Dating Holocene lavas on Stromboli, Italy using cosmogenic He

Foeken, J., Stuart, F.M. and Francalanci, L. (2009) Dating Holocene lavas on Stromboli, Italy using cosmogenic He. Quaternary Geochronology, 4(6), pp. 517-524. (doi:10.1016/j.quageo.2009.09.001)

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Abstract

In-situ cosmogenic 3He exposure ages of pyroxene phenocrysts from basalts from the Upper Neostromboli formation in southwest Stromboli date its eruption at 7.0 ± 0.3 ka (1σ, n = 3, Ginostra site) and 6.8 ± 0.2 ka (1σ, n = 10, Timpone del Fuoco site) respectively. Correlation of our new data to previous K/Ar and palaeomagnetic ages from the northwestern Neostromboli phase suggests that it erupted within a confined period between roughly 6 and 14 ka. The low uncertainty on the 3Hecos ages as well as on individual exposure ages (4.4–8.7%) demonstrates that 3Hecos exposure dating is a viable tool for dating Holocene basalt lavas. The ages compare favourably to uncertainties obtained for radiocarbon dating of similar rocks.

Item Type:Articles
Additional Information:Advances in Cosmogenic Isotope Research from CRONUS-EU
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Stuart, Professor Finlay and Foeken, Dr Jurgen
Authors: Foeken, J., Stuart, F.M., and Francalanci, L.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Quaternary Geochronology

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