High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy. (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy. (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.palaeo.2004.03.012 (literal)

Alternative label

• Giovanna Scopelliti (a); Adriana Bellanca (a); Rodolfo Coccioni (b); Valeria Luciani (c); Rodolfo Neri (a), Francois Baudin (d); Marco Chiari (e); Marta Marcucci(e) (2004)
  High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy.
  in Palaeogeography, palaeoclimatology, palaeoecology; Academic Press Elsevier, Amsterdam (Paesi Bassi)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Giovanna Scopelliti (a); Adriana Bellanca (a); Rodolfo Coccioni (b); Valeria Luciani (c); Rodolfo Neri (a), Francois Baudin (d); Marco Chiari (e); Marta Marcucci(e) (literal)

Pagina inizio

• 293 (literal)

Pagina fine

• 317 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.journals.elsevier.com/palaeogeography-palaeoclimatology-palaeoecology/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 208 (literal)

Rivista

• Palaeogeography, palaeoclimatology, palaeoecology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• n. 3-4 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 25 (literal)

Note

• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• a) Dipartimento di Chimica e Fisica della Terra ed Applicazioni alle Georisorse e ai Rischi Naturali, Universita` degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. b) Istituto di Geologia e Centro di Geobiologia dell'Universita` , Campus Scientifico, Localita` Crocicchia, 61029 Urbino, Italy. c) Dipartimento di Scienze della Terra dell'Universita` , Corso Ercole I d'Este 32, 44100 Ferrara, Italy. d) Departement de Geologie Sedimentaire et CNRS-FR 32, 4 place Jussieu, 75252 Paris Cedex 05, France. e) Dipartimento di Scienze della Terra dell'Universita` , Via G. La Pira 4, 50121 Florence, Italy. (literal)

Titolo

• High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy. (literal)

Abstract

• High-resolution micropalaeontological and chemostratigraphic records for the upper Cenomanian portion of the Calabianca–Guidaloca composite section (NW Sicily) provide new insight into the palaeoclimatic and palaeoceanographic evolution of the Tethys Ocean. The Bonarelli Level equivalent was identified on the basis of lithology and well constrained by calcareous plankton biostratigraphy and radiolarian assemblages, as well as by the delta13C curve showing a marked positive excursion (up to 4.7‰). The Bonarelli Level equivalent deposition is characterized by highly eutrophic conditions as testified by radiolarian proliferation. Black shale samples from the Calabianca–Guidaloca composite section contain very high TOC (up to 26%) and moderate to high amounts of CaCO3 (on average 20%). Among the planktonic foraminifera, hedbergellids and globigerinelloids tolerated the environmental stress induced by the Oceanic Anoxic Event 2 (OAE2). The occurrence of some benthic foraminifera testifies to dysoxic rather than completely anoxic conditions at the sea floor during the deposition of some portions of the Bonarelli Level equivalent. Based on micropalaeontological results and geochemical proxies (delta13C, D*, Rb, Ti, V, Ni, Ba, Si, Cr), the Bonarelli Level equivalent is interpreted as a high-productivity event driven by increasingly warm and humid climatic conditions promoting an accelerated hydrological cycle. We propose that periodically increased riverine influxes, triggered by enhanced humidity, resulted in a sluggish circulation mode and consequent anoxic/euxinic conditions favouring the preservation of organic matter at the sea-floor. Spectral analyses performed on selected geochemical signals reveal within the main high productivity event a strong orbital–climatic forcing represented by a long-term eccentricity-steered humidity cyclicity that amplifies a short-term precession-controlled productivity fluctuation. (literal)

Editore

• Academic Press Elsevier (Editore)

Prodotto di

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Geodinamica ed evoluzione della litosfera continentale (TA.P04.015.003) (Modulo)

Autore CNR

• MARCO CHIARI (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy." (Insieme di parole chiave)

Incoming links:

Autore CNR di

• MARCO CHIARI (Unità di personale interno)
• http://www.cnr.it/ontology/cnr/individuo/unitaDiPersonaleEsterno/ID12063

Prodotto

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Geodinamica ed evoluzione della litosfera continentale (TA.P04.015.003) (Modulo)

Editore di

• Academic Press Elsevier (Editore)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Palaeogeography, palaeoclimatology, palaeoecology (Rivista)

Insieme di parole chiave di

• Parole chiave di "High-resolution geochemical and biotic records of the Tethyan ‘Bonarelli Level’ (OAE2, Latest Cenomanian) from the Calabianca-Guidaloca composite section, nortwestern Sicily, Italy." (Insieme di parole chiave)