Although far away from active plate boundaries, continental interiors are seismically active and include significant seismic zones (Sykes, 1978). The best known of these zones in the central United States is the New Madrid seismic zone (NMSZ; Nuttli, 1973a, 1983). The NMSZ has been a particular focus of attention for seismic studies in the central United States due to the three large Mw>7.0 earthquakes in 1811–1812 (e.g., Nuttli, 1973a; Dunn et al., 2010; Page and Hough, 2014). However, there is evidence of significant potential for large earthquakes outside the NMSZ,...

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