Before the arrival of Europeans the blades of adzes were made of stone. Why do you think people would adopt this new style of adze blades? Adzes tools come in many shapes and sizes (see Figure 1-4), ...

More information: Akira Iwase et al, Experiments with replicas of Early Upper Paleolithic edge-ground stone axes and adzes provide criteria for identifying tool functions, Journal of ...

However, securely dated Pleistocene edge-ground stone axes/adzes have now been identified from Marine Isotope Stage 3 sites in two distant regions: Australia and Japan. These early ground tools ...