Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4734029 | Journal of Structural Geology | 2007 | 8 Pages |
This paper investigates structures in the layered Critical Zone of the Bushveld Complex in South Africa that have detrimentally affected mining operations. The common structures are layer-parallel faults with reverse dip-slip and ramp faults with curved slip planes and prominent striations. Geometric variations include duplex ramps contained within floor and roof layer-parallel faults and linking ramps connecting separate layer-parallel faults hidden in the footwall and hangingwall. The orientations, geometries, displacements and shear senses of the layer-parallel faults and ramp faults are interpreted to be flexural-slip structures formed during bending of the originally horizontal Bushveld Complex into a basin-fold geometry during crustal loading.