Open AccessGeocronologia e Paleomagnetismo del Vulcano Roccamonfina
Author(s) -
M. Cortili,
N. Roberti,
Roberto Scandone
Publication year - 2010
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-4895
Subject(s) - paleomagnetism , volcanism , geology , caldera , volcano , outcrop , seismology , geochemistry , geophysics , tectonics
A detailed K-Ar and paleomagnetic study was made
on the oldest outcropping lavas of the Roccamonfina volcano.
The very first episodes of volcanism were concentrated at around
1 M.Y., whereas most of the activity occurred between 0.4 and 0.5 M.Y.
After the formation of a caldera a second cycle of volcanism started at
0.25 M.Y. The paleomagnetic measurements indicate an episode of normal
polarity at 1.10 + 0.05 M.Yr. The occurrence of this episode was suggested
by Watkins (14) in 1968. There is no evidence of other magnetic events
on younger rocks