Titlebook: Structural Geology; A.R. Bhattacharya Book 2022 Springer Nature Switzerland AG 2022 Structural geology.Rock deformation.Geometry and genes

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Assault

Estimation of Strainof by how much the rock is deformed. Over the last about half century, this vagueness has been mitigated to a great extent by estimation of strain, i.e. the amount of deformation, from deformed rocks. This is done by identifying some objects in a deformed rock, called ., whose original shape or size

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Rheology and flow under different physical conditions is called .. Rocks change their deformation behaviour under different physical conditions. Rheology thus deals with how the physical factors control the nature of deformation of a material in respect of flow. The rate at which a rock deforms is called ..

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Brain-Waves

Foldsd due to compressive stresses acting parallel to, or across, the originally flat surfaces of rock layers. Folds may occur in a single layer or in multilayers. They are developed on all scales ranging from microscopic to kilometric and occur in all types of rocks. They commonly occur in strongly defo

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Faultsan elongated zone of high shear stress along which two blocks of adjacent rocks have been offset. It is thus a discontinuity or anisotropy due to which the rock loses its cohesion. Being a plane, a fault can be described in geometric terms such as dip and strike. The orientation of stresses acting u

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Extensional Regime and Normal Faults contrast to compression that causes shortening). Our knowledge on extensional tectonism increased in the 1980s when several normal faults of the Basin and Range Province of the western USA were reinterpreted as low-angle extensional structures, called . that have accommodated tens of kilometres of

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Joints and Fracturese called . along which there has been little or no transverse displacement of rock. A related structure is ., which is a general term for any kind of break or discontinuity in rock. Yet another related structure is . in which wall-parallel displacement is discernible. Joints may be open or filled wi