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Mid-Cretaceous radiolarian zonation for the North Atlantic: an example of oceanographically controlled evolutionary processes in the marine biosphere? Erbacher, J.; Thurow, J. (1998). Mid-Cretaceous radiolarian zonation for the North Atlantic: an example of oceanographically controlled evolutionary processes in the marine biosphere?, in: Cramp, A. et al. Geological evolution of ocean basins: results from the Ocean Drilling Program. Geological Society Special Publication, 131: pp. 71-82. https://dx.doi.org/10.1144/GSL.SP.1998.131.01.05 In: Cramp, A. et al. (1998). Geological evolution of ocean basins: Results from the Ocean Drilling Program. Geological Society Special Publication, 131. Geological Society: London. ISBN 1-86239-003-7. XI, 323 pp. In: Hartley, A.J. et al. (Ed.) Geological Society Special Publication. Geological Society of London: Oxford; London; Edinburgh; Boston, Mass.; Carlton, Vic.. ISSN 0305-8719; e-ISSN 2041-4927, meer Is gerelateerd aan: (1998). Erratum: Mid-Cretaceous radiolarian zonation for the North Atlantic: an example of oceanographically controlled evolutionary processes in the marine biosphere?, in: Cramp, A. et al. Geological evolution of ocean basins: results from the Ocean Drilling Program. Geological Society Special Publication, 131: pp. 317. https://dx.doi.org/10.1144/GSL.SP.1998.131.01.21, meer

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Trefwoorden

A, North Atlantic AE, North Atlantic AN, North Atlantic AS, North Atlantic ASW, North Atlantic AW, North Atlantic Drilling Ecological zonation Water > Deep water Water bodies > Oceans Noord Atlantisch [Marine Regions]; North Atlantic Ocean [Marine Regions]; North Atlantic Ocean [Marine Regions]; North Atlantic Ocean [Marine Regions]; North Atlantic Ocean [Marine Regions]; North Atlantic Ocean [Marine Regions]

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Auteurs		Top
Erbacher, J. Thurow, J.

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Abstract

Mid-Cretaceous (Aptian-Turonian) sediments from seven Deep Sea Drilling Project and Ocean Drilling Program sites in the North Atlantic have been investigated in order to establish a mid-Cretaceous radiolarian biostratigraphy for the North Atlantic. One of the results, a new zonation for mid-Cretaceous North Atlantic radiolaria, is presented here. From parallel investigations of calcareous sections in central Italy an accurate calibration to standard planktonic foraminiferal zonations is possible. The evolution of mid-Cretaceous radiolaria appears to be strongly related to sea-level changes, nutrient supply and the extension of the oxygen minimum zone. A model was proposed that explains extinction/radiation events of mid-Cretaceous radiolaria as being controlled by sea-level fluctuations and resulting changes of productivity. These are the parameters that control the dimensions of the oxygen minimum zone, the fluctuation of which destroys and creates habitats.

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