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Drought-Induced Crop Lines
October 8, 2012 | Illinois Geological Survey

“Extreme drought conditions during the summer of 2012 resulted in the formation of crop lines, a rare feature that mimics underlying crevices that make up the karst bedrock aquifer in the Driftless Area, northwestern Illinois. Georeferenced aerial photographs of the lines are being used to map the crevice geometry of the aquifer, reveal the nature of lineaments only seen in LiDAR imagery, and are being used in conjunction with road cut and quarry mapping, to characterize the aquifer in three dimensions.” Description and photo courtesy of Samuel V. Panno.


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