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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
What are shear zone?
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Sajan sarthak Best Answer
Shear zone is a deformation zone in which strain is clearly higher than in the wall rock, and whose margins are defined by a change in strain, typically seen by rotation of preexisting markers or formation of a new fabric.( we call them shear sense indicators) It only includes ductile behaviour of rocks where as faults are structural features of brittle shear zone there are several examples in indian tectonics PCSZ ( Palghar-cauvery shear zone) MBSASZ (Moyar-Bhavani-Salem-Attur shear zone) MBSZ (Moyar-Bhavani shear zone)
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Saurabh 1![best-answer]()
Shear zone is a structural zone that was deformed or acted by the seismic and tectonic activites and have undergone colossal deformation . Shear zones are sometimes vicinity of active tectonics and it is prohibited to build tunnel or any excavation across that region. Shear zone consists of various rock types depending on the matrix and clast content.Mylonite, Ultramylonite, Cataclasite , Gouge are the characteristic of shear zones.