Cyclostratigraphy and high frequency carbon isotope fluctuations in Upper Cretaceous shallow-water carbonate, southern Italy. (Articolo in rivista)

Type
Label
  • Cyclostratigraphy and high frequency carbon isotope fluctuations in Upper Cretaceous shallow-water carbonate, southern Italy. (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Buonocunto F.P,., Spovieri M., Bellanca A., D'Argenio B., Ferreri V., Neri R., Ferruzza G. (2002)
    Cyclostratigraphy and high frequency carbon isotope fluctuations in Upper Cretaceous shallow-water carbonate, southern Italy.
    in Sedimentology (Amst., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Buonocunto F.P,., Spovieri M., Bellanca A., D'Argenio B., Ferreri V., Neri R., Ferruzza G. (literal)
Pagina inizio
  • 1321 (literal)
Pagina fine
  • 1337 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Presentazione orale al International Workshop on: “Multidisciplinary approach to Cyclostratigraphy”- SEPM – May 26-28, 2001, Sorrento, Italy (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 49 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • ISSN 0037-0746 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Detailed sedimentologic and carbon isotope studies on a Upper Cretaceous carbonate platform succession from southern Italy show high-frequency eustatic cycles, resulting from the Earth’s orbital fluctuations and expressed by the depositional and early diagenetic features. Our studies allow to individuate elementary cycles, groups of three to five elementary cycles (bundles) and groups of three or four bundles (superbundles). The elementary cycles suggest a control caused by Earth’s precession; the bundles and superbundles record the short (ca.100 kyr) and long (ca. 400 kyr) eccentricity periodicity, respectively. Also the d13C signal is cyclic in nature and may be considered a reliable proxy for the sedimentary evolution of the analysed sequence. Spectral analysis of the d13C record shows two main peaks corresponding to the short- and long-eccentricity periodicity, whereas the precession signal is not evident in the power spectrum. In addition, lithofacies analysis shows that, in each bundle (and superbundle), higher C isotope values occur in sediments characterized by marine cements, whereas lower values are normally found in more restricted deposits overprinted by early meteoric diagenesis. The d13C record reflects high-frequency climatic oscillations controlling both environmental and early diagenetic changes. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per l’Ambiente Marino Costiero, Istituto di Ricerca CNR, Italy Dipartimento di Chimica e Fisica della Terra ed Applicazioni alle Georisorse e ai Rischi Naturali, Universita` di Palermo, Palermo Dipartimento di Scienze della Terra, Università` Federico II di Napoli, Napoli (literal)
Titolo
  • Cyclostratigraphy and high frequency carbon isotope fluctuations in Upper Cretaceous shallow-water carbonate, southern Italy. (literal)
Abstract
  • A detailed carbon-isotope study has been carried out on a Santonian (Upper Cretaceous) carbonate platform succession which crops out at Monte Sant’Erasmo (southern Italy). Previous cm-scale studies on this succession have shown that high-frequency eustatic changes, due to Earth’s orbital fluctuations, controlled the hierarchical organization of the depositional and early diagenetic features in elementary cycles, bundles (groups of 3-5 elementary cycles) and superbundles (groups of 3-4 bundles). While the elementary cycles, which correspond to single beds, suggest a control due to the Earth’s precession, the bundles and superbundles record the short- (~100 kyr) and long- (~400 kyr) eccentricity periodicity respectively. The ä13C signal of the Monte Sant’Erasmo succession is cyclic in nature and may be considered to be a reliable proxy of the sedimentary evolution (and related sea-level history) of the analyzed sequence. The carbon-isotope cyclicity is recorded at bundle and superbundle level, but it is not evident at the scale of the elementary cycles, at least with the sampling interval used in this study. Spectral analysis of the ä13C record shows two main peaks corresponding to the short- and long- eccentricity periodicity, while the precession signal is not evident in the power spectrum. In addition, lithofacies analysis shows that in each bundle (and superbundle) higher C-isotope values occur in sediments characterized by marine cements, while lower values are normally found in more restricted deposits overprinted by early meteoric diagenesis. Early diagenesis, driven by periodic sea-level fluctuations, developed either in shallow-subtidal (marine diagenesis) or in subaerial-exposed (meteoric overprint) sedimentary environments and directly influenced the carbon-isotope signature. As a consequence, the ä13C record at Monte Sant’Erasmo reflects high-frequency climatic oscillations controlling both environmental and early diagenetic changes. The long-term isotopic record is similar to that of contemporaneous pelagic sections in England and elsewere in Italy. It is concluded that the ä13C signature of shallow-water carbonates, like those of Monte Sant’Erasmo, offers great potential for correlation with coeval sections, including those of the pelagic realm. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it