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Geological Society, London, Special Publications; 1987; v. 31; p. 13-22;
DOI: 10.1144/GSL.SP.1987.031.01.03
© 1987 Geological Society of London

Areal sedimentation rate patterns of the southern Nares Abyssal Plain, western N Atlantic

A. Kuijpers & E. J. Th. Duin

Geological Survey of The Netherlands, P.O. Box 157, 2000 AD Haarlem, The Netherlands
University of Göteborg, Department of Marine Geology, Box 7064, S-40232 Göteborg, Sweden

G. J. de Lange

Institute of Earth Sciences, Department of Geochemistry, State University of Utrecht, P.O. Box 80.021, 3508 TA Utrecht, The Netherlands

The Nares Abyssal Plain (NAP) consists of pelagic and turbiditic sediments, which are difficult to date owing to a lack of microfossils. Lithological, geochemical and seismic records indicate that relative accumulation rates of late Quaternary turbiditic sediments in the NAP decrease eastward by more than a factor of 2. Significant lateral variations of the sedimentation rate also occur; a maximum average sedimentation rate of several decimetres per 1000 years has been deduced. The high accumulation rates result from deposition from distal turbidity flows that were entrained via a high-energy abyssal-current system from the N American continental slope or rise into the southern NAP.