The definition of SEMSZ by AcronymAndSlang.com Hogback. Shear zones - especially in the shield - are the locus of large amounts of mineralization, eg Hemlo Gold deposit. Observations made during this study indicate that forcible intrusion is unlikely and the mylonites are a result of late synkinematic or post emplacement deformation. click for more detailed Chinese translation, definition, pronunciation and example sentences. How to use shear in a sentence. The SEMSZ meaning is Southern Edgar Marginal Shear Zone. shear zone A region, narrow compared to its length, within which rocks have undergone intense deformation. fault zone(shear zone) in Chinese : 断层带…. Shear definition, to cut (something). Wind shear is observed both near the ground and in jet streams, where it may be associated with clear-air turbulence. Find. a) Shear band in highly porous sandstone (thin section of core from the Njord Field, offshore central Norway). 1b), and ductile. Strain is considerably higher in shear zones with respect to the surrounding rocks, which may appear weakly deformed or non-deformed at all. Table of Contents: Page ABSTRACT..... iii. Brittle shear zones (faults), marked by a surface of rupture, are a common feature of higher crustal levels. A definition of the concept of shear zones opens the article, followed by the shear zones classification into three types, namely brittle (e.g., Fig. Focal mechanisms calculated for the mainshock suggest the earthquake accomodated mostly strike-slip motion on either a left-lateral NE-SW or right-lateral NW-SE oriented fault, according to multiple seismic agencies. Two shear zones at micro-and mapscale. Vertical wind shear that causes turbulence is closely ECSZ is defined as Eastern California Shear Zone somewhat frequently. Fenelon Gold System, Tabasco/Cayenne Zone Definition Drilling . A shear zone is a tabular to sheetlike, planar or curviplanar zone composed of rocks that are more highly strained than rocks adjacent to the zone. click for more detailed Chinese translation, definition, pronunciation and example sentences. shear-zone: A belt of rock crushed and metamorphosed by compression. Hinges form perpendicular to the Z-axis (vertical axis) in the x-y plane, but can be subject to rotation in this plane by changing shear regimes. Examples of how to use “shear zone” in a sentence from the Cambridge Dictionary Labs Transpression is a three-dimensional (3D) kinematic model often used to describe the flow of material at the plate tectonic scale (e.g., Sanderson and Marchini, 1984). Ref: Zern. Printer friendly. Define Shear zone. Learn more. Shear zones are one type of strain localization structures [], which are widely developed in various structural environments.As weak zones in regions, shear zones are always concentrated for intense magma activities, fluid actions and metamorphism, hence provide favorable transport channels and precipitation spaces for ore-forming elements, e.g., Au, Ag, Cu, Pb, Zn, W, Sn and Mo [2,3,4,5,6,7]. Source for information on shear zone: A Dictionary of Earth Sciences dictionary. Shear zones often occur at the edges of tectonic blocks, forming discontinuities that mark distinct terranes. Shear zones defined by en echelon folds can be either semibrittle or ductile, depending of the conditions under which they form. Definition and classification. Definition of shear zone. shear definition: 1. to cut the wool off a sheep: 2. to cut the hair on a person's head close to the skin…. click for more detailed Chinese translation, definition, pronunciation and example sentences. Mean vorticity (W m) is a common measure of vorticity used in the structural geology community and it varies from zero (100% pure shear) to one (100% simple shear; e.g., Xypolias, 2010). Shear zones may form zones of much more intense foliation, deformation, and folding. A shear zone is the ductile, deep equivalent of a fault zone. The hypothetical shear zone is oriented roughly NE-SW, meaning that any faults present in the zone should have roughly the same orientation. Synonym of: sheeted zone, sheeted-zone deposit Ref: AGI ii. 2a). A very narrow zone of abrupt velocity change is known as a shear line. Menu Search. 1a), brittle-ductile (e.g., Fig. A tabular zone of rock that has been crushed and brecciated by many parallel fractures due to shear strain. The Undefined Acronym / Slang SEMSZ means... AcronymsAndSlang. shear zone landslide in Chinese : 破碎带滑坡…. The standard type of folding in deformation zones undergoing transpression is the average fold system. See more. Find. All Free. 2 Plate Boundary-San Andreas Fault Fault Fence Fault zone in Quartzites-Brooks Range Small Normal Faults Small Thrust Fault – Moss Beach, Ca Types of fault Oblique slip . Shear zone definition is - 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. 1, Fig. Shear definition is - to cut off the hair from. GRSZ stands for George River Shear Zone (geology). means a zone in which rocks have been deformed by lateral movement along parallel planes ECSZ stands for Eastern California Shear Zone. Originally it was thought that this occurred through brittle grinding (the word mylonite refers to milling of flour). Definition drilling to a 50-60 metre nominal spacing continues to outline the high metal factor core of the Tabasco-Cayenne shear system, which forms part of the larger shear corridor and has thus far been drilled over a strike length of 800 metres to a vertical depth of 1,000 metres. radial shear zone in Chinese : 辐射状剪力区…. Continental-scale shear zones play an important role in accommodating block extrusion and rotation as shown by deformation on the Ailaoshan-Red River shear zone (ASRRSZ) in the SE Tibetan Plateau. Wind shear, rapid change in wind velocity or direction. The SEMSZ acronym/abbreviation definition. Such an area is often mineralized by ore-forming solutions. Shear zones are generally wider than faults and may accommodate displacements over a range of scales from some centimeters to tens of kilometers. Click here to see list of references, authorities, sources and geographical terms as used in this glossary. Abbreviation to define. The geometry and displacement boundary conditions of these zones are established. Menu Search. Folds tend to form sigmoidal patterns in rocks of a low metamorphic grade within heterogeneous shear zones. Shear zones involve volumes of rock deformed by shearing stress under brittle-ductile or ductile conditions, typically in subduction zones at depths down to 10-20 km. Hop on to get the meaning of SEMSZ acronym / slang / Abbreviation. New search features Acronym Blog Free tools "AcronymFinder.com. With Reverso you can find the English translation, definition or synonym for shear zone and thousands of other words. an active shear zone, (2) post-emplacement ductile deformation, and (3) mylonitization during and as a consequence of forcible pluton emplacement. , meaning that any faults present in the zone should have roughly the same orientation / slang SEMSZ means AcronymsAndSlang. River shear zone is oriented roughly NE-SW, meaning that any faults present in the zone should roughly! 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