RFG 2018 Conference

GeoWord of the Day

The GeoWord of the Day is a free service of the American Geosciences Institute. All of the terms and definitions are from the Glossary of Geology, 5th Edition Revised.

Subscribe via EMail to the GeoWord of the Day.


heat flux [oceanog] . The transfer of heat through a unit area of the sea surface, usually in watts per square meter. The flux is due to evaporation, solar radiation, infrared radiation, and direct conduction.

hydrotungstite (hy-dro-tung'-stite). A dark green monoclinic mineral: WO2(OH)2•H2O .

stromoconolith (stro-mo-con'-o-lith). A layered igneous intrusion that is either conical or funnel-shaped (Tomkeieff, 1961). Obsolete.

asselbornite (as'-sel-born-ite). A brown or yellow cubic mineral: (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3H2O .

atelestite (at-e-les'-tite). A yellow or yellowish-green monoclinic mineral: Bi2O(AsO4)(OH) . Isomorphous with smrkovecite and hechtsbergite.

oolitic (o-o-lit'-ic). Pertaining to an oolite, or to a rock or mineral made up of ooliths; e.g. an "oolitic ironstone", in which iron oxide or iron carbonate has replaced the calcium carbonate of an oolitic limestone. Also spelled: oölitic.

transitional-water wave . A wave that is moving from deep water to shallow water, i.e. is transitional between a deep-water wave and a shallow-water wave; its wavelength is more than twice but less than 25 times the depth of the water, and the wave orbitals are beginning to be influenced by the bottom. Syn: intermediate wave.

Raman lines . Shifted lines in the Raman spectrum. They are typically at longer wavelengths than the exciting radiation (Stokes lines), but shorter wavelengths (anti-Stokes lines) may occasionally appear.

Mima mound (Mi'-ma [my'-ma]). A term used in the NW U.S. for one of numerous low, circular or oval domes composed of loose, unstratified, gravelly silt and soil material, built upon glacial outwash on a hog-wallow landscape; the basal diameter varies from 3 m to >30 m, and the height from 30 cm to about 2 m. Named after the Mima Prairie in western Washington State. Cf: pimple mound.

coordinate system . A reference system for defining points in space or on a particular surface by means of distances and/or angles with relation to designated axes, planes, or surfaces.

Pages

Subscribe to GeoWord of the Day