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Diagenesis of lower Cretaceous pelagic carbonates, North Atlantic: Paleoceanographic signals obscured

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Diagenesis of lower Cretaceous pelagic carbonates, North Atlantic: Paleoceanographic signals obscured; 1999; Article; Journal; Journal of Foraminiferal Research; Frank, T. D.; Arthur, M. A.; Dean, W. E.

Summary

The stable isotope and minor element geochemistry of Neocomian (Lower Cretaceous) pelagic carbonates of the North Atlantic Basin (Deep Sea Drilling Project Sites 105, 367, 387, 391, and 603) was examined to develop a diagenetic model for pelagic limestones. In particular, we hoped to test the fidelity of whole-rock geochemical records as paleoceanographic indicators for pelagic deposits of pre-Aptian age, in which individual microfossils are not available for analysis. Data indicate that in addition to depth of burial, rhythmic variations in primary carbonate content have strongly controlled diagenetic patterns and associated geochemical signatures in these Neocomian sequences. Samples become increasingly depleted in Sr and 18O with [...]

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Type Scheme Key
local-index unknown 70021186
local-pk unknown 70021186
series unknown Journal of Foraminiferal Research

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journalJournal of Foraminiferal Research
parts
typevolume
value29
typeissue
value4
languageEnglish
citationTypeArticle

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