Les foraminifères du Paléocène et de l'Éocène basal du sillon nord-pyrénéen (Aquitaine, France)

Sztràkos, Kàroly

doi:10.1016/j.revmic.2005.06.001

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…Bolivinoides crenulata has been reported at middle bathyal abyssal paleodepth in late Paleocene‐middle Eocene sediments [ Sztrákos , 2005; Nomura and Takata , 2005; Ortiz and Thomas , 2006], but its upper depth limit is unknown. Angulogerina muralis, a common taxon at Farra, has been considered typical of sublittoral to upper bathyal depths in late Eocene–early Oligocene sediments of Spain [ Molina et al , 2006], but it is also common in middle bathyal sediments of Ypresian‐Lutetian of Spain [ Ortiz and Thomas , 2006].…”

Section: Resultsmentioning

confidence: 99%

An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response

et al. 2009

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[1] At least two transient events of extreme global warming occurred superimposed on the long-term latest Paleocene and early Eocene warming trend in the Paleocene-Eocene thermal maximum (PETM) (or ETM1 $55.5 Ma) and the Elmo (or ETM2 $53.6 Ma). Other than warmth, the best known PETM is characterized by (1) significant injection of 13 C-depleted carbon into the ocean-atmosphere system, (2) deep-sea carbonate dissolution, (3) strong biotic responses, and (4) perturbations of the hydrological cycle. Documentation of the other documented and suspected ''hyperthermals'' is, as yet, insufficient to assess whether they are similar in nature to the PETM. Here we present and discuss biomagnetostratigraphic data and geochemical records across two lower Eocene successions deposited on a continental margin of the western Tethys: the Farra and Possagno sections in the Venetian pre-Alps. We recognize four negative carbon isotope excursions within chron C24. Three of these shifts correlate to known or suspected hyperthermals: the PETM, the Eocene thermal maximum 2 ($53.6 Ma), and the informally named ''X event'' ($52.5 Ma). The fourth excursion lies within a reverse subchron and occurred between the latter two. In the Farra section, the X event is marked by a $0.6% negative carbon isotope excursion and carbonate dissolution. Furthermore, the event exhibits responses among calcareous nannofossils, planktic foraminifera, and dinoflagellates that are similar to, though less intense than, those observed across the PETM. Sedimentological and quantitative micropaleontological data from the Farra section also suggest increased weathering and runoff as well as sea surface eutrophication during this event.

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Section: Resultsmentioning

confidence: 99%

An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response

et al. 2009

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“…Throughout the investigated section, many taxa occur with an upper bathyal upper depth limit or are common at bathyal depths, e.g., Bolivina antegressa group, Osangularia pteromphalia, Rectuvigerina mexicana, Cibicidoides eocaenus, C. hettneri, C. micrus, Bulimina tuxpamensis, Hanzawaia ammophila, Anomalinoides capitatus, A. spissiformis, and A. alazanensis (e.g., Van Morkhoven et al, 1986;Holbourn and Henderson, 2002;Barbieri et al, 2003). Bolivinoides crenulata on March 31, 2011 gsabulletin.gsapubs.org Downloaded from Geological Society of America Bulletin, May/June 2011 latu sensu, the most common and continuously present taxon at Alano, has a wide bathymetric distribution (e.g., Sztrákos, 2005;Nomura and Takata, 2005;Ortiz and Thomas, 2006;Molina et al, 2006a;Alegret et al, 2008). Nuttallides truempyi is present, up to 83.6 m level, and the Bulimina impendens-trinitatensis group is present up to the top of the section.…”

Section: Benthic Foraminifera and Paleodepth At Alanomentioning

confidence: 99%

Integrated biomagnetostratigraphy of the Alano section (NE Italy): A proposal for defining the middle-late Eocene boundary

Agnini

Fornaciari

Giusberti

et al. 2011

Geological Society of America Bulletin

106

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for defining the middle-late Eocene boundary Integrated biomagnetostratigraphy of the Alano section (NE Italy): A proposal Email alerting services articles cite this article to receive free e-mail alerts when new www.gsapubs.org/cgi/alerts click Subscribe America Bulletin to subscribe to Geological Society of www.gsapubs.org/subscriptions/ click Permission request to contact GSA http://www.geosociety.org/pubs/copyrt.htm#gsa click official positions of the Society.citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect presentation of diverse opinions and positions by scientists worldwide, regardless of their race, includes a reference to the article's full citation. GSA provides this and other forums for the the abstracts only of their articles on their own or their organization's Web site providing the posting to further education and science. This file may not be posted to any Web site, but authors may post works and to make unlimited copies of items in GSA's journals for noncommercial use in classrooms requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in subsequent their employment. Individual scientists are hereby granted permission, without fees or further

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“…Most common and/or diagnostic taxa were identified at specific level, although some taxa that displayed a high degree of variability or variable preservation were only identified at generic or higher level. Benthic foraminiferal taxa were identified mainly following the taxonomy outlined by Tjalsma and Lohmann (1983), Van Morkhoven et al (1986), Bolli et al (1994), Alegret and Thomas (2001), Galeotti et al (2004), Sztrakós (2005) and Kaminski and Gradstein (2005). A taxonomic list is given in the Appendix.…”

Section: Benthic Foraminiferamentioning

confidence: 99%

Perturbation at the sea floor during the Paleocene–Eocene Thermal Maximum: Evidence from benthic foraminifera at Contessa Road, Italy

Giusberti

Coccioni

Sprovieri

et al. 2009

Marine Micropaleontology

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Les foraminifères du Paléocène et de l'Éocène basal du sillon nord-pyrénéen (Aquitaine, France)

Cited by 14 publications

References 19 publications

An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response

An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response

Integrated biomagnetostratigraphy of the Alano section (NE Italy): A proposal for defining the middle-late Eocene boundary

Perturbation at the sea floor during the Paleocene–Eocene Thermal Maximum: Evidence from benthic foraminifera at Contessa Road, Italy

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