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Mr. Biando's Lab

Mr. Biando's Lab - Deformation

DefinitionTerm
The process by which the shape of a rock changes because of stress. Deformation
A type of stress that occures when a rock is squeezed, such as when two tectonic plates collide (convergence). Compression
A form of stress that occurs when rock is stretched by two tectonic plates being pulled apart (divergence). Tension
The bending of rock layers due to stress. Folding
A downward, trough-like fold in a layer of rock. Syncline
An upward arching fold in a layer of rock. Anticline
When layers of rock are folded so that two horizontal sections appear to be bent in the middle. Monocline
A break in a body of rock along which one block slides relative to another. Fault
When rocks are pulled apart because of tension. Normal Fault
When rocks are pushed together by compression. Reverse Fault
The top layer of rock appearing at a fault line. Footwall
When rocks are move horizontally by opposing forces (transforming). Strike-Slip Fault
Moutains that are formed by colliding (convergent) tectonic plates squeezed together and push rock upward. Folded Mountains
Mountains that form when tectonic plates pull away (divergent) from each other, stretching and breaking apart, dropping blocks of crust forming faults. Fault-Block Mountains
Mountains that are formed by volcanic means by hot spots located near subduction zones. Volcanic Mountains
The rising of regions of the Earth's crust to higher elevations. Uplift
The sinking of the Earth's crust to lower elevations. Subsidence
One way areas rise without deformation. Rebound
A set of deep cracks that form between two tectonic plates that are pulling away from each other. Rift Zone
Created by: dbiando
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