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  1. This GIS dataset contains 138 sinkhole areas enclosing logical groupings off 21,799 digitized cover-collapse, karst sinkhole locations distributed across 23 Illinois counties, and is the companion dataset to the Illinois sinkhole points.

  2. Guide to the Route. Stop Descriptions. Stop 1: Falling Springs, Dupo, Illinois. Stop 2: Sparrow Creek Cave Spring, Carondelet, Illinois. Stop 3: Stemler Cave Woods Nature Preserve, Columbia, Illinois Stop 4: Columbia Saline Spring, Columbia, Illinois. Stop 5: Camp Vandeventer, Waterloo, Illinois.

  3. The sinkhole inventory includes two GIS datasets: Illinois Sinkhole Points (n=21,799) and Illinois Sinkhole Areas (n=138). Other ISGS resources pertaining to karst areas include: Karst Terrains and Carbonate Rocks of Illinois (map)

  4. Over 10,000 sinkholes lie within the greater southwestern Il-linois sinkhole plain (figs. 1 and 3). Sinkholes are diagnostic of karst topography (formed from the dissolution of carbon-ate bedrock) and indicate an underlying karst aquifer system. Sinkholes act as small watersheds, collecting runoff and

  5. Columbia Quadrangle lies within the southwestern Illinois sinkhole plain, which is within the Plateau Section (Leighton et al. 1948). The karst topography that dominates the study area of the soluble nature of the underlying bedrock.

  6. The sinkhole plain, which covers parts of three counties in southwestern Illinois (Fig. 1), contains over 10,000 sinkholes and numerous caves and springs (Panno et al. 1997b). The Renault...

  7. 2 gru 2020 · The Salem Plateau karst area, known informally as the “sinkhole plain,” possesses sinkhole densities up to 90 per km 2, with sinkhole diameters up to 300 m and depths up to 20 m (Panno and Luman 2012a, b). Abundant shorter caves and similarly large cover-collapse sinkholes at lower densities are present in the Shawnee Hills and Lincoln ...

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