Helen Coxall

Helen Coxall is a Professor in Cenozoic Marine Micropaleontology at Stockholm University's Department of Geological Sciences, leading the Marine Geology group. Her research focuses on marine systems' responses to climate change, particularly through Eocene-Oligocene transition studies and Arctic Ocean dynamics. She has held prestigious fellowships including Royal Society and Royal Commission for the Exhibition of 1851 awards.

• BSc in Biology/Geology, University of Manchester
• PhD in Geology, University of Bristol, specializing in Hantkeninid planktonic foraminifera evolution and Eocene paleoceanography
• Postdoctoral positions at National Oceanography Centre (Eocene-Oligocene climate dynamics), University of Rhode Island (K/Pg boundary studies), and Smithsonian Institution (Eocene foraminifera taxonomy)

Her work utilizes marine sediment archives to reconstruct ocean temperature, ice volume, and productivity changes over 65 million years. Key methodologies include foraminifera isotopic analysis and paleoclimate modeling. Recent projects examine Arctic carbon fluxes, Greenland-Scotland Ridge tectonic effects, and Central Arctic ecosystem transitions.

Selected publications (2018-2011) demonstrate expertise in:

• Benthic foraminifera Mg/Ca calibrations for cold water paleothermometry
• North Atlantic Deep Water formation timing and Antarctic glaciation linkage
• Bering Strait reopening chronology and sea level dynamics
• Size-controlled isotopic fractionation in planktonic foraminifera
• Paleogene biomagnetochronology development
• Biological pump efficiency during mass extinction events

Scientific contributions include:

• Royal Commission for the Exhibition of 1851 Research Fellowship
• Royal Society University Research Fellowship
• Leadership in Arctic ocean-climate feedback studies
• Development of high-resolution paleoceanographic proxies

Teaching roles encompass undergraduate sedimentology, paleoceanography field courses, and graduate-level isotope geochemistry instruction. Current research projects address glacial melt impacts on Greenland fjords, Arctic bottom water temperature mapping, and Pleistocene plankton invasion patterns linked to modern climate analogues.

Marine Geology group activities focus on submarine landform analysis and sediment core interpretation across multiple ocean basins, maintaining collaborations with international drilling programs and Arctic research consortia.