Session Oral

T10.［Topic Session］ Frontiers of Mineral Resources Research

[2oral111-23] T10.［Topic Session］ Frontiers of Mineral Resources Research

Mon. Sep 5, 2022 1:30 PM - 5:15 PM oral room 1 (Build. 14, 501)

Chiar:Shiki MACHIDA, Keishiro AZAMI

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1:30 PM - 2:00 PM

[T10-O-1] （Invited）The latest genetic model and initial formation process of seafloor hydrothermal deposit revealed by drilling cruises

*Tatsuo Nozaki^1,2,3,4 (1. JAMSTEC, 2. Univ. of Tokyo, 3. Kobe Univ., 4. ChibaTech)

2:00 PM - 2:15 PM

[T10-O-2] Mineralogical and geochemical studies of gold mineralisation in the Sado deposit, Niigata Prefecture, Japan

*Tomohiko SAWAZAKI¹, Mizuki ISHIDA¹, Junichiro OHTA^1,2, Kentaro NAKAMURA^1,2, Kazutaka YASUKAWA¹, Yasuhiro KATO^1,2 (1. School of Engineering, Univ. Tokyo, 2. ORCeNG, Chiba Institute of Technology)

2:15 PM - 2:30 PM

[T10-O-3] High-throughput spectral data analysis in laser-induced breakdown spectroscopy using the spectrum adapted ECM algorithm

*Tarojiro Matsumura¹, Tomoko Takahashi^2,4, Kenji Nagata³, Yasunobu Ando¹, Akira Yada¹, Tatsu Kuwatani² (1. Advanced Industrial Science and Technology (AIST), 2. Japan Agency for Marine-Earth Science and Technology, 3. National Institute for Materials Science, 4. The University of Tokyo)

2:30 PM - 2:45 PM

[T10-O-4] Age determination of REY-rich mud around Minamitorishima Island using ichthyolith biostratigraphy via a deep-learning-based image detection system

*Takahiro KITAZAWA¹, Kazuhide MIMURA^2,1, Kazutaka YASUKAWA¹, Junichiro Ohta^1,2, Koichiro FUJINAGA^2,1, Kentaro NAKAMURA^1,2, Yasuhiro KATO^1,2 (1. School of Engineering, Univ. Tokyo, 2. ORCeNG, Chiba Institute of Technology)

2:45 PM - 3:00 PM

[T10-O-5] Process of hydrothermal activity estimated from independent component analysis

*Keishiro AZAMI¹, Shiki MACHIDA², Naoto HIRANO³, Kentaro NAKAMURA⁴, Kazutaka YASUKAWA⁴, Tetsu KOGISO⁵, Yasuhiro KATO^4,2 (1. Waseda University, 2. Chiba Institute of Tecnology, 3. Tohoku University, 4. The University of Tokyo, 5. Kyoto University)

Cancelled

3:00 PM - 3:15 PM

[T10-O-6] Multivariate statistical analyses on chemical composition data of core samples drilled in seafloor hydrothermal deposits of the Okinawa Trough

*Kazutaka Yasukawa¹, Akito Aichi¹, Kentaro Nakamura^1,2, Tatsuo Nozaki^3,1,4,2, Yutaro Takaya^1,5,3, Mizuki Ishida¹, Yasuhiro Kato^1,2 (1. Univ. Tokyo, 2. Chiba Institute of Technology, 3. JAMSTEC, 4. Kobe Univ., 5. Waseda Univ.)

3:15 PM - 3:30 PM

[2oral111-23-7add] Break

3:30 PM - 3:45 PM

[T10-O-7] Statistical analyses on global geochemical data structure of deep-sea sediments

*Masahiro Hirako¹, Kazutaka Yasukawa¹, Kentaro Nakamura^1,2, Yasuhiro Kato^1,2 (1. Univ. of Tokyo, 2. CIT)

3:45 PM - 4:00 PM

[T10-O-8] Chemostratigraphy of Minamitorishima REY-rich mud: A new approach using machine learning

*Kentaro NAKAMURA¹ (1. The University of Tokyo)

4:00 PM - 4:15 PM

[T10-O-9] Downhole variations of mineral composition and grain size in a deep-sea sediment core with three REY peaks collected from the Minamitorishima EEZ

*Yuta ODA¹, Junichiro OHTA^1,2, Kazutaka YASUKAWA¹, Koichiro FUJINAGA^2,1, Kentaro NAKAMURA^1,2, Yasuhiro KATO^1,2 (1. School of Engineering, Univ. Tokyo, 2. ORCeNG, Chiba Institute of Technology)

4:15 PM - 4:30 PM

[T10-O-10] Analysis of growth history of ferromanganese nodules using the X-ray CT and the multichemical feature map

*Shiki MACHIDA^1,2, Kentaro NAKAMURA^2,1 (1. Ocean Resources Research Center for Next Generation (ORCeNG), Chiba Institute of Technology, 2. The University of Tokyo)

4:30 PM - 4:45 PM

[T10-O-11] Elemental mapping of nuclei of ferromanganese nodules in the Minamitorishima EEZ using µXRF

*Makoto YAZAKI¹, Kentaro NAKAMURA^1,2, Shiki Machida², Kazutaka Yasukawa¹, Koichiro Fujinaga^2,1, Yasuhiro Kato^1,2 (1. The University of Tokyo, 2. Chiba Institute Technology)

4:45 PM - 5:00 PM

[T10-O-12] Elucidating the timing and characteristics of a growth hiatus of the Minamitorishima ferromanganese nodules based on age dating through Os isotope stratigraphy and elemental mapping using μXRF

*Sota Aoyagi¹, Junichiro Ohta^1,2, Moei Yano², Kazuhide Mimura², Keishiro Azami³, Tatsuo Nozaki^4,1,5,2, Kentaro NAKAMURA^1,2, Kazutaka Yasukawa¹, Shiki Machida², Yasuhiro Kato^1,2 (1. The University of Tokyo, 2. Chiba institute of Technology, 3. Waseda University, 4. Japan Agency for Marine-Earth Science and Technology, 5. Kobe University)

5:00 PM - 5:15 PM

[T10-O-13] Os isotopic record during the Early Cretaceous seawater reconstructed from the Yokonami umber

*Koichiro Fujinaga^1,2, Moei Yano^1,2, Kazutaka Yasukawa², Kentaro Nakamura^2,1, Junichiro Ohta^2,1, Yusuke Kuwahara², Ken Nakayama³, Yasuhiro Kato^2,1 (1. CIT, 2. Univ. of Tokyo, 3. Kochi Univ.)

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