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Micropaleontology and Paleoceanography Lab
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A lab that reads the history of past climate and environmental change from diatom fossils.
AboutAbout the lab
Tracing the history of Earth's climate through tiny fossils.
The Micropaleontology and Paleoceanography Lab studies the taxonomy, evolution, and paleoecology of fossil diatoms in Asia during the Cenozoic (from about 66 million years ago to the present), and how these relate to changes in climate and the environment.
The lab also works to reconstruct the history of Cenozoic climate and environmental change through multifaceted research using marine and lake sediments.
Recently, the lab has been studying the onset of Northern Hemisphere glaciation about 2.7 million years ago, examining the links among climate, continental ice sheets, and the ocean in the North Atlantic region.
Key terms
- Diatoms
- A group of tiny algae that live in the sea and in lakes. The lab uses their fossils as a key source of evidence.
- Glacial–interglacial cycles
- The repeated alternation between cold glacial periods and warm interglacial periods. The cycles began about 2.7 million years ago and continue to the present.
ResearchResearch themes
Going beyond the framework of micropaleontology centered on fossil diatoms, the lab uses a wide range of paleoenvironmental proxies to study how climate and the environment changed through the Cenozoic. The lab also works to clarify the mechanisms of abrupt climate change caused by interactions between deep-water circulation in the Atlantic and continental ice sheets and sea ice.
Taxonomy and Evolution of Fossil Diatoms
The lab studies the taxonomy, ecology, and evolutionary phenomena of Cenozoic marine and lake diatoms, and how these relate to changes in climate and the environment.
Reconstructing the History of Climate and Environmental Change
Through multifaceted research using marine and lake sediments, the lab reconstructs how climate and the environment changed through the Cenozoic.
The Onset of the Glacial–Interglacial Cycles
The lab is running a research project that analyzes various paleoenvironmental proxies to determine what caused the glacial–interglacial cycles to begin in the North Atlantic about 2.7 million years ago.
MembersFaculty
- Associate ProfessorTatsuya Hayashi
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