EARTHSC 1100 Lecture Notes - Lecture 20: Stress (Mechanics), Compressive Stress, Kimmeridge
30 Nov 2018
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Folded rocks in wales, united kingdom: north coast of cornwall, united kingdom. Folding is bending more or so fracturing: terms. Stress- force per unit area that is exerted on rocks or other material (lbs/cent sq: tensile (tension)=pulling apart, extension/elongated, compressive=squeezing. Shear- sliding pass one another: moving in different directions. Strain- deformation induced by stress, change in shape or size. Force- influence on a body or system tending to produce a change in movement shape, or other effect. Stress- force per unit acting on a rock or other material: pressure- is a special stress condition that happens when the same push acts on al slides of an object. Stress: compressive stress- forces push material together or squeeze, resulting in shortening, tensile stress- forces pull apart, results in stretching or extension (ie conglomerate sedimentary rock undergoing change) Sheer stress- forces act parallel to stress direction, results in change in shape (ie deck of cards)
