Articles | Volume 20
Sci. Dril., 20, 13–19, 2015
Sci. Dril., 20, 13–19, 2015

Science report 17 Dec 2015

Science report | 17 Dec 2015

A key continental archive for the last 2 Ma of climatic history of the central Mediterranean region: A pilot drilling in the Fucino Basin, central Italy

B. Giaccio1, E. Regattieri1, G. Zanchetta2, B. Wagner3, P. Galli1,4, G. Mannella2, E. Niespolo5, E. Peronace1, P. R. Renne5,6, S. Nomade7, G. P. Cavinato1, P. Messina1, A. Sposato1, C. Boschi8, F. Florindo9, F. Marra9, and L. Sadori10 B. Giaccio et al.
  • 1Istituto di Geologia Ambientale e Geoingegneria, CNR, Rome, Italy
  • 2Dipartimento di Scienze della Terra, UniPI, Pisa, Italy
  • 3Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
  • 4Dipartimento di Protezione Civile Nazionale, Rome, Italy
  • 5Department of Earth and Planetary Science, University of California, Berkeley, USA
  • 6Berkeley Geochronology Center, Berkeley, USA
  • 7Laboratoire des Sciences du Climat et de l'Environnement (CEA-CNRS-UVSQ), Gif-Sur-Yvette, France
  • 8Istituto di Geoscienze e Georisorse, CNR, Pisa, Italy
  • 9Istituto Nazionale di Geofisica Vulcanologia, Rome, Italy
  • 10Dipartimento di Biologia Ambientale, University of Rome "La Sapienza", Rome, Italy

Abstract. An 82 m long sedimentary succession was retrieved from the Fucino Basin, the largest intermountain tectonic depression of the central Apennines. The basin hosts a succession of fine-grained lacustrine sediments (ca. 900 m-thick) possibly continuously spanning the last 2 Ma. A preliminary tephrostratigraphy study allows us to ascribe the drilled 82 m long record to the last 180 ka. Multi-proxy geochemical analyses (XRF scanning, total organic/inorganic carbon, nitrogen and sulfur, oxygen isotopes) reveal noticeable variations, which are interpreted as paleohydrological and paleoenvironmental expressions related to classical glacial–interglacial cycles from the marine isotope stage (MIS) 6 to present day. In light of the preliminary results, the Fucino sedimentary succession is likely to provide a long, continuous, sensitive, and independently dated paleoclimatic archive of the central Mediterranean area.

Short summary
As a pilot study for a possible depth-drilling project, an 82m long sedimentary succession was retrieved from the Fucino Basin, central Apennines, which hosts ca. 900m of lacustrine sediments. The acquired paleoclimatic record, from the retrieved core, spans the last 180ka and reveals noticeable variations related to the last two glacial-interglacial cycles. In light of these results, the Fucino sediments are likely to provide one of the longest continuous record for the last 2Ma.