EARTH SCIENCE
STRUCTURAL GEOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Process when the rocks break apart or erode.
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Process of when rocks melt away.
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Process when rocks change shape under pressure.
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Process when
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Detailed explanation-1: -When a rock is subjected to increasing stress it passes through 3 successive stages of deformation. Elastic Deformation–wherein the strain is reversible. Ductile Deformation–wherein the strain is irreversible. Fracture-irreversible strain wherein the material breaks.
Detailed explanation-2: -Pressure has a profound impact on the deformation behavior of rocks. At the conditions present at Earth’s surface, with the exception of ice, rocks deform by brittle fracture. Yet at relatively shallow depth (just a few tens of km) brittle fracture is suppressed and in most circumstances rocks deform by ductile flow.
Detailed explanation-3: -This is called confining stress. Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1). Compression is the most common stress at convergent plate boundaries. Rocks that are pulled apart are under tension.