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| Satow, C.; Tomlinson, E. L.; Grant, K. M.; Albert, P. G.; Smith, V. C.; Manning, C. J.; Ottolini, L.; Wulf, S.; Rohling, E. J.; Lowe, J. J.; Blockley, S. P. E.; Menzies, M. A.. |
| Tephra layers preserved in marine sediments can contribute to the reconstruction of volcanic histories and potentially act as stratigraphic isochrons to link together environmental records. Recent developments in the detection of volcanic ash (tephra) at levels where none is macroscopically visible (so-called ‘crypto-tephra’) have greatly enhanced the potential of tephrostratigraphy for synchronising environmental and archaeological records by expanding the areas over which tephras are found. In this paper, crypto-tephra extraction techniques allow the recovery of 8 non-visible tephra layers to add to the 9 visible layers in a marine sediment core (LC21) from the SE Aegean Sea to form the longest, single core record of volcanic activity in the Aegean Sea.... |
| Tipo: Text |
Palavras-chave: Tephra; Trace elements; Santorini; Campanian Ignimbrite; Pantelleria; Kos; Yali; Aegean sea; Mediterranean. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00294/40498/39433.pdf |
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| Lowe, John J.; Blockley, Simon; Trincardi, Fabio; Asioli, Alessandra; Cattaneo, Antonio; Matthews, I. P.; Pollard, M.; Wulf, S.. |
| The first part of this paper presents a review of the problems that constrain the reliability of radiocarbon-based age models with particular focus on those used to underpin marine records. The reasons why radiocarbon data-sets need to be much more comprehensive than has been the norm hitherto, and why age models should be based on calibrated data only, are outlined. The complexity of the probability structure of calibrated radiocarbon data and the advantages of a Bayesian statistical approach for constructing calibrated age models are illustrated. The second part of the paper tests the potential for reducing the uncertainties that constrain radiocarbon-based age models using tephrostratigraphy. Fine (distal) ash layers of Holocene age preserved in... |
| Tipo: Text |
Palavras-chave: Radiocarbon-based age models; Tephrochronology; Volcanic event stratigraphy; Lago Monticchio record; Bayesian method; WDS geochemical data; Discriminant function analysis (DFA). |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00039/15025/12429.pdf |
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