New biochronological scales of planktic foraminifera for the early danian based on high-resolution biostratigraphy

Arenillas, Ignacio (Universidad de Zaragoza) ; Gilabert, Vicente (Universidad de Zaragoza) ; Arz, José A. (Universidad de Zaragoza)

Resumen: After the Cretaceous/Paleogene boundary (KPB) catastrophic mass extinction event, an explosive evolutionary radiation of planktic foraminifera took place in consequence of the prompt occupation of empty niches. The rapid evolution of new species makes it possible to establish high-resolution biozonations in the lower Danian. We propose two biostratigraphic scales for low-to-middle latitudes spanning the first two million years of the Danian. The first is based on qualitative data and includes four biozones: the Guembelitria cretacea Zone (Dan1), the Parvularugoglobigerina longiapertura Zone (Dan2), the Parvularugoglobigerina eugubina Zone (Dan3), and the Parasubbotina pseudobulloides Zone (Dan4). The latter two are divided into several sub-biozones: the Parvularu-goglobigerina sabina Subzone (Dan3a) and the Eoglobigerina simplicissima Subzone (Dan3b) for the Pv. eugubina Zone, and the Praemurica taurica Subzone (Dan4a), the Subbotina triloculinoides Subzone (Dan4b), and the Globanomalina compressa Subzone (Dan4c) for the P. pseudobulloides Zone. The second scale is based on quantitative data and includes three acme-zones (abundance zones): the Guembelitria Acme-zone (DanAZ1), the Parvularugoglobigerina-Palaeoglobigerina Acme-zone (DanAZ2), and the Woodringina-Chiloguembelina Acme-zone (DanAZ3). Both biozonations are based on high-resolution samplings of the most continuous sections of the lower Danian worldwide and have been calibrated with recent magnetochronological and astrochronological dating.

Idioma: Inglés

DOI: 10.3390/geosciences11110479

Año: 2021

Publicado en: Geosciences (Switzerland) 11 (2021), 479 [26pp.]
ISSN: 2076-3263

Factor impacto CITESCORE: 4.8 - Earth and Planetary Sciences (Q2)

Factor impacto SCIMAGO: 0.641 - Earth and Planetary Sciences (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E33-20R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-077800
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/PGC2018-093890-B-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Paleontología (Dpto. Ciencias de la Tierra)