The "large sample method" of archeomagnetic dating was applied to Stromboli. 127 samples (10 sites) yielded paleofield directions with 95% confidence intervals less than 2degrees. Coupled with a reference curve for secular variation in western Europe, these allow accurate dating of volcanic events. A lava flow underlying San Bartolo village gave a minimum age of AD 100 (+/-100); a lava overflow predating the last sector collapse was dated from 1350 (+/-60), suggesting the recent occurrence of highly hazardous events. Lava spatters and a hot avalanche high on the northern flank were emplaced during the XXth century; lava spatters on the lower flanks could date the onset of the still-ongoing phase from AD 550 (+/-50). These results are different from those obtained in a recent study, probably because traditional paleomagnetic sampling cannot yield sufficient precision, considering the characteristics of the archeomagnetic secular variation curve.
Geophys. Res. Lett.ISI Document Delivery No.: 861PITimes Cited: 6Cited Reference Count: 25Cited References:*GLOB VOLC NETW, 2002, B GLOB VOLC NETW, V2712, P20ALEXANDRESCU M, 1996, PHYS EARTH PLANET IN, V98, P321ARRIGHI S, 2004, THESIS U PISA PISABARBERI F, 1993, ACTA VULCANOL, V3, P173BUCUR I, 1994, PHYS EARTH PLANET IN, V87, P95CARRACEDO JC, 1993, J VOLCANOL GEOTH RES, V58, P203GALLET Y, 2002, PHYS EARTH PLANET IN, V131, P81GALLET Y, 2003, EARTH PLANET SC LETT, V214, P237GILLOT PY, 1993, ACTA VULCANOL, V3, P69INCORONATO A, 2002, GEOPHYS J INT, V149, P724LEGOFF M, 1975, THESIS CONS NATL ARTLEGOFF M, 1998, 22 GEN ASS EUR GEOPHLEGOFF M, 2002, PHYS EARTH PLANET IN, V134, P203RITTMANN A, 1931, Z VULKANOL, V14, P47ROLPH TC, 1987, J ARCHAEOL SCI, V14, P215ROSI M, 2000, B VOLCANOL, V62, P294SPERANZA F, 2004, GEOPHYS RES LETT, V31TANGUY JC, 1970, ARCHAEOMETRY, V12, P115TANGUY JC, 1981, B VOLCANOL, V44, P585TANGUY JC, 1985, NATURE, V318, P453TANGUY JC, 1999, CR ACAD SCI II A, V329, P557TANGUY JC, 2003, EARTH PLANET SC LETT, V211, P111THELLIER E, 1966, NUCLEUS, V7THELLIER E, 1981, PHYS EARTH PLANET IN, V24, P89TIBALDI A, 2001, B VOLCANOL, V63, P112L19603