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Earthquake
Of or pertaining to the natural phenomenon when tectonic plates slide or move causing the Earth's surface also move which causes devastating damage to cities and towns.
Industry: Natural environment
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Earthquake
Debris flow
Natural environment; Earthquake
A moving mass of rock fragments, soil, and mud, more than half ofthe particles being larger than sand size.
Graben
Natural environment; Earthquake
A block of the earth's crust, usually elongated, that has subsided relative to adjacent rocks along bounding faults.
Gravity anomaly
Natural environment; Earthquake
A feature in the gravity field of the earth caused by the distribution of mass in the earth.
Basement
Natural environment; Earthquake
Igneous and metamorphic rocks underlying the sedimentary rocks of a region and extending to the base of the crust.
First motion
Natural environment; Earthquake
The direction of ground motion as the P-wave arrives at a seismometer. Used to compute fault-plane solutions.
Bedrock
Natural environment; Earthquake
Solid rock that is exposed or underlies softer rock, sediments, or soil.
Floating earthquake
Natural environment; Earthquake
Earthquakes in regions of moderate to high seismicity that cannot be correlated with known geologic structures and thus are assumed to be likely to occur at any location in the region.
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