Influence of décollement friction on anisotropy of magnetic susceptibility in a fold-and-thrust belt model

Abstract Anisotropy of magnetic susceptibility can provide insights into strain distribution in models simulating fold-and-thrust belts. Models with layers sand and magnetite mixture shortened above adjacent decollements high low friction, are used to study the effect decollement friction on fabric. Above high-friction decollement, an imbricate stack produced a ‘tectonic’ fabric foliation parallel thrusts. In contrast, low-friction deformation propagated farther foreland, intensity is gradual from foreland hinterland by defining transition zone between. this zone, lineation rotated front, whereas principal axes do not show preferred orientation due different mechanisms between “thrust-affected” “penetrative-strain affected” area. both types, developed tighter clustering depth. Along boundary two decollements, deflection formed where rotation surface markers reflect structures decollements. Through quantifying fabric, reemphasises clear link magnitude