In geology, competence refers to the degree of resistance of rocks to deformation or flow. In mining, 'competent rocks' are those in which an unsupported opening can be made. More competent rock weathers slower than less competent rock.
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In geology, competence refers to the degree of resistance of rocks to deformation or flow. In mining, 'competent rocks' are those in which an unsupported opening can be made. More competent rock weathers slower than less competent rock.
In geology, shear is the response of a rock to deformation usually by compressive stress and forms particular textures. Shear can be homogeneous or non-homogeneous, and may be pure shear or simple shear. Study of geological shear is related to the study of structural geology, rock microstructure or rock texture and fault mechanics.
The process of shearing occurs within brittle, brittle-ductile, and ductile rocks. Within purely brittle rocks, compressive stress results in fracturing and simple faulting.