lanktonic foraminiferal biostratigraphy across the Eocene/Oligocene boundary in the North Adriatic Sea (CROSBI ID 606801)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Premec Fuček, Vlasta ; Hernitz Kučenjak, Morana
engleski
lanktonic foraminiferal biostratigraphy across the Eocene/Oligocene boundary in the North Adriatic Sea
The upper Eocene and lower Oligocene sediments from Istra more-3 and Istra more-4 wells, located on the eastern edge of the Venetian Basin, consist of hemipelagic deposits of marls and silty marls. These sediments contain abundant and very well preserved planktonic foraminiferal assemblages. The standard planktonic foraminiferal zonation of Paleogene after WADE et al. (2011) has been applied. The Eocene/Oligocene boundary in the Adriatic Sea is clearly defined by the extinction of all hantkeninids, the Turborotalia cerroazulensis group, and the last globigerinathekids species Globigerinatheka tropicalis, indicating strong climate deterioration and global cooling. Significant changes in small size fractions (<125μm) across the Eocene/Oligocene boundary have been observed. This boundary is also characterized by abundant occurrence of Chiloguembelina ototara, Tenuitella (T. praegemma, T. gemma) and by the first appearance of the tiny species Cassigerinella chipolensis.
planktonic foraminifera; biostratigraphy; Eocene/Oligocene boundary; Adriatic Sea
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Podaci o prilogu
21-21.
2013.
objavljeno
Podaci o matičnoj publikaciji
Strati 2013, 1st International Congress on Stratigraphy, Ciências da Terra, Volume Especial VII
Rocha, R., Pais, J., Kullberg, J. C., Castro, L., Caetano, P. & Legoinha, P.
Lisabon: Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia
978-972-8893-09-5
Podaci o skupu
Strati 2013, 1st International Congress on Stratigraphy
poster
01.07.2013-07.07.2013
Lisabon, Portugal