Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp)
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This ArcView shapefile contains a polygon representing the boundary of the Powder River Basin based on a generalized contact of Cretaceous and Tertiary rocks. This...
本ArcView形状文件（ArcView shapefile）包含一个多边形要素，用以表征基于白垩系（Cretaceous）与第三系（Tertiary）岩石广义接触界线划定的粉河盆地（Powder River Basin）边界。此……
