Eruptions of the last 2200 years at Vulcano and Vulcanello (Aeolian Islands, Italy) dated by high-accuracy archeomagnetism

摘要: The recent eruptive history of the Vulcano island (Southern Italy) was investigated through high-accuracy “large sample” archeomagnetic method (Tanguy, J.C., Le Goff, M., Principe, C., Arrighi, S., Chillemi, V., Paiotti, A., La Delfa, Patane, G., 2003. Archeomagnetic dating Mediterranean volcanics last 2100 years: validity and limits. Earth Planet. Sci. Lett. 211, 111–124; Tanguy, 2005. Comment on “Historical measurements Earth's magnetic field compared with remanence directions from lava flows in Italy over four centuries” by R. Lanza, A. Meloni, E. Tema. Phys. Interiors 152, 116–120; 2004. large sample applied to Neapolitan volcanoes Aeolian Islands. PhD Thesis. University Pisa, Italy, pp. 1–186). Age determination is based upon directional geomagnetic variation reconstructed historically dated lavas Southern archeological sites Western Europe (Gallet, Y., Genevey, 2002. Three millennia as revealed artefacts. 131, 81–89) relocated Sicily. Results present paper were obtained 12 including 185 samples weighing 0.5–1 kg, distributed Vulcanello platform pyroclastic cones, Fossa cone. It shown that built nearly continuous activity between AD 1000 1250, which more than a millennium younger believed until now questionable interpretation imprecise historical accounts. Most cone, whose ages rather hypothetical or known uncertainty, have erupted within same period. However, “Pietre Cotte” obsidian flow confirmed date 1720 ± 30, agreement data (1739).