[1] Inst Geol & Minero Espana, Madrid, Spain
[2] Univ Complutense Madrid, Dpt Geodinam, Fac Ciencias Geol, Madrid, Spain
[3] Univ Cantabria, Inst Hidraul Ambiental IH Cantabria, E-39005 Santander, Spain
[4] Univ Barcelona, Dept Geodinam & Geofis, Barcelona, Spain
[5] Univ Lisbon, Dept Geol, Inst D Luiz, Fac Ciencias, P-1699 Lisbon, Portugal
[6] Univ Rey Juan Carlos, Area Geol ESCET, Mostoles, Madrid, Portugal
[7] Univ Autonoma Madrid, Dept Geol & Geoquim, Madrid, Spain
[8] Inst Super Tecn, Lisbon, Portugal