thin-out

thin-out

[′thin′au̇t]
(geology)
Gradual thinning of a stratum, vein, or other body of rock until the upper and lower surfaces meet and the rock disappears.
References in periodicals archive ?
Improper sizes of regrind particles, improper blending of the regrind with virgin, and contaminants in the regrind (paper, cardboard, wood, metal) can change the parison die swell or sag and cause blow-outs, thin-outs, or hot spots.