Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2929
DC Field | Value | Language |
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dc.contributor.authorall | Bernaola, G.; Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.authorall | Baceta, J. I.; Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.authorall | Orue-Etxebarria, X.; Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.authorall | Alegret, L.; Área de Estratigrafía, Departamento de Ciencias de la Tierra, Universidad de Zaragoza, E-50009 Zaragoza, Spain | en |
dc.contributor.authorall | Martín-Rubio, M.; Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.authorall | Arostegui, J.; Departamento de Mineralogía y Petrología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.authorall | Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.date.accessioned | 2007-12-03T15:45:09Z | en |
dc.date.available | 2007-12-03T15:45:09Z | en |
dc.date.issued | 2007 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2929 | en |
dc.description.abstract | An abrupt environmental disruption occurred in the photic zone and at the seafl oor during the mid-Paleocene biotic event (MPBE). Calcareous nannoplankton, planktic foraminifer, and benthic foraminifer assemblages at Zumaia section (western Pyrenees) underwent a rapid and remarkable transformation. The major calcareous plankton assemblage changes suggest a shift from relatively cooler mesotrophic to warmer, more oligotrophic conditions, indicating a disturbed environment due to the warming of the ocean. Benthic foraminifer assemblages were also signifi cantly affected by the MPBE; diversity of the assemblages and buliminids show net decline and the low food and opportunistic taxa increase in abundance. The reorganization of the planktic ecosystem possibly involved changes in the food fl ux (type and quantity) to the seafl oor, thus triggering changes in the benthic communities. A 1‰ negative δ13C shift and a 30% carbonate content decrease are recorded in connection with the biotic event. This suggests that during the MPBE, as in the Paleocene- Eocene Thermal Maximum (PETM), an input of a large mass of isotopically depleted carbon into the ocean and atmosphere could have lowered the deep-sea pH, triggering a rapid shoaling of the lysocline and contributing to greenhouse warming. The MPBE was short lived: according to the counting of limestone-marl couplets, the stratigraphic expression of precession cycles throughout the Zumaia section, the MPBE lasted for ~52–53 k.y., with the core of the event representing ~10–11 k.y. The Zumaia section is the fi rst land-based locality in which the MPBE is recognized and described in detail. Due to its expanded character and excellent paleontological record, this section may prove to be a global reference section for the study of this shortlived event. | en |
dc.language.iso | English | en |
dc.relation.ispartof | GSA Bulletin | en |
dc.relation.ispartofseries | 7-8 / 119 (2007) | en |
dc.subject | mid-Paleocene biotic event | en |
dc.subject | calcareous | en |
dc.title | Evidences of an abrupt environmental disruption during the Mid Paleocene Biotic Event (Zumaia section, W Pyrenees) | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 785-795 | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy | en |
dc.identifier.doi | 10.1130/B26132.1 | en |
dc.description.obiettivoSpecifico | 2.2. Laboratorio di paleomagnetismo | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Bernaola, G. | en |
dc.contributor.author | Baceta, J. I. | en |
dc.contributor.author | Orue-Etxebarria, X. | en |
dc.contributor.author | Alegret, L. | en |
dc.contributor.author | Martín-Rubio, M. | en |
dc.contributor.author | Arostegui, J. | en |
dc.contributor.author | Dinarès-Turell, J. | en |
dc.contributor.department | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.department | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.department | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.department | Área de Estratigrafía, Departamento de Ciencias de la Tierra, Universidad de Zaragoza, E-50009 Zaragoza, Spain | en |
dc.contributor.department | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.department | Departamento de Mineralogía y Petrología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Stratigraphy and Palaeontology, Faculty of Science and Technology, University of the Basque Country, PO Box 644, E-48080 Bilbao, Spain | - |
crisitem.author.dept | Department of Stratigraphy, Univ. Basque Country, PO Box 644, E-48080 Bilbao, Spain | - |
crisitem.author.dept | Estratigrafía-Paleontología, Fac. Ciencias, UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain | - |
crisitem.author.dept | Department of Earth Sciences, Zaragoza University, E-50009 Zaragoza, Spain | - |
crisitem.author.dept | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | - |
crisitem.author.dept | Departamento de Mineralogía y Petrología, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado de correos 644, 48080 Bilbao, Spain | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.orcid | 0000-0002-5546-2291 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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