EVENTS
Events
Event Date: October 22, 2025, 12:10 PM – 12:50 PM
Brown Bag Seminar
Q-AOS Brown Bag Seminar Series The 208th Seminar “Reconstruction of Early Earth Seafloor Environments at 3.2 Ga: Hydrothermal Activity and Iron Precipitation”
九州大学アジア・オセアニア研究教育機構（Q-AOS）では「Brown Bag Seminar Series」を毎週水曜日のランチタイムに開催いたします。本学のアジア・オセアニア地域やSDGsに関連する最新の研究活動を多くの方に知っていただき、異分野研究ネットワークや交流やきっかけの場を提供できればと思います。どなたでも気軽に御参加いただける内容となっております。途中参加、途中退室もOKです。皆様の御参加をお待ちしております。
Details
- Date
- 2025/10/22 12:10 ~ 2025/10/22 12:50
- Style
- Zoom Webinar
- Language
- Bilingual Japanese-English support (simultaneous interpretation)
- Admission Fee
- Free
- The maximum number for the webinar participants
- 500 people
- Contact
- Person：Kyushu University Q-AOS Administrative Office
TEL：+81-92-802-2603・2605
E-mail：aoevent★jimu.kyushu-u.ac.jp（Please change ★ to @）
Abstract
The history of the Earth can be divided into four major intervals: the Hadean (4.6–4 billion years ago), the Archean (4–2.5 billion years ago), the Proterozoic (2.5–0.54 billion years ago), and the Phanerozoic (0.54 billion years ago to the present). This seminar focuses on the Archean, the era when continents first began to form and the earliest life appeared. from a magma ocean and gradually forming oceans and land. During the Archean, volcanic activity and seafloor hydrothermal systems were widespread, and early life thrived in these environments. Here, we introduce reconstructions of a seafloor environment about 3.2 billion years ago in the Pilbara region of Western Australia, and also present examples of modern hydrothermal activity and iron precipitation at Satsuma Iwo-jima, which evoke conditions similar to those of the Archean.
Program
12:10 – 12:15 Introduction
Mami Wakabayashi, Associate Professor (Q-AOS Coordinator)
12:15 – 12:40 “Reconstruction of Early Earth Seafloor Environments at 3.2 Ga: Hydrothermal Activity and Iron Precipitation”
Associate Professor Shoichi Kiyokawa
(Faculty of Science Department of Earth and Planetary Sciences)
12:40 – 12:50 Q&A
*The recorded video will be available on our website at a later date for a limited time.
Please check the archive of BBS from here.
Mami Wakabayashi, Associate Professor (Q-AOS Coordinator)
12:15 – 12:40 “Reconstruction of Early Earth Seafloor Environments at 3.2 Ga: Hydrothermal Activity and Iron Precipitation”
Associate Professor Shoichi Kiyokawa
(Faculty of Science Department of Earth and Planetary Sciences)
12:40 – 12:50 Q&A
*The recorded video will be available on our website at a later date for a limited time.
Please check the archive of BBS from here.
Material
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