Solid Earth Sciences (S) | ||
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Session Sub-category | Complex & General(CG) | |
Session ID | S-CG51 | |
Title | Hybrid Geochronology from Z to A | |
Short Title | Hybrid Geochronology | |
Main Convener | Name | Sota Niki |
Affiliation | Division for Chronological Research, Institute for Space-Earth Environmental Research, Nagoya University | |
Co-Convener 1 | Name | Ito Kengo |
Affiliation | The University of Tokyo | |
Co-Convener 2 | Name | Shuhei Sakata |
Affiliation | Earthquake Research Institute, The University of Tokyo | |
Co-Convener 3 | Name | Hideki Iwano |
Affiliation | Geochemical Research Center, The University of Tokyo | |
Session Language |
J |
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Scope |
Owing to recent advances of mass spectrometry for high-speed data acquisition, chronological data are increasingly available, especially for zircon U-Pb ages. Toward elucidation of geological processes utilising big data of zircon U-Pb ages, the combination of chronological data and data obtained from various research fields, such as geology and geochemistry, can become a powerful tool. Hence, high-speed acquisition of geological and geochemical data along with chronological data is important, and, for instance, improvements in elemental imaging analysis to derive geochemical data is desired. Despite the importance of zircon, zircon ages can record only limited geological processes depending on the occurrences of zircon and the nature of the zircon U-Pb system. Thus, our next move is to devise innovative approaches for radiometric dating methods to extend the applicable ranges of ages and materials. Reflecting on the meaning of radiometric ages derived from various minerals, and the development of dating methods for the minerals are essential for unveiling mechanisms of geological processes. In this session, we propose Hybrid Geochronology that integrates insights provided by multiple dating methods for various materials, and research presentations from all aspects of geochronology are welcomed. |
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Presentation Format | Oral and Poster presentation |
Time | Presentation No | Title | Presenter |
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Oral Presentation May 28 AM1 | |||
09:00 - 09:15 | SCG51-01 | Distribution of trace elements in ilmenite and mineralogical meaning of U–Pb dates | Ito Kengo |
09:15 - 09:30 | SCG51-02 | Late dry magmatism in back-arc basin recorded as dolerite dike intrusion in the Mado Megamullion, Shikoku Basin | Norikatsu Akizawa |
09:30 - 09:45 | SCG51-03 | Hematite U-Pb geochronology by LA-ICP-MS | Mayuko Fukuyama |
09:45 - 10:00 | SCG51-04 | Geochronological constraint on hydrothermal alteration process deduced from titanite U-Pb dating on the Tono Plutonic Complex, Kitakami Mountains | Yasuhiro Ogita |
10:00 - 10:15 | SCG51-05 | Development of a micron-resolution zircon U–Pb dating method using LA-ICP-MS | Shumpei Kudo |
10:15 - 10:30 | SCG51-06 |
Zircon-hosted melt and fluid inclusions as a trace of multiple orogenic events: the Bhimphedian orogeny overprinted by the Himalayan orogeny |
Nakajima Toru |
Oral Presentation May 29 AM1 | |||
09:00 - 09:15 | SCG51-07 | Geochronology of ultramafic complexes based on Pt–Os and Re–Os isotope systematics of platinum-group minerals | Sota Niki |
09:15 - 09:30 | SCG51-08 | Large heterogeneity in a small rock body—U-Pb dating and trace element imaging of Zr and Th minerals in a serpentinite body of the Sanbagawa metamorphic belt | Hikaru Sawada |
09:30 - 09:45 | SCG51-09 | Refined chronostratigraphy of the Miocene Nanto and Yatsuo groups in the Toyama basin, SW Japan, based on radiometric dates and stratigraphy | Raiki Yamada |
09:45 - 10:00 | SCG51-10 | Piacenzian oxygen isotope-magnetostratigraphy constrained by U-Pb dating of tephra beds from a marine sucession in central Japan | Yuki Haneda |
10:00 - 10:15 | SCG51-11 | Development of apatite U-Th disequilibrium system for geochronology of Late Pleistocene volcanics | Hideki Iwano |
Presentation No | Title | Presenter |
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Poster Presentation May 29 PM3 | ||
SCG51-P01 | 3D morphology of CAIs and distribution of refractory elements: Perovskite recording the nebular gas condensation | Ito Kengo |
SCG51-P02 | Hybrid geochronology using U-Pb, U−Th disequilibrium and fission-track for Late Pleistocene zircon | Hideki Iwano |
SCG51-P03 | 238U–230Th Disequilibrium Dating Method for Quaternary Zircons using Laser Ablation-Multiple Collector-ICP-Mass Spectrometry | Sota Niki |
SCG51-P04 | Development of practical measurement method for 238U-230Th-226Ra disequilibria in volcanic rocks using ICP-MS/MS | Shuhei Sakata |