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DOI | 10.1016/j.epsl.2021.116893 |
Evidence for crustal removal, tectonic erosion and flare-ups from the Japanese evolving forearc sediment provenance | |
Pastor-Galán D.; Spencer C.J.; Furukawa T.; Tsujimori T. | |
发表日期 | 2021 |
ISSN | 0012821X |
卷号 | 564 |
英文摘要 | Forearc basins preserve the geologic record relating strictly to arc magmatism. The provenance of forearc sediment can be used to differentiate periods of crustal growth, accretion, and destruction, enhanced magmatism, advancing and retreating subduction slabs, delamination, etc. These tectonic systems predict differing degrees of sedimentary reworking of the older forearc units. Additionally, Hf isotopes of zircon can be used to evaluate the degree of continental reworking that occurs in the arc system. In this paper, we evaluate the changes in a long-lived subduction system using detrital zircon U-Pb and Hf-isotope data from forearc units in northern Honshu, Japan that span in age from the Silurian Period to the present from the forearc provenance of the Japanese subduction system. Our data demonstrate a series of dominant age peaks (430 ± 20, 360 ± 10, 270 ± 20, 184 ± 12, 112 ± 22, and 7 ± 7 Ma) and a progressive loss of the older zircon populations. Zircon Hf-isotope data reveal three discrete shifts that correspond to differing degrees of isotopic enrichment and correlate with changes in the dominant zircon age peaks. Additionally, each temporal isotopic shift is associated with isolation of the older sedimentary packages wherein no detrital zircon from the previous stages are observed in subsequent stages. We propose these shifts provide evidence for rapid shifts in arc tectonics including magmatic flare-ups, producing the dominant peaks; protracted tectonic erosion progressively removing older sources of zircon reveals a late Carboniferous event triggering the complete removal of the Precambrian crust; and the Cretaceous melting of the entire Permian arc crust, likely related with the subduction of the mid-oceanic ridge separating the Izanagi and Pacific plates. © 2021 Elsevier B.V. |
关键词 | crustal growthdetrital zircongeochronologyLu-Hftectonic erosion |
英文关键词 | Binary alloys; Erosion; Hafnium alloys; Isotopes; Lead alloys; Sedimentology; Tectonics; Uranium alloys; Zircon; Crustal growth; Crustals; Detrital zircon; Fore-arc basin; Forearc; Hf isotope; Isotope data; Lu-hf; Sediment provenance; Tectonic erosion; Geochronology; continental crust; erosion; forearc basin; geochronology; hafnium; magmatism; provenance; reworking; Silurian; subduction; zircon; Honshu; 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/203247 |
作者单位 | Frontier Research Institute for Interdisciplinary Science, Tohoku University, Japan; Center for North East Asian Studies, Tohoku University, 41 Kawauchi, Aoba-ku, Miyagi, Sendai, 980-8576, Japan; Department Earth Science, Tohoku University, Japan; School of Earth and Planetary Sciences, The Institute for Geoscience Research (TIGeR), Curtin University, Perth, Australia; Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Canada |
推荐引用方式 GB/T 7714 | Pastor-Galán D.,Spencer C.J.,Furukawa T.,et al. Evidence for crustal removal, tectonic erosion and flare-ups from the Japanese evolving forearc sediment provenance[J],2021,564. |
APA | Pastor-Galán D.,Spencer C.J.,Furukawa T.,&Tsujimori T..(2021).Evidence for crustal removal, tectonic erosion and flare-ups from the Japanese evolving forearc sediment provenance.Earth and Planetary Science Letters,564. |
MLA | Pastor-Galán D.,et al."Evidence for crustal removal, tectonic erosion and flare-ups from the Japanese evolving forearc sediment provenance".Earth and Planetary Science Letters 564(2021). |
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