Biostratigraphic Correlation Between the Central Subbetic (Spain) and Umbro-Marchean (Italy) Pelagic Sequences at the Eocene/Oligocene Boundary Using Foraminifera.
1986; Elsevier BV; Linguagem: Inglês
10.1016/s0920-5446(08)70097-9
ISSN2352-2852
AutoresEustoquio Molina, Paolo Monaco, Marisa Nocchi, Guido Parisi,
Tópico(s)Paleontology and Stratigraphy of Fossils
ResumoThe most significant events, which occurred during the time interval spanning from the Late Eocene to the Early Oligocene, are preserved in the continous pelagic sequences of the Subbetic basin (Spain) and Umbro-Marchean basin (Italy). A comparative analysis has been carried out between events common to both areas, based on planktonic and benthic foraminifera. The relationship between Hantkeninidae and other selected taxa were used to identify and correlate the biozones identified in the two areas. We show that below the Eocene/Oligocene boundary several successive extinctions occur in the same order both in Spain and in Italy. Particularly, the Turborotalia cerroazulensis group extinction is slightly prior to the Hantkeninidae and large Pseudohastigerina extinctions, which latter mark the Eocene/Oligocene boundary.
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