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Cortex Natural surface, or rind, on flintlike <br />• material (Crabtree 1972). <br />Culture History The systematic knowledge of prehistoric <br />and historic peoples in a chronologic <br />sequence. <br />Debitage Residual lithic material resulting from <br />tool manufacture (Crabtree 1972). <br />Diagnostic An artifact, feature, or design that is <br />distinctive to a specific culture, tradition, <br />or time period. <br />Dorsal Outer surface, keeled part of blade or <br />flake (Crabtree 1972). <br />Dry Laid Masonry that has been placed to form <br /> an architectural entity without the <br /> use of morter. <br />Ephemeral Drainage An erosional channel in which water is <br /> seasonally present. <br />Exfoliation The breaking or peeling off of scales, <br /> lamellae, as concentric sheets from <br />• bare rock surfaces by the action of <br /> either physical or chemical forces <br /> (American Geological Institute 1976). <br />Extant Sti11 existing, not extinct, Lost, or <br /> destroyed. <br />Flake Any piece of stone removed from a Large <br /> mass by the application of force, either <br /> by tool manufacture or by use. <br />Interior Flake A flake which has no cortex on the dorsal <br /> surface. <br />Lanceolate Lance or spearlike (Crabtree 1972). <br />Limited Activity An archaeological site whose function <br />was a specific activity or activities as <br />opposed to a habitation site, where a <br />wide range of activities took place. <br />lithic Manufacture The production of stone tools. <br />lithic Material Rock that has been or could be flaked, <br />• used in the production of stone tools. <br />39 <br />