Integrated stratigraphic reconstruction for the last 80 kyr in a deep sector of the Sardinia Channel (Western Mediterranean)

• Published in: Deep Sea Research Part II: Topical Studies in Oceanography
• Main Authors: Budillon, F., Lirer, F., Iorio, M., Macrì, P., Sagnotti, L., Vallefuoco, M., Ferraro, L., Garziglia, S., Innangi, S., Sahabi, M., Tonielli, R.
• Other Authors: Budillon, F.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Lirer, F.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Iorio, M.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Macrì, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Sagnotti, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Vallefuoco, M.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Ferraro, L.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Garziglia, S.; Géosciences-Azur, CNRS, BP 48, Fr-06235, Villefranche sur Mer, France, Innangi, S.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Sahabi, M.; Faculté des Sciences, BP 20, 24000 El Jadida, Morocco, Tonielli, R.; Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Istituto per l’ Ambiente Marino Costiero, IAMC, Consiglio Nazionale delle Ricerche, Calata Porta di Massa 80, I-80133 Napoli, Italy, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Géosciences-Azur, CNRS, BP 48, Fr-06235, Villefranche sur Mer, France, Faculté des Sciences, BP 20, 24000 El Jadida, Morocco
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2009
• Subjects: Integrated stratigraphy; Late Neogene marine record; Eco-bio-events; Reflectance 550 nm %; Sardinia Channel; Western Mediterranean; 04. Solid Earth::04.04. Geology::04.04.04. Marine geology; 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating; processes; transport; 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy; 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism; Greenland; Planktonic foraminifera
• Online Access: http://hdl.handle.net/2122/5116; https://doi.org/10.1016/j.dsr2.2008.07.026

A quantitative analysis of planktonic foraminifera, coupled with petrophysical and paleomagnetic measurements and 14C AMS calibrations, was carried out on a deep core recovered in the Sardinia Channel (Western Mediterranean Sea), during the CIESM Sub2 survey, providing an integrated stratigraphic time-framework over the last 80 kyr. Significant changes in the quantitative distribution of planktonic foraminifera allowed the identification of several eco-bioevents useful to accurately mark the boundaries of the eco-biozones widely recognised in the Western Mediterranean records and used for large scale correlations. Namely, 10 eco-biozones were identified based on the relative abundance of selected climate sensitive planktonic foraminiferal species. Sixteen codified eco-bioevents were correlated with the Alboran Sea planktonic foraminiferal data and four climatic global events (Sapropel S1, Younger Dryas, Greenland Isotope Interstadial 1, Greenland Isotope Stadial 2, Heinrich event H1-H6) were recognized. The eco-bioevents together with the 14C AMS calibrations allowed us to define an accurate age model, spanning between 2 and 83 kyr. The reliability of the age model was confirmed by comparing the colour reflectance (550 nm%) data of the studied record with the astronomically tuned record from the Ionian sea (ODP-Site 964). A mean sedimentation rate of about 7 cm/kyr included three turbidite event beds that were chronologically constrained within the relative low stand and lowering sea level phases of the MIS 4 and 3. The deep-sea sedimentary record includes a distinct tephra occurring at the base of the core which dates 78 ka cal. BP. The paleomagnetic data provide a well-defined record of the characteristic remanent magnetization that may be used to reconstruct the geomagnetic paleosecular variation for the Mediterranean back to 83 kyr. Published 725 - 737 2.2. Laboratorio di paleomagnetismo JCR Journal reserved