Oliver Warr

Assistant Professor

University of Ottawa

Canada

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About

Oliver Warr is an Assistant Professor at the University of Ottawa, Canada. His research primarily focuses on natural hydrogen and helium generation, the impact of CO2-charged fluids on terrestrial aquifers, and microbial community dynamics in deep groundwater systems. He has contributed to the understanding of Precambrian crust properties and hydrogeochronology through multiple recent publications.

Articles (17)

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2025

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2025

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2025

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2024

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2021

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2021

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2021

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2021

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2021

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2021

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2020

Collaborators (14)

Issaku Edward Kohl

Research Associate Professor

University of Utah

UNITED STATES

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Verena Heuer

University of Bremen

GERMANY

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Christopher House

Pennsylvania State University

UNITED STATES

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Tullis Onstott

Professor

Princeton University

UNITED STATES

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Peter M. Higgins

University of Toronto

CANADA

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John Mustard

Professor

Brown University

UNITED STATES

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Wolfgang Bach

Professor

University of Bremen

GERMANY

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Scott Perl

University of California, Los Angeles

UNITED STATES

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Grant Ferguson

Adjunct Professor

University of Arizona

UNITED STATES

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Stephanie Flude

University Of Strathclyde

UNITED KINGDOM

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Rebecca Tyne

The University of Manchester

UNITED KINGDOM

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Chris J. Ballentine

University of Oxford

UNITED KINGDOM

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Jeff Langman

Associate Professor of Hydrogeochemistry

University of Idaho

UNITED STATES

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Nivea Magalhaes

University of St. Andrews

UNITED KINGDOM

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Oliver Warr

Research Interests

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Articles (17)

Natural H2 and Sulfate Production via Radiolysis in Low Porosity and Permeability Crystalline Rocks

Passive degassing of lithospheric volatiles recorded in shallow young groundwater

Generation, migration and accumulation of natural hydrogen and helium in the intracratonic São Francisco Basin, eastern Brazil: implications for the understanding and exploration of natural H 2 systems

The impact of CO2-charged fluids on the aqueous geochemistry of terrestrial aquifers

Isotopic evidence of acetate turnover in Precambrian continental fracture fluids

Deep terrestrial indigenous microbial community dominated by Candidatus Frackibacter

The low permeability of the Earth’s Precambrian crust

Hydrogeochronology: Resetting the timestamp for subsurface groundwaters

Radiolytically reworked Archean organic matter in a habitable deep ancient high-temperature brine

86Kr excess and other noble gases identify a billion-year-old radiogenically-enriched groundwater system

Crustal Groundwater Volumes Greater Than Previously Thought

The role of low-temperature 18O exchange in the isotopic evolution of deep subsurface fluids

Rapid microbial methanogenesis during CO2 storage in hydrocarbon reservoirs

Advances in carbon isotope analysis of trapped methane and volatile hydrocarbons in crystalline rock cores

A window into the abiotic carbon cycle – Acetate and formate in fracture waters in 2.7 billion year-old host rocks of the Canadian Shield

High-resolution, long-term isotopic and isotopologue variation identifies the sources and sinks of methane in a deep subsurface carbon cycle

In Situ Growth of Halophilic Bacteria in Saline Fracture Fluids from 2.4 km below Surface in the Deep Canadian Shield

Collaborators (14)

Issaku Edward Kohl

Verena Heuer

Christopher House

Tullis Onstott

Peter M. Higgins

John Mustard

Wolfgang Bach

Scott Perl

Grant Ferguson

Stephanie Flude

Rebecca Tyne

Chris J. Ballentine

Jeff Langman

Nivea Magalhaes

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