The Maximum Effective Moment Criterion (MEMC) and related geological structures

Abstract

Abstract:

The Mohr-Coulomb criterion has been widely used to explain the formation of fractures. However, it fails to explain large strain deformation that widely occurs in nature. There is presently a new theory, the MEMC, which is mathematically expressed as Meff=0.5 (σ1-σ3) L·sin 2α·sin α, where σ1-σ3 represents the yield strength of the related rock, L is a unit length and α is the angle between σ1 and deformation bands. This criterion demonstrates that the maximum value appears at angles of ±54.7° to σ1 and ther...

Key words:

maximum effective moment criterion, crenulation cleavage, low-angle normal fault, high-angle reverse fault, crocodile structure, lozenge structure, detachment fold,

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The Maximum Effective Moment Criterion (MEMC) and related geological structures

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