ESR dating of Mousterian levels at El Castillo Cave, Cantabria, Spain

Sediments filling the cave of El Castillo, in Cantabrian Spain, contain Acheulian, Mousterian, and Upper Palaeolithic industries. Bischoffet al. (1992) obtained a U-series isochron date of 89±10ka on a travertine layer separating Acheulian layers from the lowest Mousterian bed; layer 23. We have obtained electron spin resonance (ESR) ages on tooth enamel from the immediately overlying Mousterian-bearing layers 22 and 21, yielding an average age …