Solid Earth Sciences (S)
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
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.
Presentation Format Oral and Poster presentation
Time Presentation No Title Presenter
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
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