RT Journal Article
T1 Estado actual de esfuerzos en Béticas y Alborán a partir del análisis de “breakouts”
T1 Present-day stress field in the Betics and the Alboran Basin from breakout analysis
A1 Fernández Ibáñez, F.
A1 Soto, Juan I.
A1 Zoback, M. D.
AB Logging data from several onshore and offshore deep wells located at the South-Iberian Margin wereselected to perform breakout analysis. Every data used to determine the orientation of breakouts comefrom magnetically oriented four-arm caliper which is part of the dipmeter logging tool. Most of the wellswere drilled through Plio-Quaternary and late Miocene sediments, in cases reaching the metamorphicbasement. Breakouts zones have been recognized in 6 wells; in depths up to 3000 m. Mean orientationand standard deviation of breakouts at each well have been used to assess the borehole quality followingranking criteria of the World Stress Map (WSM). From the well data set analyzed, three wells are consideredas reliable stress indicators to characterize the present-day stress field throughout the margin (AndalucíaA-1, Andalucía G-1, and Bética 18-1). The rest must be interpreted with caution because of the sparsenumber of breakouts. Stress inversion performed in these wells evidences that maximum horizontal stress(SHmax) tend to parallel coast strike, resulting in a roughly E-W orientation along the northern margin of theAlboran Sea
YR 2006
FD 2006
LK http://hdl.handle.net/10272/8567
UL http://hdl.handle.net/10272/8567
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026