Paleomagnetic study of Sicily: consequences for the deformation of Italian and African margins over the last 100 million years

Details Paleomagnetic study of Sicily: consequences for the deformation of Italian and African margins over the last 100 million years Paleomagnetic study of Sicily: consequences for the deformation of Italian and African margins over the last 100 million years

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..67..377b&link_type=abstract

Earth and Planetary Science Letters, Volume 67, Issue 3, p. 377-390.

Computer Science

22

Scientific paper

Paleomagnetic analysis of Cenozoic sediments from the Iblean platform (12 sites, 100 samples) has provided four new poles. These data are combined with those available from volcanic series to yield a new apparent polar wander path for ``stable'' Sicily since the Upper Cretaceous. This curve, when compared to a revised curve for Africa (using a selection of available data points), demonstrates a 15° rotation of Sicily with respect to Africa during the Plio-Pleistocene. This rotation accounts for the extensional tectonic regime that prevails in the Pelagian Sea and which is evidenced by ``en relais'' rifts (Malta, Pantelleria, Linosa), associated with alkaline volcanism of Pliocene and Quaternary age. Paleomagnetic directions from various areas of the Italian Peninsula also indicate anticlockwise rotations with diverse amplitudes. The chronology of these rotations is consistent with a deformation of the western Italian margin during progressive suturation from north to south of the Corsican-Sardinian block since the end of the Oligocene.

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