North Atlantic marine biogenic silica accumulation through the early to middle Paleogene: implications for ocean circulation and silicate weathering feedback
Jakub Witkowski,Karolina Bryłka,Steven M. Bohaty,Elżbieta Mydłowska,Donald E. Penman,and Bridget S. Wade
Institute of Marine and Environmental Sciences, University of
Szczecin, ul. Mickiewicza 18, 70-383 Szczecin, Poland
Karolina Bryłka
Department of Geology, Faculty of Science, Lund University,
Sölvegatan 12, Lund, Sweden
Steven M. Bohaty
Schoool of Ocean and Earth Science, National Oceanography Centre
Southampton, University of Southampton, Waterfront Campus, European Way,
Southampton SO14 3ZH, UK
Elżbieta Mydłowska
Institute of Spatial Management and Socio-Economic Geography, ul.
Mickiewicza 18, 70-383 Szczecin, Poland
Donald E. Penman
Department of Geosciences, Utah State University, 4505 Old Main Hill, Logan, UT 84322, USA
We reconstruct the history of biogenic opal accumulation through the early to middle Paleogene in the western North Atlantic. Biogenic opal accumulation was controlled by deepwater temperatures, atmospheric greenhouse gas levels, and continental weathering intensity. Overturning circulation in the Atlantic was established at the end of the extreme early Eocene greenhouse warmth period. We also show that the strength of the link between climate and continental weathering varies through time.
We reconstruct the history of biogenic opal accumulation through the early to middle Paleogene...
