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- Number of terms: 6786
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An elongated block of the earth's crust uplifted relative to surrounding rocks along bounding faults.
Industry:Natural environment
The difference between the initial position of a reference point and a later position. In geology it is the permanent offset of a reference point across a fault.
Industry:Natural environment
A volcanic center, 100 to 200 km across and persistent for at least a few tens of millions of years, that is thought to be the surface expression of a rising plume of hot mantle material.
Industry:Natural environment
Behaviour in which rocks, at a critical stress, do not rupture but instead become permanently deformed by flowing.
Industry:Natural environment
The point within the earth where earthquake rupture begins; the focus of an earthquake.
Industry:Natural environment
The length of time the ground motion at a site shows certain characteristics in an earthquake.
Industry:Natural environment
A trembling and shaking of the earth’s surface; a vibration or trembling of the ground caused by movement of the subsurface.
Industry:Natural environment
A subjective numerical index describing the severity of ground shaking in an earthquake in terms of the effect on objects and humans.
A version of the Modified Mercalli intensity scale is on page __.
Industry:Natural environment
Any physical phenomenon associated with an earthquake that may produce adverse effects on human activities.
Industry:Natural environment
An earthquake that occurs on the boundary between two tectonic plates.
Industry:Natural environment
