Earth is composed of many substances which vary widely in density.  These density contrasts cause deviations of the strength of gravity at Earth's surface.  Such changes can be measured with a gravimeter.

This technique can be used to map structural features such as faults and locate ore bodies.

The Near Surface Geophysics Lab at Kutztown University has an Educational Model of the Worden Gravimeter.

  KU students performing on-campus gravimeter lab in the stairway of Boehm (Fall 2010)

GEL 358 - General Geophysics

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