Thu. May 25, 2023 9:00 AM - 10:15 AM 301A (International Conference Hall, Makuhari Messe)

[J] Oral
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Decoding the history of Earth: From Hadean to the present

convener:Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo), Yasuhiro Kato(Department of Systems Innovation, Graduate School of Engineering, University of Tokyo), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Kentaro Nakamura(Department of Systems Innovation, School of Engineering, University of Tokyo), Chairperson:Yasuto Watanabe(Meteorological Research Institute/University of Tokyo), Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo)

Thu. May 25, 2023 10:45 AM - 12:15 PM 301A (International Conference Hall, Makuhari Messe)

[J] Oral
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Decoding the history of Earth: From Hadean to the present

convener:Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo), Yasuhiro Kato(Department of Systems Innovation, Graduate School of Engineering, University of Tokyo), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Kentaro Nakamura(Department of Systems Innovation, School of Engineering, University of Tokyo), Chairperson:Satoshi Yoshida(Graduate School of Arts and Sciences, The University of Tokyo), Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo)

Fri. May 26, 2023 10:45 AM - 12:15 PM Online Poster Zoom Room (20) (Online Poster)

[J] Online Poster
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Decoding the history of Earth: From Hadean to the present

convener:Tsuyoshi Komiya(Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo), Yasuhiro Kato(Department of Systems Innovation, Graduate School of Engineering, University of Tokyo), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Kentaro Nakamura(Department of Systems Innovation, School of Engineering, University of Tokyo)

Mon. May 22, 2023 3:30 PM - 4:45 PM 201A (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-RE Resource and Engineering Geology

[H-RE11] Earth Resource Science

4:15 PM - 4:30 PM

[HRE11-08] Study on the mineralization age of the Akenobe polymetallic deposit in the southwest Japan, on the basis of Re-Os geochronology.

*Mitsuki Ogasawara¹, Junichiro Ohta^1,2, Mizuki Ishida¹, Kentaro Nakamura^1,2, Kazutaka Yasukawa¹, Koichiro Fujinaga^1,2, Yasuhiro Kato^1,2 (1.School of Engineering, The University of Tokyo, 2.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology)

Tue. May 23, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (1) (Online Poster)

[J] Online Poster
| H (Human Geosciences )
| H-RE Resource and Engineering Geology

[H-RE11] Earth Resource Science

1:45 PM - 3:15 PM

[HRE11-P04] Microscopic observation of mineral assemblage in the ore of the Kushikino deposit using SEM- EDS: Implications for silver isotopic analysis to elucidate the mineralization process

*Sho Yoshida¹, Yasuhiro Kato¹, Kentaro Nakamura¹, Koichiro Fujinaga¹, Kazutaka Yasukawa¹, Junichiro Ohta¹, Mizuki Ishida¹, Ogasawara Mitsuki¹ (1.School of Engineering, The University of Tokyo)

Tue. May 23, 2023 3:30 PM - 5:00 PM 301B (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG52] Ocean Floor Geoscience

3:30 PM - 3:45 PM

[SCG52-16] Age constraints of chemostratigraphic units in REY-rich mud around Minamitorishima Island with a deep learning-based image detection system for ichthyolith

*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, The University of Tokyo, 2.ORCeNG, Chiba Institute of Technology)

3:45 PM - 4:00 PM

[SCG52-17] Major and Trace Element Geochemistry of REY-rich Mud in the Penrhyn Basin, the central South Pacific Ocean

*Marshel Emmanuelle Tampah¹, Kazutaka Yasukawa¹, Junichiro Ohta¹, Kentaro Nakamura¹, Yasuhiro Kato¹ (1.School of Engineering, University of Tokyo)

Wed. May 24, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (6) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG52] Ocean Floor Geoscience

1:45 PM - 3:15 PM

[SCG52-P07] Hydrothermal plume survey at Higashi-Aogashima Knoll Caldera in the Izu-Bonin arc by shipboard multi-beam echo sounder

*Junji Kaneko¹, Takafumi Kasaya¹, Tatsuo Nozaki¹, Kazuhide Mimura², Youhei Sugimoto³, Hidenori Kumagai¹, Kentaro Nakamura⁴ (1.Japan Agency for Marine-Earth Science and Technology, 2.Chiba Institute of Technology, 3.NIPPON MARINE ENTERPRISES, 4.The University of Tokyo)

1:45 PM - 3:15 PM

[SCG52-P18] Characterization of the distribution mode of ferromanganese nodules around Minamitorishima Island based on a peak-fitting analysis of the acoustic backscatter intensity of the seafloor

*Wataru Sasaki¹, Kazutaka Yasukawa¹, Kentaro Nakamura¹, Siki Machida² (1.Department of Systems Innovation,School of Engineering, The University of Tokyo, 2.Ocean Resources Research Center for Next Generation)

1:45 PM - 3:15 PM

[SCG52-P19] Experimental study of analytical methods for marine osmium isotopes in pelagic clay using HCl leaching

*Mori Shunsuke¹, Junichiro Ohta^1,2, Kazutaka Yasukawa¹, Kentaro Nakamura^1,2, Koichiro Fujinaga^2,1, Yasuhiro Kato^1,2 (1.School of Engineering,The University of Tokyo, 2.ORCeNG, Chiba Institute of Technology)

1:45 PM - 3:15 PM

[SCG52-P20] Long-term variation of factors controlling REE-rich mud formation based on an ocean-sediment Nd mass balance simulation

*Ryosuke Matsunami¹, Kazutaka Yasukawa¹, Kentaro Nakamura¹, Yasuhiro Kato¹ (1.School of engineering, The University of Tokyo)

Mon. May 22, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (6) (Online Poster)

[J] Online Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG55] Driving Solid Earth Science through Machine Learning

1:45 PM - 3:15 PM

[SCG55-P06] Applicability of object detection to microfossil research: Implications from deep learning models to detect ichthyoliths using YOLO-v7

*Kazuhide Mimura^1,2, Kentaro Nakamura^2,1, Kazutaka Yasukawa², Elizabeth Sibert³, Junichiro Ohta^2,1, Yasuhiro Kato^2,1 (1.Chiba Institute of Technology, Ocean Resources Research Center for Next Generation, 2.School of Engineering, the University of Tokyo, 3.Department of Earth and Planetary Sciences, Yale University)

Thu. May 25, 2023 10:45 AM - 12:15 PM 301A (International Conference Hall, Makuhari Messe)

[J] Oral
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Decoding the history of Earth: From Hadean to the present

12:00 PM - 12:15 PM

[BCG07-11] Composite ages of REE-rich mud in the western North and South Pacific Ocean

*Erika Tanaka¹, Kazuhide Mimura², Junichiro Ohta³, Takashi Miyazaki⁴, Bogdan Stefanov Vaglarov⁴, Kazutaka Yasukawa³, Kentaro Nakamura³, Yasuhiro Kato³ (1.Kochi University, 2.Chiba Institute of Technology, 3.The University of Tokyo, 4.JAMSTEC)

Thu. May 25, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (14) (Online Poster)

[J] Online Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS13] New frontiers in geology

1:45 PM - 3:15 PM

[MIS13-P10] Origin and depositional setting of hematite-quartz schist of Sanbagawa metamorphic rocks in the Nagatoro area, Kanto Mountains, Japan

*Moei Yano^1,2, Kazutaka Yasukawa², Tatsuo Nozaki^3,2,4,1, Koichiro Fujinaga^1,2, Mitsuki Ogasawara², Kentaro Nakamura^2,1, Yasuhiro Kato^2,1 (1.Chiba Institute of Technology, 2.The University of Tokyo, 3.JAMSTEC, 4.Kobe University)

Tue. May 23, 2023 9:00 AM - 10:15 AM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS15] Paleoclimatology and Paleoceanography

9:15 AM - 9:30 AM

[MIS15-02] Factors for the long-term climatic trends in the early Eocene hothouse world: Implications from the seawater osmium isotope record of the Indian Ocean sediments

*Yusuke Kuwahara¹, Kazutaka Yasukawa^1,2, Junichiro Ohta^2,3, Moei Yano^3,2, Kazuhide Mimura^3,2, Erika Tanaka^4,3, Koichiro Fujinaga^3,2, Kentaro Nakamura^1,2, Yasuhiro Kato^1,2 (1.Department of Systems Innovation, School of Engineering, The University of Tokyo, 2.Frontier Research Center for Energy and Resources, School of Engineering, The University of Tokyo, 3.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 4.Center for Advanced Marine Core Research, Kochi University)

9:30 AM - 9:45 AM

[MIS15-03] Chemical characterization of multiple hyperthermal events in the early Paleogene Hothouse reconstructed from seafloor sediments of the Campbell Plateau, South Pacific Ocean

*Kazutaka Yasukawa¹, Erika Tanaka^2,3, Ann G. Dunlea⁴, Ingrid Hendy⁵, Bryan Niederbockstruck⁶, Ursula Röhl⁶, Minoru Ikehara², Kentaro Nakamura^1,3, Yasuhiro Kato^1,3 (1.School of Engineering, The University of Tokyo, 2.Center for Advanced Marine Core Research, Kochi University, 3.ORCeNG, Chiba Institute of Technology, 4.Woods Hole Oceanographic Institution, 5.University of Michigan, 6.MARUM - Center of Marine Environmental Sciences, University of Bremen)

Kentaro Nakamura

Convener, Chairperson

[B-CG07] Decoding the history of Earth: From Hadean to the present

[B-CG07] Decoding the history of Earth: From Hadean to the present

[B-CG07] Decoding the history of Earth: From Hadean to the present

Speaker, Author, Co-Author

[H-RE11] Earth Resource Science

[HRE11-08] Study on the mineralization age of the Akenobe polymetallic deposit in the southwest Japan, on the basis of Re-Os geochronology.

[H-RE11] Earth Resource Science

[HRE11-P04] Microscopic observation of mineral assemblage in the ore of the Kushikino deposit using SEM- EDS: Implications for silver isotopic analysis to elucidate the mineralization process

[S-CG52] Ocean Floor Geoscience

[SCG52-16] Age constraints of chemostratigraphic units in REY-rich mud around Minamitorishima Island with a deep learning-based image detection system for ichthyolith

[SCG52-17] Major and Trace Element Geochemistry of REY-rich Mud in the Penrhyn Basin, the central South Pacific Ocean

[S-CG52] Ocean Floor Geoscience

[SCG52-P07] Hydrothermal plume survey at Higashi-Aogashima Knoll Caldera in the Izu-Bonin arc by shipboard multi-beam echo sounder

[SCG52-P18] Characterization of the distribution mode of ferromanganese nodules around Minamitorishima Island based on a peak-fitting analysis of the acoustic backscatter intensity of the seafloor

[SCG52-P19] Experimental study of analytical methods for marine osmium isotopes in pelagic clay using HCl leaching

[SCG52-P20] Long-term variation of factors controlling REE-rich mud formation based on an ocean-sediment Nd mass balance simulation

[S-CG55] Driving Solid Earth Science through Machine Learning

[SCG55-P06] Applicability of object detection to microfossil research: Implications from deep learning models to detect ichthyoliths using YOLO-v7

[B-CG07] Decoding the history of Earth: From Hadean to the present

[BCG07-11] Composite ages of REE-rich mud in the western North and South Pacific Ocean

[M-IS13] New frontiers in geology

[MIS13-P10] Origin and depositional setting of hematite-quartz schist of Sanbagawa metamorphic rocks in the Nagatoro area, Kanto Mountains, Japan

[M-IS15] Paleoclimatology and Paleoceanography

[MIS15-02] Factors for the long-term climatic trends in the early Eocene hothouse world: Implications from the seawater osmium isotope record of the Indian Ocean sediments

[MIS15-03] Chemical characterization of multiple hyperthermal events in the early Paleogene Hothouse reconstructed from seafloor sediments of the Campbell Plateau, South Pacific Ocean