New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy

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 biozona...

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Autores principales:	Ignacio Arenillas, Vicente Gilabert, José A. Arz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	planktic foraminiferal biozonation acme-zonation biochronology lower Danian magnetochronological-astronomical calibration Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/25620b180f7c4fd99991b3af40eacacc
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spelling	oai:doaj.org-article:25620b180f7c4fd99991b3af40eacacc2021-11-25T17:43:20ZNew Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy10.3390/geosciences111104792076-3263https://doaj.org/article/25620b180f7c4fd99991b3af40eacacc2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3263/11/11/479https://doaj.org/toc/2076-3263After 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 <i>Guembelitria cretacea</i> Zone (Dan1), the <i>Parvularugoglobigerina longiapertura</i> Zone (Dan2), the <i>Parvularugoglobigerina eugubina</i> Zone (Dan3), and the <i>Parasubbotina pseudobulloides</i> Zone (Dan4). The latter two are divided into several sub-biozones: the <i>Parvularugoglobigerina sabina</i> Subzone (Dan3a) and the <i>Eoglobigerina simplicissima</i> Subzone (Dan3b) for the <i>Pv. eugubina</i> Zone, and the <i>Praemurica taurica</i> Subzone (Dan4a), the <i>Subbotina triloculinoides</i> Subzone (Dan4b), and the <i>Globanomalina compressa</i> Subzone (Dan4c) for the <i>P. pseudobulloides</i> Zone. The second scale is based on quantitative data and includes three acme-zones (abundance zones): the <i>Guembelitria</i> Acme-zone (DanAZ1), the <i>Parvularugoglobigerina-Palaeoglobigerina</i> Acme-zone (DanAZ2), and the <i>Woodringina-Chiloguembelina</i> 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.Ignacio ArenillasVicente GilabertJosé A. ArzMDPI AGarticleplanktic foraminiferal biozonationacme-zonationbiochronologylower Danianmagnetochronological-astronomical calibrationGeologyQE1-996.5ENGeosciences, Vol 11, Iss 479, p 479 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	planktic foraminiferal biozonation acme-zonation biochronology lower Danian magnetochronological-astronomical calibration Geology QE1-996.5
spellingShingle	planktic foraminiferal biozonation acme-zonation biochronology lower Danian magnetochronological-astronomical calibration Geology QE1-996.5 Ignacio Arenillas Vicente Gilabert José A. Arz New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
description	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 <i>Guembelitria cretacea</i> Zone (Dan1), the <i>Parvularugoglobigerina longiapertura</i> Zone (Dan2), the <i>Parvularugoglobigerina eugubina</i> Zone (Dan3), and the <i>Parasubbotina pseudobulloides</i> Zone (Dan4). The latter two are divided into several sub-biozones: the <i>Parvularugoglobigerina sabina</i> Subzone (Dan3a) and the <i>Eoglobigerina simplicissima</i> Subzone (Dan3b) for the <i>Pv. eugubina</i> Zone, and the <i>Praemurica taurica</i> Subzone (Dan4a), the <i>Subbotina triloculinoides</i> Subzone (Dan4b), and the <i>Globanomalina compressa</i> Subzone (Dan4c) for the <i>P. pseudobulloides</i> Zone. The second scale is based on quantitative data and includes three acme-zones (abundance zones): the <i>Guembelitria</i> Acme-zone (DanAZ1), the <i>Parvularugoglobigerina-Palaeoglobigerina</i> Acme-zone (DanAZ2), and the <i>Woodringina-Chiloguembelina</i> 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.
format	article
author	Ignacio Arenillas Vicente Gilabert José A. Arz
author_facet	Ignacio Arenillas Vicente Gilabert José A. Arz
author_sort	Ignacio Arenillas
title	New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
title_short	New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
title_full	New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
title_fullStr	New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
title_full_unstemmed	New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy
title_sort	new biochronological scales of planktic foraminifera for the early danian based on high-resolution biostratigraphy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/25620b180f7c4fd99991b3af40eacacc
work_keys_str_mv	AT ignacioarenillas newbiochronologicalscalesofplankticforaminiferafortheearlydanianbasedonhighresolutionbiostratigraphy AT vicentegilabert newbiochronologicalscalesofplankticforaminiferafortheearlydanianbasedonhighresolutionbiostratigraphy AT joseaarz newbiochronologicalscalesofplankticforaminiferafortheearlydanianbasedonhighresolutionbiostratigraphy
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New Biochronological Scales of Planktic Foraminifera for the Early Danian Based on High-Resolution Biostratigraphy

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