Clastic — Clas tic, a. [Gr. ? br?, fr. ? to break.] 1. Pertaining to what may be taken apart; as, clastic anatomy (of models). [1913 Webster] 2. (Min.) Fragmental; made up of brok? fragments; as, sandstone is a clastic rock. [1913 Webster] … The Collaborative International Dictionary of English
clastic — 1875, from Gk. klastos broken in pieces, from klan, klaein to break, from PIE *kla , variant of root *kel to strike … Etymology dictionary
clastic — [klas′tik] adj. [< Gr klastos, broken < klan, to break (< IE * kla , var. of base * kel , to strike > HOLT, Gr klēma, L calamitas, calamity) + IC] 1. designating an anatomical model with removable sections to show internal structure 2 … English World dictionary
clastic — adjective Etymology: International Scientific Vocabulary Date: 1877 made up of fragments of preexisting rocks < a clastic sediment > • clastic noun … New Collegiate Dictionary
clastic — /ˈklæstɪk / (say klastik) adjective 1. Biology breaking up into fragments or separate portions; dividing into parts; causing or undergoing disruption or dissolution: clastic action; the clastic pole of an ovum. 2. relating to an anatomical model… …
clastic — adj. Geol. composed of broken pieces of older rocks. Phrases and idioms: clastic rocks conglomerates, sandstones, etc. Etymology: F clastique f. Gk klastos broken in pieces … Useful english dictionary
Clastic dike — Vertical clastic dike, filled with coarse basaltic sand, cuts lighter colored horizontal beds composed of finer grained material. Quarter for scale. A clastic dike is a seam of sedimentary material that fills a crack in and cuts across… … Wikipedia
Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts … Wikipedia
Clastic wedge — In geology, clastic wedge usually refers to a thick assemblage of sediments often lens shaped in profile eroded and deposited landward of a mountain chain; they begin at the mountain front, thicken considerably landwards of it to a peak depth,… … Wikipedia
clastic rock — noun (geology) a rock composed of broken pieces of older rocks • Derivationally related forms: ↑clastic • Topics: ↑geology • Hypernyms: ↑rock, ↑stone • … Useful english dictionary
