TY - RPRT TI - The Olmsted fault zone, southernmost Illinois: A key to understanding seismic hazard in the northern new Madrid seismic zone AU - C.E. Bexfield AU - J.H. McBride AU - Andre J. M. Pugin AU - W.J. Nelson AU - T.H. Larson AU - S.L. Sargent PY - 2005 DO - 10.1016/j.enggeo.2005.07.003 UR - https://pubs.usgs.gov/publication/70028283 ID - 70028283 ER -