Carbon isotope stratigraphy: a tool for basin to carbonate platform correlation |
| |
| Authors: | V Ferreri H Weissert B D'Argenio F P Buonocunto |
| |
| Institution: | Dipartimento di Scienze della Terra, Universitd'Federico II, Largo S. Marcellino 10, I –80138 Naples, Italy;Geologisches Institut, ETH-Z. CH-8092 Zürich, Switzerland;Istituto di Ricerca Geomare Sud, CNR, Via Vespucci 9, I –80142 Naples, Italy |
| |
| Abstract: | The Early Cretaceous carbonate carbon isotope stratigraphy established in pelagic limestones is marked by several pronounced excursions towards positive δ13C values. We investigated a biostratigraphically and palaeomagnetically calibrated Aptian section to see whether C isotope stratigraphy could be recognized in shallow-water carbonates. The chosen carbonate platform sections are located in southern Italy and have been dated by biostratigraphy. Bulk samples, chosen from the Barremian-Albian part of the sequence, were analysed for their O and C isotope compositions. The C isotope curve established shows two major positive excursions which can be correlated with the synchronous and globally recognized Aptian C isotope events. The data provide evidence that C isotope stratigraphy can be used as a powerful correlation tool between pelagic and shallow-water limestone sequences. |
| |
| Keywords: | |
|
|
