orogenic belt (mobile belt) A linear or arcuate zone, on a regional scale, which has undergone compressional tectonics. The histories of many orogenic belts have been interpreted using platetectonics models involving the subduction of oceanic lithosphere (e.g. the Andean orogenic belt), the collision of major continental masses (e.g. the Himalayan orogenic belt), or the accretion of terranes (e.g. the Cordillera of the western USA and Canada). Orogenic belts were formerly expected to show the phases of the orogenic cycle, but this has now been replaced by a search for identifiable stages of the Wilson cycle to see if the belt can be interpreted using a plate-tectonics model.
More From encyclopedia.com
Wilson Cycle , Wilson cycle The hypothesis, named after Tuzo Wilson who proposed it, that an ocean basin has a lifespan with several stages: from opening, through d… Alum , alum (ăl´əm), any one of a series of isomorphous double salts that are hydrated sulfates of a univalent cation (e.g., potassium, sodium, ammonium, ce… Nutrient Cycle , nutrient cycle(mineral cycle) A biogeochemical cycle, in which inorganic nutrients move through the soil, living organisms, air, and water, or throug… Encyclopedia.com. , cyclo- • comb. form 1. circular: cyclorama. 2. relating to a cycle or cycling: cyclocross. 3. cyclic: cycloparaffin. cyclo- comb. form of Gr. kūklos… Hepatomegaly , hepatomegaly Enlargement of the liver as a result of congestion (e.g. in heart failure), inflammation or fatty infiltration (as in kwashiorkor). hepa… Hygroscopic Nucleus , hygroscopic nucleus Microscopic particle (e.g. of sulphur dioxide, salt, dust, or smoke) in the free air, on which water vapour may condense to form…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like