This work presents a detailed 87Sr/86Sr isotope curve for the interval 7.5-9.7 Ma obtained by a high-resolution analysis (sampling spacing of about 40 kyr) of an astronomically calibrated land-based sedimentary sequence exposed in the central Mediterranean area (Gibliscemi section, southern Sicily). The main aim is to verify a synchronous response of the Mediterranean seawater Sr isotope record to the oceanic forcing on the basis of multiple comparisons of the Gibliscemi record with published coeval 87Sr/86Sr curves. A good correlation with the 87Sr/86Sr data from the ODP site 926 (equatorial Atlantic ocean), considered to be the Sr chemostratigraphic reference section for the Late Miocene, and from the Pacific DSDP site 590B was registered. Conversely, the comparison of the Gibliscemi Sr isotope data with 87Sr/86Sr ratios from the coeval segment of the land-based Sardella section (eastern Mediterranean) shows important differences highlighting a local control on the seawater Sr isotope changes in semi-isolated subbasins within the Late Miocene Mediterranean.

Astronomical tuning of the Tortonian 87Sr/86Sr curve in the Mediterranean basin / Sprovieri, Mario; Barbieri, Mario; Bellanca, Adriana; Neri, Rodolfo. - In: TERRA NOVA. - ISSN 0954-4879. - ELETTRONICO. - 15:1(2003), pp. 29-35. [10.1046/j.1365-3121.2003.00446.x]

Astronomical tuning of the Tortonian 87Sr/86Sr curve in the Mediterranean basin

Mario Barbieri;
2003

Abstract

This work presents a detailed 87Sr/86Sr isotope curve for the interval 7.5-9.7 Ma obtained by a high-resolution analysis (sampling spacing of about 40 kyr) of an astronomically calibrated land-based sedimentary sequence exposed in the central Mediterranean area (Gibliscemi section, southern Sicily). The main aim is to verify a synchronous response of the Mediterranean seawater Sr isotope record to the oceanic forcing on the basis of multiple comparisons of the Gibliscemi record with published coeval 87Sr/86Sr curves. A good correlation with the 87Sr/86Sr data from the ODP site 926 (equatorial Atlantic ocean), considered to be the Sr chemostratigraphic reference section for the Late Miocene, and from the Pacific DSDP site 590B was registered. Conversely, the comparison of the Gibliscemi Sr isotope data with 87Sr/86Sr ratios from the coeval segment of the land-based Sardella section (eastern Mediterranean) shows important differences highlighting a local control on the seawater Sr isotope changes in semi-isolated subbasins within the Late Miocene Mediterranean.
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Astronomical tuning of the Tortonian 87Sr/86Sr curve in the Mediterranean basin / Sprovieri, Mario; Barbieri, Mario; Bellanca, Adriana; Neri, Rodolfo. - In: TERRA NOVA. - ISSN 0954-4879. - ELETTRONICO. - 15:1(2003), pp. 29-35. [10.1046/j.1365-3121.2003.00446.x]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/489598
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 13
social impact