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Examine Aaron Burr's western conspiracy.
Prehistoric Earthquakes
Earthquakes that occurred before recorded history, evidenced through geological formations and studies.
Seismic Recording Stations
Facilities equipped with sensitive instruments used to detect and record earthquakes and other ground vibrations.
Interferogram
The combining of satellite mapping images taken of a place at two different times to compare changes in the land surface, for example, during an earthquake.
Seismograms
Records produced by a seismograph that visually represent the vibrations of the earth, used to analyze and interpret seismic activity.
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