A fault zone is a shear zone formed in the brittle regime. shear zone; (b) Secondary shear zone at the chip-tool interface; (c) Continuous chip with built-up edge (d) Continuous chip with large primary shear zone (e) Segmented or nonhomogeneous chip and (f) Discontinuous chip. The shear zone, 1,where the primary plastic or shear deformation takes place The chip-tool interface, 2, where secondary plastic deformation due to friction between the heated chip and tool takes place. Fig.1: Sources of heat in metal cutting 21.3) unlike that shown in … SHEAR ZONE. The transition is gradual and known as the brittle - ... PowerPoint Presentation Author: Nelson Eby … The rock immediately above and below a nonvertical fault or shear zone is the - hanging-wall. Faults, fault zones, shear zones Terminology Hanging wall Foot wall Fault Zone in Granitic Gneiss Fault scarp after an earthquake- Nevada. 9 Continuous chips may develop a secondary shear zone (Fig. … Fault Zone Shear Zone Fault zone geometry depends on mechanical stratigraphy (Richard et al., 2013) Fault Wide fault zone Shear zone Vertical Fault Discontinuity Role of Mechanical Stratigraphy Richard et al. and the . A shear zone is a zone of strong deformation (with a high strain rate) surrounded by rocks with a lower state of finite strain.It is characterised by a length to width ratio of more than 5:1. “Inyoni shear zone” Inyoni shear zone 3 Ep + 7 Qz + 9 Amp1 = 7 Gt + (10 Ab + 1 Or) + 4 Cpx + 3 Amp2 23 Gt + 16 Cpx + 6 An = 17 Ep + 9 Amp3 + 5 Qz “Inyoni shear zone” Inyoni shear zone 3 Ep + 7 Qz + 9 Amp1 = 7 Gt + (10 Ab + 1 Or) + 4 Cpx + 3 Amp2 23 Gt + 16 Cpx + 6 An = 17 Ep + 9 Amp3 + 5 Qz Percival, 1994 … Allochthonous / par-autochthonous / autochthonous . Simplified model of the connection between faults, which normally form in the upper crust, and classic ductile shear zones. Or even a zone with a mixture of brittle and ductile Scribd is the world's largest social reading and publishing site. NOTE: Teach from slide. Can also have a purely ductile shear zone. of the fault, respectively. A shear zone is a tabular zone in which strain is notably higher than in the surrounding rock. 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. 493-551) Shear zone: zone of highly strained rocks. Adverse Winds Wind shear – The rate of change of wind velocity (direction and/or speed) per unit distance; conventionally expressed as vertical or horizontal wind shear. 2013. • Stage c, post-peak structure: New shears, P shears are formed at an average angle -10˚. • Stage a, peak structure: The Riedel shears appear just before peak shear strength. Homogeneous straining in the future shear zone. Shear zones form a continuum of geological structures, ranging from brittle shear zones (or faults) via brittle–ductile shear zones (or semibrittle shear zones), ductile–brittle to ductile shear … Please read (D&R, pp. • Stage b, post-peak structure: The Riedel shears extended into a more horizontal direction. involves the displacement and tectonic emplacement of hanging-wall rocks forming . Shear zones and shear sense indicators. Shear PPT.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. 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