INVESTIGADORES
TOMEZZOLI Renata Nela
congresos y reuniones científicas
Título:
QUANTYFING TECTONIC ROTATIONS FROM PALEOMAGNETIC DATA: A BOOTSTRAP APPROACH
Autor/es:
GALLO, L.C.; SVARC M.; CALVAGNO, J.M.; TOMEZZOLI R.N.; CRISTALLINI ERNESTO OSVALDO; PUIGDOMENECH C.
Lugar:
Rancagua
Reunión:
Congreso; 6° Reunión Bienal de la Asociación Latinoamericana de Paleomagnetismo y Geomagnetismo (LATINMAG); 2019
Institución organizadora:
Asociación Latinoamericana de Paleomagnetismo y Geomagnetismo
Resumen:
Usually, tectonic rotations around vertical axis are calculated with the method proposed by Demarest (1983) under the assumption that the directions follow a Fisher distribution (Fisher, 1953). However, as was already noted, the distribution of paleomagnetic directions are elongated in N-S direction (e.g. Deenen et al., 2011; Tauxe, Kent, 2004). It is therefore inappropriate to use Fisher statistics in directional datasets. From this assumption, we have developed a bootstrap approach for the determination of tectonic rotations in a fully data driven way, where the uncertainties are calculated empirically. A preliminary version of the program implementing the method described here is available from L. Gallo on request.
