Comportamiento sismogénico de una falla sin sismicidad histórica: la falla de El Camp (noroeste de la Península Ibérica)

• Autores: J.A. Villamarín, Eulàlia Masana Closa, J. Sánchez Cabañero, J. Plaza, Pere Santanach i Prat
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 1, 4, 2000 (Ejemplar dedicado a: V Congreso Geológico de España (Alicante, 10-14 julio 2000)), págs. 365-369
• Idioma: español
• Enlaces
  • Texto Completo Ejemplar
• Resumen

  • A complete paleoseismological analysis of El Camp fault; including a previous detailed geologic and stratigraphic study with dating of the alluvial fans cut by the fault, is presented. El Camp fault is situated in an area o f very low historical seismicity with only an l=VI-VII maximum historic earthquake. Yet, evidence for up to three paleoearthquakes were found in five analyzed trenches. Detailed near fault and general geomorphological analysis, used to select suitable sites for trenching, showed two segments along the fault, the northern being inactive since 125 kyr, while the southern ruptured the current topographic surface after 125 kyr Along this active segment the slip rate is 0.02 mm/yr, the recurrence period is between 25 and 50 kyr, the elapsed time is around 3000 yr and the estimated maximum earthquake of M 6.7.