Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp)
收藏U.S. Geological Survey1999-01-01 更新2026-04-23 收录
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资源简介：
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 theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region.
提供机构：
United States Geological Survey
创建时间：
1999-01-01
