding Jurassic and Permian accretionary rocks. We report here the zircon U-Pb LA-ICP-MS geochronological data of the rocks of this Tsuwano Complex. The comprehensive geochronological data indicate that this complex is much older than the surrounding rocks of the Maizuru Terrane. Zircon cores of the granitic gneiss yield possible magmatic age at ca. 2700 and 2500 Ma, while rim parts show a possible metamorphic age of ca. 1850 Ma. Associated dioritic to tonalitic granitoids also show a comparable age of crystallization at ca. 1850 Ma, indicating Neoarchean granitic rocks suffering a thermal overprinting and associated granitoid magmatism at Paleoproterozoic era. The exposed metaquartzite also yielded Neoarchean detrital zircon grains with the calculated maximum age of deposition at ca. 2430 Ma. While, all the other studied rocks including the grayish granitoids, felsic tuff, and metagabbro yield Paleozoic to Mesozoic ages. This is the first discovery of a Precambrian basement rock complex from the Japanese main islands. Based on the present geochronological dataset, we propose for a correlation and paleo-positioning of these basement rocks on the East Asian cratonic margin and a possible tectonic model of its evolution. © 2021 Elsevier B.V.
关键词	East Asia LA-ICP-MS zircon dating Maizuru Terrane Neoarchean–Paleoproterozoic North China Craton Tsuwano Complex
英文关键词	Buildings; Geochronology; Granite; Lead alloys; Mass spectrometers; Metamorphic rocks; Tectonics; Zircon; East Asia; Granitic gneiss; Granitic rocks; Granitoids; LA-ICP-MS zircon dating; Maizuru terrane; Neoarchean–paleoproterozoic; North China Craton; Paleoproterozoic; Tsuwano complex; Inductively coupled plasma mass spectrometry; Archean; basement rock; geochronology; granite; inductively coupled plasma method; Proterozoic; tectonic evolution; uranium-lead dating; zircon; Japan
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203162
作者单位	Department of Earth and Planetary Systems Science, Hiroshima University, Japan; National Institute of Technology, Kure College, Japan; Hiroshima Institute of Plate Convergence Region Research, Hiroshima University, Japan; Chuden Engineering Consultants Co., Ltd., Japan; Department of Earth and Environmental Sciences, Jeonbuk National University, South Korea; Yachiyo Engineering Co., Ltd., Japan
推荐引用方式 GB/T 7714	Kimura K.,Hayasaka Y.,Yamashita J.,等. Antiquity and tectonic lineage of Japanese Islands: New discovery of Archean–Paleoproterozoic Complex[J],2021,565.
APA	Kimura K..,Hayasaka Y..,Yamashita J..,Shibata T..,Kawaguchi K..,...&Das K..(2021).Antiquity and tectonic lineage of Japanese Islands: New discovery of Archean–Paleoproterozoic Complex.Earth and Planetary Science Letters,565.
MLA	Kimura K.,et al."Antiquity and tectonic lineage of Japanese Islands: New discovery of Archean–Paleoproterozoic Complex".Earth and Planetary Science Letters 565(2021).