Kansas Geological Survey, Current Research in Earth Sciences, Bulletin 250, part 1
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Figure 12--Detail of COCORP seismic section across the Midcontinent Rift System, showing western east-dipping thrust fault. Vertical displacement appears to be about 1 mi (1.6 km), and horizontal displacement is at least 6 mi (9.6 km).

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Kansas Geological Survey, Current Research
Web version Sept. 15, 2004
http://www.kgs.ku.edu/Current/2004/Gerhard/fig12.html
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