1 The piece of stone which a stone‐knapper works so as to produce flakes, blades, or core tools; also known as a blank.
2 [Ge] An intact solid cylinder‐shaped sample of sediment, stone, or wood collected with a coring device or hollow drill. Deep‐sea cores and ice cores provide important records of climatic change and sediment accumulation. Cores taken from archaeological sites provide a quick guide to the main stratigraphic subdivisions. Cores from peat bogs can be sampled for pollen analysis. Cores taken from substantial timbers are used in dendrochronology.