Pedra Furad

Large rock shelter in northeastern Brazil, 1973 Series of radiocarbon dates to more than 48,000 BP Great later artifacts found at site (in upper layers)- rich holocene deposits with hearths, rock art, exotic chert (lower) pleistocene layers have quartzite cobble tools checked out by paleo-police> cobble tools LOOKED like artifacts but are not at base of cliff> quartzite at top- its fall explains how they were broken up and appeared to look like artifacts (geofacts) -issues with use of radio carbon years versus calendar dates- class with use calendar da