clastic rock

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• 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 rock — noun (geology) a rock composed of broken pieces of older rocks • Derivationally related forms: ↑clastic • Topics: ↑geology • Hypernyms: ↑rock, ↑stone • …   Useful english dictionary

• clastic rock; detrital rock —    A sedimentary rock derived from fragmentated other preexisting rock or organic structures [16] …   Lexicon of Cave and Karst Terminology

• 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 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

• rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

• Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

• Rock cycle — rocks do not remain in equilibrium and are forced to change as they encounter new environments. The rock cycle is an illustration that explains how the 3 rock types are related to each other and how processes change from one type to another over… …   Wikipedia

• 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… …  

• Rock (geology) — In geology, rock is a naturally occurring aggregate of minerals and/or mineraloids.The Earth s outer solid layer, the ‘lithosphere’, is made of rock. In general rocks are of three types, namely, igneous, sedimentary, and metamorphic. The… …   Wikipedia

• clastic carbonate rock —    Carbonate rock that is made up of carbonate grains (e.g., shells, shell fragments, oolites) …   Lexicon of Cave and Karst Terminology