DATE2018-05-21 01:52:42
IDABSTRACT20180521015242-0229
CONTACTcarla.taricco@unito.it
PRESENTATIONORAL
INVITED0
IDSESSION2
TITLEΔ18O PROFILE MEASURED IN THE CENTRAL MEDITERRANEAN CORE CT85-5 AND THE LAST DEGLACIATION
AUTHORSC Taricco (1,2), S Mancuso (2), I Hajdas (3), S Rubinetti (1,2)
AFFILIATIONS
  1. Dipartimento di Fisica, Università di Torino, Torino, Italy
  2. Osservatorio Astrofisico di Torino (OATo, INAF), Pino Torinese, Italy
  3. Laboratory of Ion Beam Physics, ETH, Zuerich, Switzerland
ABSTRACTWe measured δ18O in the upper 450 cm of the deep-sea core CT85-5 taken from the Tyrrhenian sea. The age model of this core is based on 15 Accelerator Mass Spectrometry (AMS)-14C measurements performed at ETH in Zürich (Hajdas et al., 2011). Two dates corresponding to the historically dated tephra layers of Pollena (472 AD) and Pompeii (79 AD) eruptions (Cini Castagnoli et al., 1992) were also used. The δ18O record at our site reflects several patterns typical of the last deglaciation and Late Holocene period, with some features which probably reflect local changes in temperature and salinity. We discuss the δ18O record in comparison with other marine records from the same area over the last 40 kyr. The good agreement in both general trend and timing of the major oscillations shows the consistency of the different core chronologies and a similar progression towards maximum values during the early Holocene around 9 cal kr BP.Hajdas, I., Taricco, C., Bonani, G., Beer, J., Bernasconi, S. M., & Wacker, L. Anomalous radiocarbon ages found in Campanian Ignimbrite deposit of the Mediterranean deep-sea core CT85-5, Radiocarbon, 53(4), 575, 2011.Cini Castagnoli, G., Bonino, G., Provenzale, A., Serio, M. & Callegari, E., The CaCO3 profiles of deep and shallow Mediterranean sea cores as indicators of past solar-terrestrial relationships, Il Nuovo Cimento C, 15, 547-563, 1992.
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STATE1