Geoffrey Gilleaudeau

Assistant Professor

George Mason University

United States

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Geoffrey Gilleaudeau is an Assistant Professor at George Mason University, USA. His research areas focus on geochemical cycles, particularly involving uranium and nitrogen isotopes, as well as the implications of these cycles for understanding historical ocean conditions and mass extinction events. His recent publications delve into topics such as marine anoxia, carbonate records, and the evolutionary links between terrestrial and marine environments across geological timescales.

Articles (14)

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2025

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2025

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2024

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2024

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2023

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2023

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2023

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2023

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2022

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2022

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2022

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2021

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2021

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2021

Collaborators (18)

Tais Dahl

Københavns Universitet

DENMARK

Geoffrey Gilleaudeau

Research Interests

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Articles (14)

Uranium isotope systematics of a low-productivity ferruginous ocean analog: Implications for the uranium isotope record of early Earth

Aerobic nitrogen cycling in a molybdenum-limited, redox-stratified Mesoproterozoic epeiric sea

Carbonate uranium isotopes record global expansion of marine anoxia during the Toarcian Oceanic Anoxic Event

Productivity and organic carbon loading control uranium isotope behavior in ancient reducing settings: Implications for the paleoredox proxy

Carbonate uranium isotopes across Cretaceous OAE 2 in southern Mexico: New constraints on the global spread of marine anoxia and organic carbon burial

Geochemical and Hydrographic Evolution of the Late Devonian Appalachian Seaway: Linking Sedimentation, Redox, and Salinity Across Time and Space

Mercury isotope evidence for recurrent photic-zone euxinia triggered by enhanced terrestrial nutrient inputs during the Late Devonian mass extinction

Basin-scale reconstruction of euxinia and Late Devonian mass extinctions

Uranium isotope cycling on the highly productive Peruvian margin

A diverse Ediacara assemblage survived under low-oxygen conditions

Major Early-Middle Devonian oceanic oxygenation linked to early land plant evolution detected using high-resolution U isotopes of marine limestones

The Sedimentary Geochemistry and Paleoenvironments Project

Curation and Analysis of Global Sedimentary Geochemical Data to Inform Earth History

Novel watermass reconstruction in the Early Mississippian Appalachian Seaway based on integrated proxy records of redox and salinity

Collaborators (18)

Tais Dahl

Sarah Carmichael

François L.H. Tissot

Robert Frei

Sarah Slotznick

Oyeleye Adeboye

Alan Rooney

Elizabeth Swanner

Benjamin Gill

Michael Neil Evans

Camille Partin

Akshay Mehra

Justin V. Strauss

Jochen Brocks

Donald E. Canfield

Jennifer Morford

Ariel Anbar

Silke Severmann

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