Figure 1. Internal analysis of tool markings on formerly soft wall deposit in Nung-kol Cave, South Australia. Where striation patterns are preserved, five apparently different tools have been identified, numbered 1-5. All marks were executed from top to bottom, with limestone clasts. The cross-sections of the tips (perpendicular to direction of movement) on two of the tools were determined, and are shown below (tool 1 and tool 2).
Figure 2. Principles of the relationship of total production of an archaeological phenomenon s-alpha to its surviving instances s-beta as a function of angle phi. These principles are the basis of taphonomic logic.
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