Sentences with phrase «sharp flakes from»
Archaeologists have long considered the advent of the Levallois method of making stone tools — a strategy for obtaining broad, thin, sharp flakes from a chunk of stone called a core — to be a significant development in human prehistory.
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«More than 2,600 sharp - edged flakes, flake fragments, and cores (cobbles from which flakes have been removed), found in the fine - grained sediments of a dry riverbed in the Afar region of Ethiopia, have been dated to between 2.52 and 2.60 million years ago, pushing back by more than 150,000 years the known date at which humans were making stone tools.»
The sharp spice from the chili flakes and the chopped serrano chili added a nice layer of flavor to the SouthEast - Asian blend of garlic, shallots, and ginger simmering in coconut milk.
Stone artifacts unearthed in the same sediment as the fossil jaw included chunks of rock from which sharp flakes were pounded off and used as cutting tools.