Control tectónico de la sedimentación lacustre miocena en el área de Tordesillas (Valladolid) en la Cuenca del Duero

• Autores: Jorge Delgado García, Gaspar Alonso Gavilán
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 5, 2003 (Ejemplar dedicado a: V Congreso del Grupo Español del Terciario (Granada, 23-25 de septiembre, 2003)), págs. 53-55
• Idioma: inglés
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• Resumen

  • The miocene sedimentation in the Toro-Tordesillas area (Zamora and Valladolid provinces) was developed by a lacustrine system whose sedimentary evolution was conditioned and controlled by activity of faults and fractures that coincide with the current fluvial net. The tectonic readjustments have generated a subsidence-sedimentation relationship of the lacustrine system whose result is the organization in three tracts of the materials with differentiated sedimentary histories. The faults and fractures define blocks and the characteristics of each tract in the Cuestas Unit is originated by the movement of these blocks. The step among tracts is marked by facies associations that indicate maximum silts level in the lacustrine basin.