nonclastic

nonclastic

[¦nän′kla‚stik]
(geology)
Of the texture of a sediment or sedimentary rock, formed chemically or organically and showing no evidence of a derivation from preexisting rock or mechanical deposition. Also known as nonmechanical.
References in periodicals archive ?
Dvorkin, "Predicting elasticity in nonclastic rocks with a differential effective medium model," Geophysics, vol.
The Salt Range comprises rocks ranging in age from Pre-Cambrian to Recent, with sedimentary rocks (clastic and nonclastic) mainly of Tertiary age in the Soan-Sakesar Valley.