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aureole |
Also found in: Dictionary/thesaurus, Hutchinson | 0.02 sec. |
aureole, in physicsaureole (ôr`ēōl'), in physics, luminous circle seen when the sun or other bright light is observed through a diffuse medium, i.e., smoke, thin cloud, fog, haze, or mist. It sometimes occurs as a series of concentric circles. The aureole results from the dispersion of light by particles of dust or water. Because of the refraction of the light waves, it exhibits color in varying intensities. In geology, an aureole zone is where rocks show the effect of contacting intruding, hot igneous rock, also called contact metamorphism metamorphism, in geology, process of change in the structure, texture, or composition of rocks caused by agents of heat, deforming pressure, shearing stress, hot, chemically active fluids, or a combination of these, acting while the rock being changed remains..... Click the link for more information. . aureole, in artaureole, in art: see nimbus nimbus (nĭm`bəs), in art, the luminous disk or circle or other indication of light around the head of a sacred personage...... Click the link for more information. . aureole, aureola 1. (esp in paintings of Christian saints and the deity) a border of light or radiance enveloping the head or sometimes the whole of a figure represented as holy 2. another name for corona aureole [′ȯr·ē‚ōl] (geology) A ring-shaped contact zone surrounding an igneous intrusion. Also known as contact aureole; contact zone; exomorphic zone; metamorphic aureole; metamorphic zone; thermal aureole. (meteorology) A poorly developed corona in the atmosphere characterized by a bluish-white disk immediately around the luminous celestial body, as around the sun or moon in the fog. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Furthermore, many of the methods and the rationale discussed in this article can also be applied in surface geochemical exploration, which is based on leaking hydrocarbons creating distinctive diagenetic aureoles that are direct indicators for hydrocarbon pools at depth (e. Proximal intrusive bodies, as indicated by the presence of aeromagnetic anomalies with coincident, regionally developed aureoles of quartz-pyrite hornfels, marble and skarn; Metamorphic aureoles around the granitic rocks are estimated to extend on the order of 1 km from the granitic rocks (Gordey and Anderson, 1993). |
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