Map of the Earth's gravity in the Gulf of Mexico (IMAGE)
Caption
A map of the Gulf of Mexico region colored to show minute changes in gravity caused by different rock types -- areas of strongest gravity are in purple, and weakest in blue. Knowing where rock types are clustered can tell geologists about the structure and evolution of the Earth. The map was compiled using published, publicly available data by researchers at The University of Texas at Austin, whose research has helped trace the geology behind the success of the Gulf of Mexico's oil and gas reserves.
Credit
Ian Norton/University of Texas Institute for Geophysics
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