Rhythmic bedding in Mesozoic- Cenozoic pelagic carbonate sequences: the primary and diagenetic origin of Milankovitch-like cycles.

Rhythmicity is a pronounced characteristic of nearly all Cretaceous and Cenozoic pelagic carbonate sequences whether deposited in shallow or deep-water environments. Proposes that periodic changes in insolation, evaporation, wind stress, and/or rainfall in a wide variety of environments caused changes in input of terrigenous detritus, water mass stratification, surface productivity, deepwater oxygen content, and rates of carbonate dissolution. A number of lines of evidence, including stable isotope and geochemical profiles across individual cycles support these inferences. -from Authors