brittle rock

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• Brittle star — Temporal range: 488.2–0 Ma …   Wikipedia

• Rock (confectionery) — Rock is a type of stick shaped boiled sugar confectionery most usually flavoured with peppermint. It is commonly sold at tourist (usually seaside) resorts in the UK (like Brighton or Blackpool), in Ireland in seaside towns such as Bray and in… …   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

• Brittle-ductile transition zone — [ continental crust and changes in dominant deformation mechanisms and fault rocks in a conceptual vertical fault zone. ] The brittle ductile transition zone is the strongest part of the Earth s crust. For quartz and feldspar rich rocks in… …   Wikipedia

• Rock burst — In geology, a rock burst is a spontaneous, violent fracture of rock that can occur in deep mines. The opening of a mine shaft relieves neighboring rocks of tremendous pressure, which can literally cause the rock to explode as it attempts to re… …   Wikipedia

• rock burst — noun : a violent expulsion of rock from the walls of a mine opening caused by heavy pressure on brittle rocks in deep mines where mining has deprived the rock of support on one side compare bump * * * rock burst, a sudden, violent bursting of… …   Useful english dictionary

• rock grouse — Sand Sand, n. [AS. sand; akin to D. zand, G. sand, OHG. sant, Icel. sandr, Dan. & Sw. sand, Gr. ?.] 1. Fine particles of stone, esp. of siliceous stone, but not reduced to dust; comminuted stone in the form of loose grains, which are not coherent …   The Collaborative International Dictionary of English

• rock pigeon — Sand Sand, n. [AS. sand; akin to D. zand, G. sand, OHG. sant, Icel. sandr, Dan. & Sw. sand, Gr. ?.] 1. Fine particles of stone, esp. of siliceous stone, but not reduced to dust; comminuted stone in the form of loose grains, which are not coherent …   The Collaborative International Dictionary of English

• brittle deformation —    The sudden failure of a rock with complete loss of cohesion across a plane …   Lexicon of Cave and Karst Terminology

• brittle — I (Roget s IV) modif. Syn. fragile, crisp, inelastic, breakable; see crumbly . See Synonym Study at fragile . II (Roget s 3 Superthesaurus) a. fragile, crisp, delicate, breakable, frail, crumbly. ANT.: solid, rock hard, unbreakable III (Roget s… …   English dictionary for students