PUMA
Istituto di Scienze Marine     
Roveri M., Taviani M. Calcarenite and sapropel deposition in the Mediterranean Pliocene: shallow- and deep-water record of astronomically driven climatic events. In: Terra Nova, vol. 15 (4) pp. 279 - 286. Blackwell Publishing Ltd, 2003.
 
 
Abstract
(English)
Calcarenitic bodies punctuate the shallow-water deposits of Plio-Pleistocene Mediterranean basins. Their rhythmic stacking pattern and stratigraphic distribution suggest a close relationship with deep-water sapropel cycles, whose development is controlled by periodic changes in the Earth's orbital parameters. Calcarenitic bodies occur as eccentricity-controlled clusters (over periods of 100-400 kyr) showing a time-correlation with sapropel clusters, starting from 3.1 Ma. Formation of individual calcarenites is possibly driven by obliquity and/or precession cyclicity. This has important implications both for an improved understanding of Mediterranean palaeoceanographic events and correlation of shallow- and deep-water successions. The appearance of sapropel and calcarenitic clusters starting from 3.1 Ma suggests a direct link with the onset of Northern Hemisphere glaciation, which could be responsible for the amplification of oceanographic events within the Mediterranean.
DOI: 10.1046/j.1365-3121.2003.00492.x
Subject polarity time-scale
early pleistocene
new-zealand
stratigraphy
timescale
neogene
area


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