WASHINGTON, April 22 (TNSLrpt) -- The U.S. Geological Survey issued 'A Three-Dimensional Geologic Framework Model of the Northern Great Plains Region of Montana, North Dakota, South Dakota, and Wyoming, USA,' Scientific Investigations Report 20265127, authored by Leland R. Spangler. Funded by the National Cooperative Geologic Mapping Program, the model spans 381,000 square kilometers across four states. It integrates over 300,000 data points from wells, maps, and geophysics to map 41 s . . .

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