Andrew P. Roberts

Dual Magnetite Formation Pathways in Abyssal Serpentinites From the Mid‐Atlantic Ridge

Abstract Serpentinization, which involves hydrothermal alteration of olivine and pyroxene in ultramafic rocks, generates magnetite and strongly modifies the magnetic properties of oceanic lithosphere. However, the microstructural pathways of magnetite formation and their bulk mag...

Equatorial Indian Ocean productivity over the last 200,000 years and links to deep circulation variations

Ocean circulation plays a key role in regulating atmospheric carbon dioxide levels during Pleistocene glacial-interglacial cycles. However, spatial responses of the oceans remain poorly constrained because reliable records from important carbon exchange regions, such as the equat...