25th November 2019

sciencing
15

What is a deformation in geology?

Deformation is caused by stress, the scientific term for force applied to a certain area. Stresses on rocks can stem from various sources, such as changes in temperature or moisture, shifts in the Earth's plates, sediment buildup or even gravity.

Similarly, what are the two ways rocks permanently deform?

Generally, rocks respond to stress in one of two ways: they break, or they bend. When a rock breaks, it is called brittle deformation. Any material that breaks into pieces exhibits brittle behavior. When rocks bend or flow, like clay, it is called ductile deformation.

What is stress on a rock?

Stress is the force applied to an object. Stresses can be confining, compression, tension, or shear. Rocks under stress may show strain or deformation. Deformation can be elastic or plastic, or the rock may fracture. Rocks respond to stress differently under different conditions.

How are rocks deformed on Earth's crust?

Deformation of Rocks. Rocks become deformed when the Earth's crust is compressed or stretched. The forces needed to do this act over millions of years – deformation is a very slow process!
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