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Technology and Terminology of Knapped Stone - IRIT

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7 8 9<br />

11 1 2 13 1 4 1 5<br />

Fig. 65 — Delineation <strong>of</strong> the edge created by a series <strong>of</strong> removals. 1 : rectilinear. 2 : convex. 3 : concave.<br />

4 : notched. 5 : denticulated. 6 : serrated. 7 ; cran. 8 : shoulder. 9 : nose. 10 : tongue. 11, 12 :<br />

tang. 13 : long narrow tang. 14 : irregular. 15 : regular.<br />

DIACRITIC DIAGRAM . A full scale outline<br />

drawing figuring outlines <strong>and</strong> arrises, but<br />

leaving out direction lines; it shows the<br />

boundaries, the debitage axes (<strong>of</strong>ten surmised),<br />

<strong>and</strong> the chronology <strong>of</strong> removals<br />

(fig. 54) (see p. 126).<br />

DIHEDRAL. A general morphological term.<br />

See under buri n <strong>and</strong> but t for the particular<br />

meaning taken on when applied to these<br />

words.<br />

DIRECT. 1. An adjective <strong>of</strong> positio n applying<br />

to retouch removals originating<br />

from the lower face. It therefore only concerns<br />

debitag e product s (flakes, blades,<br />

bladelets) (fig. 75 : 1).<br />

2. Direct percussion : see percussion .<br />

DIRECTION LINE . Refers to a pen <strong>and</strong> ink<br />

drawing technique : each <strong>of</strong> the parallel<br />

downstroke <strong>and</strong> upstroke lines used for<br />

140<br />

expressing volume <strong>and</strong> rendering the directions<br />

<strong>of</strong> debitage <strong>and</strong> retouch.<br />

DISCONTINUOUS. An adjective qualifying<br />

the distributio n <strong>of</strong> removals along an edge<br />

(see continuous ) (fig. 66 : 1).<br />

1 2 3<br />

Fig. 66 — Distribution <strong>of</strong> removals along an<br />

edge. 1 : discontinuous. 2 : total on<br />

the distal edge. 3 : partial on the right<br />

edge.

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