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Nozaki Lab
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A lab that uses geochemistry to investigate how mineral resources on the seafloor and on land form.
AboutAbout the lab
Reading Earth’s history from how ore deposits form.
The Nozaki Lab studies how mineral resources on the seafloor and on land are formed.
Using geochemical methods, the lab examines seafloor mineral resources such as seafloor hydrothermal deposits and manganese nodules, as well as land-based ore deposits formed by similar mechanisms.
Studying how ore deposits form also helps reveal changes in past Earth environments.
The research combines fieldwork, research cruises, microscope observation, and chemical analysis.
Key terms
- Economic geology
- The study of how ore deposits, which are accumulations of metals and other materials, formed
- Seafloor hydrothermal deposits
- Mineral resources formed when metals accumulate where hot water vents from the seafloor
- Geochemistry
- The study of how the Earth works, based on the amounts and movements of elements in rocks and water
NewsLab news
A master’s student received the Student Presentation Award from the Society of Resource Geology
Professor Nozaki received the Most Interactive Presenter’s Award at the 17th Japan-America Frontiers of Engineering Symposium
The lab elucidated the “deep-sea power generation phenomenon” at seafloor hydrothermal vents
Professor Nozaki and a research assistant received the Outstanding Poster Award at the Japanese Society of Microscopy
Professor Nozaki received the Nishida Award from the Japan Geoscience Union
ResearchResearch themes
From the perspectives of economic geology and geochemistry, the Nozaki Lab aims to clarify how ore deposits formed (their genesis) and how Earth’s environment changed in the past. Centered on seafloor mineral resources and their land-based counterparts, the lab conducts research through fieldwork, research cruises, and chemical analysis.
*Illustrative imageGeochemistry of Seafloor Mineral Resources
The lab uses geochemical methods to study seafloor mineral resources such as seafloor hydrothermal deposits, manganese nodules, and manganese crusts, as well as land-based ore deposits formed by the same mechanisms.
*Illustrative imageResearch on Epithermal Gold Deposits
The lab conducts research that uses geochemistry to clarify how epithermal gold deposits, which form through the action of underground hydrothermal fluids, came to be.
*Illustrative imageReconstructing Global Environmental Change
The lab studies how Earth’s past environment has changed, interpreting it through its relationship with the way ore deposits form.
MembersFaculty
The Nozaki Lab consists of faculty members, researchers, research support staff, and master’s and undergraduate students.As of 2026
- ProfessorTatsuo Nozaki
- Lecturer (Fixed-Term)Yuji Gonoi
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Active hydrothermal vent- Mushroom (OOI 222)” Ocean Observatories Initiative / Public domain (cropped)
- Geochemistry of Seafloor Mineral Resources: “Deep Discoverer ferromanganese nodules North Atlantic 2021” Unidentified NOAA photographer / Public domain (cropped)
- Research on Epithermal Gold Deposits: “Gold-quartz hydrothermal vein in matrix (Amador County, California, USA) ( )” James St. John / CC BY 2.0 (cropped)
- Reconstructing Global Environmental Change: “AWI-core-archive hg” Hannes Grobe, AWI / CC BY-SA 2.5 (cropped)
- Related lab (Yamasaki Lab): “Zeolite & Fluorite ( )” Reimu Hakurei from Beijing, PRC / CC BY-SA 2.0 (cropped)
- Related lab (Okochi Lab): “ISS-46 Mount Fuji, Japan” NASA/Scott Kelly / Public domain (cropped)
- Related lab (Tokoro Lab): “Recycled Electronics - Circuit Boards ( )” Tony Webster from Minneapolis, Minnesota, United States / CC BY 2.0 (cropped)
- Related lab (Sasaki Lab): “Titanium(IV) oxide” Walkerma / Public domain (cropped)
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