[S-CG51] Hybrid Geochronology beyond Zircon Geochronology

Thu. May 25, 2023 9:00 AM - 10:15 AM 202 (International Conference Hall, Makuhari Messe)

convener:Sota Niki(Geochemical Research Center, School of Science, The University of Tokyo), Hideki Iwano(Kyoto Fission-Track Co., Ltd.), Chairperson:Sota Niki(Geochemical Research Center, School of Science, The University of Tokyo), Hideki Iwano(Kyoto Fission-Track Co., Ltd.)

Zircon U-Pb ages play an important role in geochronology owing to recent advances in mass spectrometry utilized for rapid acquisition of high-precision zircon age data. In addition to zircon U-Pb ages, fission-track ages or trace element compositions of zircon are simultaneously analyzed and these multiple data derived from zircon are utilized for construction of chronological big data. However, zircon ages can record only limited geological phenomena depending on the occurrences of zircon and the nature of the zircon U-Pb system. To elucidate geological phenomena, therefore, the development of new chronometers utilizing a variety of minerals, such as apatite, garnet and monazite, and the applications of the novel dating methods to geological samples are essential.
In this session, we propose Hybrid Geochronology that integrates zircon chronology and insights provided by novel dating methods, and research presentations from all aspects of geochronology are welcomed.

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9:00 AM - 9:15 AM

[SCG51-01] Quaternary geochronology of monazite utilizing laser ablation-ICP-mass spectrometry

*Sota Niki¹, Shuhei Kosugi¹, Hideki Iwano^1,2, Tohru Danhara², Takafumi Hirata¹ (1.Geochemical Research Center, School of Science, The University of Tokyo, 2.KYOTO FISSION-TRACK Co.Ltd)

9:15 AM - 9:30 AM

[SCG51-02] Uranium - Lead Isotopic Geochronology on Quaternary Zircons using Multiple Collector-ICP-MS equipped with Faraday and Daly Ion Detectors

*Shuhei Kosugi¹, Sota Niki¹, Takafumi Hirata¹ (1.Geochemical Research Center, The University of Tokyo)

9:30 AM - 9:45 AM

[SCG51-03] TIMS Pb–Pb dating of ulvospinel in the angrite meteorite NWA 4590

*Ito Kengo¹, Magdalena Huyskens², Yuri Amelin³, Qing-Zhu Yin⁴, Tsuyoshi Iizuka¹ (1.The University of Tokyo, 2.Geological Survey of Norway, 3.Korea Basic Science Institute, 4.University of California, Davis)

9:45 AM - 10:00 AM

[SCG51-04] Multi-mineral geochronology of Na–Al-rich metasomatic rocks in serpentinites

*Tatsuki Tsujimori¹, Yasuhito Osanai² (1.Tohoku University, 2.Kyushu University)

10:00 AM - 10:15 AM

[SCG51-05] Simultaneous P-T-t estimation using titanite from the Tonaru body of the Sanbagawa metamorphic belt, central Shikoku, revealed another locality of 200 Ma pre-Sanbagawa metamorphism

*Kenta Yoshida¹, Sota Niki², Hikaru Sawada¹, Ryosuke Oyanagi³, Takafumi Hirata² (1.Japan Agency for Marine-Earth Science and Technology, 2.Geochemical Research Center, The University of Tokyo, 3.Kokushikan University)

Session information