Milankovitch climatic origin of mid-Cretaceous black shale rhythms in central Italy

Details Milankovitch climatic origin of mid-Cretaceous black shale rhythms in central Italy Milankovitch climatic origin of mid-Cretaceous black shale rhythms in central Italy

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..739h&link_type=abstract

Nature, Volume 321, Issue 6072, pp. 739-743 (1986).

Physics

32

Scientific paper

The Earth's orbital variations, reflected in Pleistocene ice volume, were also recorded in non-glacial times. Carbonate production in pelagic mid-Cretaceous sediments, quantified by calcium carbonate and optical densitometry time series, reflects the orbital eccentricity and precessional cycles. Minimal eccentricity brought deep-sea anoxia. Most of the sedimentary variability of this 100-Myr-old sequence lies within the Milankovitch (orbital) frequency band.

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