Determinación del límite Mioceno-Plioceno y reconocimiento del Plioceno Inferior en Tomares (Sevilla)
DOI:
https://doi.org/10.3989/egeol.88443-4547Keywords:
Planktonic foraminifera, Míocene-Plioceneboundary, Tomares (Sevilla)Abstract
Planktonic foraminifera from 53 samples coming from Tomares (El Aljarafe, Sevilla) were investigated, allowing the identification of three biozones: GloborotaJúl margaritse-Globoquadrina dehiscens Zone, Globorotalia puncticuJats s.l. Zone and Globorotalia crassaiormis Zone. The first one is assigned to the Upper Messinian and otbers to tbe Zanclian. The first evolutionary appearance of Globorotalia puncticulata sphericomiozea is virtually syncbronous with the extinction of Globoquadrina debiscens and the last event may serve as useful criteria in determining the position of the Miocene-Pliocene boundary.
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