Task 1: Determine the paleostress tensor

Start: July 1996 (month 5)
End: January 1998 (month 23)
Responsible partner: CNRS.TT
Cooperative partners: NVI, IMOR.DG

Francoise Bergerat and Jacques Angelier

The paleostress tensors for many localities in the SISZ have been made, using fault-slip datasets. Preliminary work on Tjörnes fracture zone (TFZ) was carried out last summer, and some paleostress tensors for this zone have already been calculated. This task was in collaboration with Ágúst Gudmundsson.

 

• Detailed analysis of focal mechanisms of earthquakes and recent faulting in the central part of the SISZ (work carried out with Gudmundsson and Rögnvaldsson)
• Seismi-tectonic studies in the whole SISZ (work carried out with Gudmundsson and Rögnvaldsson)
• Stress tensor determination from focal mechanisms: development of new methodology, especially aiming at solving the problem of the choice between the nodal planes