conductivity of rocks
1Typical values of thermal conductivity — ▪ Table Typical values of thermal conductivity (in 0.001 calories per centimetre per second per degree Celsius) material at 20 °C at 200 °C typical rocks 4–10 granite 7.8 6.6 gneiss (perpendicular to banding) 5.9 5.5 (100 °C) (parallel to… …
2hydraulic conductivity — noun A material property (e.g., for rocks or soil) that describes the rate which water can flow through pore spaces or fractures. SI units: m/s. Symbol: K …
3earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake …
4Frederick Vine — Frederick John Vine (born June 17, 1939) is a marine geologist and geophysicist and was a key contributor to the theory of plate tectonics. Early lifeVine was born in London, W4 and educated at Latymer Upper School and St John s College,… …
5rock — 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… …
6Rock — /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… …
7geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
8Porosity — or void fraction is a measure of the void (i.e., empty ) spaces in a material, and is a fraction of the volume of voids over the total volume, between 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… …
9Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
10hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …
