State and Basin-wide coal crop/extent, thickness, depth, elevation, quality, availability for mining, and mined area GIS layers and metadata. The maps/digital files used for these studies were compiled from data obtained from a variety of public and private sources and have varying degrees of completeness and accuracy. The maps are designed for regional assessment and have a resolution of 1:500,000. Features or details of features smaller than about one-half mile across may not be accurately portrayed or may be omitted altogether. Much of this information is available online at https://isgs.illinois.edu/research/coal/maps.
Summary
State and Basin-wide coal crop/extent, thickness, depth, elevation, quality, availability for mining, and mined area GIS layers and metadata. The maps/digital files used for these studies were compiled from data obtained from a variety of public and private sources and have varying degrees of completeness and accuracy. The maps are designed for regional assessment and have a resolution of 1:500,000. Features or details of features smaller than about one-half mile across may not be accurately portrayed or may be omitted altogether. Much of this information is available online at https://isgs.illinois.edu/research/coal/maps.
