Earth & Environmental Sciences Theses
Earth Sciences at St Andrews dates to the 17th Century, a rich tradition that shapes our vision for the future: to define the cutting edge of Earth, environmental, and planetary science, and deliver unparalleled student education.
Our research is both curiosity driven, addressing profound questions about the co-evolution of Earth and life, and applied, delivering societal and economic impact. It spans recent environmental change to planetary formation, underpinned by state-of-the-art analytical and field capabilities.
For more information please visit the School of Earth & Environmental Sciences home page.
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Recent Submissions
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Southern Ocean mechanisms of glacial CO₂ drawdown and their links with global climate
(2025-07-02) - ThesisThe Southern Ocean is a major player in Earth’s climate, regulating carbon exchange between the deep ocean and the atmosphere. However, its role under altered climate states is uncertain. In particular, the Southern Ocean ... -
Biological regulation of Earth's early atmosphere : metal isotope constraints on Neoarchaean methane cycling
(2022-06-15) - ThesisThe Great Oxidation Event (GOE, c.2.43 Ga) marks a fundamental change in the interaction between the biosphere, atmosphere, and Earth’s surface environment. Recent studies suggest that Earth’s anoxic pre-GOE atmosphere was ... -
The co-evolution of Earth's crust and hydrosphere : a silicon isotope perspective
(2024-06-13) - ThesisThe silicon isotope system is a well-established geochemical tool for tracing processes influenced by the interplay of Earth’s present-day crust and hydrosphere. While there is good understanding of stable silicon (Si) ... -
Development of a 1-D oxygen isotope photochemical model and its application to atmospheric O₂
(University of St Andrews, 2021-06-30) - ThesisOxygen is the second most abundant gas in the Earth’s atmosphere, but this has not always been the case. A suite of geochemical, palaeobiological, and geological proxies have been presented over the last few decades to ...
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