- shear zones
- shear zones plural noun (geology)Bands in metamorphic rocks consisting of crushed and brecciated material and many parallel fractures• • •Main Entry: ↑shear
Useful english dictionary. 2012.
shear zones
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Shear (geology) — Study of geological shear is related to the study of structural geology, rock microstructure or rock texture and fault mechanics. Shear is the response of a rock to deformation usually by compressive stress and forms particular textures. Shear… … Wikipedia
shear zone — noun : a zone of shear structure or of closely spaced approximately parallel faults that often becomes a channel for underground solutions and the seat of ore deposition * * * Geol. a zone of closely spaced, approximately parallel faults or… … Useful english dictionary
Foumban Shear Zone — The Foumban Shear Zone, or Central Cameroon Shear Zone (CCSZ), is a fault zone in Cameroon that has been identified with the Pernambuco fault in northeastern Brazil, which splays from the Trans Brazilian Lineament.[1] It is part of the Central… … Wikipedia
Steel plate shear wall — A steel plate shear wall (SPSW) consists of steel infill plates bounded by a column beam system. Overview When these infill plates occupy each level within a framed bay of a structure, they constitute an SPSW [Kharrazi, M.H.K., 2005, “Rational… … Wikipedia
Wind shear — Wind shear, sometimes referred to as windshear or wind gradient, is a difference in wind speed and direction over a relatively short distance in the atmosphere. Wind shear can be broken down into vertical and horizontal components, with… … Wikipedia
Transpression — shear and a component of shortening, resulting in oblique shear. Transpression typically occurs at a regional scale, such as plate boundaries that have an oblique convergence. More locally, transpression can occur along strike slip fault zones… … Wikipedia
tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening … Universalium
Oblique foliation — Oblique foliation, steady state foliation or oblique fabric is a special type of a tectonically produced foliation or fabric, most commonly in quartz rich layers. The microtectonic structure can be used to determine the shear sense in shear zones … Wikipedia
Fold (geology) — For other uses, see Fold (disambiguation). Very tight folds. Formation near Moruya, New South Wales, Australia … Wikipedia
Pilbara craton — The Pilbara craton (the Pilbara province in northwest Western Australia), along with the Kaapvaal craton (the Kaapvaal province of South Africa) are the only remaining areas of pristine Archaean 3.6 2.7 Ga crust on Earth. Similarities of their… … Wikipedia
