Argentinian Holocene Transgression: Sidereal Ages

Miguel Angel Gonzalez, Nilda Ester Weiler


Chronological analyses identify Holocene transgressive episodes on some South American mid-latitudinal littorals, mainly in Argentina. 14C dates corrected to sidereal ones, are grouped in histograms, or bar diagrams, and define dominant transgressive episodes. The histograms indicate a weighting of dates to the maximum Holocene transgression around of 5500 yr BP, with major peaks up to the present. The warming hemicycle seems to be more extended than the colder one. Furthermore, a possibly time-transgressive eustatic 'wave' from south to north is suggested for the maximum Holocene transgression. That eustatic episode seems to have a differential shift in certain areas; in the Patagonian and Pampean regions, that transgressive 'wave' seems to be shifted at similar rate; meanwhile, Brazilian coasts show an almost-instantaneous rate of transgression at every latitude.


Argentina; eustasy; Holocene; geochronology; 14C carbon; sidereal dates

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