footwall block

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• footwall — noun Geology the block of rock which lies on the underside of an inclined fault or mineral vein …   English new terms dictionary

• earthquake — /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 …   Universalium

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• Fault (geology) — Part of a series on earthquakes Types Foreshock • Aftershock • Blind thrust Doublet • Interplate • …   Wikipedia

• Emily Ann and Maggie Hays nickel mines — The Emily Ann and Maggie Hays nickel deposits are situated approximately 150km west of the town of Norseman, Western Australia, within the Lake Johnston Greenstone Belt [Hill R.E.T, Barnes S.J., Gole M.J., and Dowling S.E., 1990. Physical… …   Wikipedia

• Kambalda type komatiitic nickel ore deposits — Kambalda type nickel ore deposits are a class of magmatic nickel copper ore deposit in which the physical processes of komatiite volcanology serve to enrich, concentrate and deposit nickel bearing sulfide within the lava flow environment of an… …   Wikipedia

• fault — /fawlt/, n. 1. a defect or imperfection; flaw; failing: a fault in the brakes; a fault in one s character. 2. responsibility for failure or a wrongful act: It is my fault that we have not finished. 3. an error or mistake: a fault in addition. 4.… …   Universalium

• Widgiemooltha Komatiite — The Widgiemooltha Komatiite is a formation of komatiite in the Yilgarn Craton of Western Australia. Stratigraphy The stratigraphy of the Widgiemooltha Komatiite is well known to be part of the regional komatiite magmatic event also seen at the… …   Wikipedia

• Thrust fault — in the Qilian Shan, China. The older (left, blue and red) thrust over the younger (right, brown). A thrust fault is a type of fault, or break in the Earth s crust across which there has been relative movement, in which rocks of lower… …   Wikipedia

• Broken Hill Ore Deposit — The Broken Hill Ore Deposit is located underneath Broken Hill in western New South Wales, Australia, and is the namesake for the town. It is arguably the world s richest and largest zinc lead ore deposit. Discovery The Broken Hill ore deposit was …   Wikipedia

• Graben — A graben is a depressed block of land bordered by parallel faults. Graben is German for ditch .A graben is the result of a block of land being downthrown producing a valley with a distinct scarp on each side. Grabens often occur side by side with …   Wikipedia