The south-central Illinois earthquake of November 9, 1968: Macroseismic studies

@article{Gordon1970TheSI,
  title={The south-central Illinois earthquake of November 9, 1968: Macroseismic studies},
  author={David W. Gordon and Theron J. Bennett and Robert B. Herrmann and Albert M. Rogers},
  journal={Bulletin of the Seismological Society of America},
  year={1970}
}
The November 9, 1968 earthquake in south-central Illinois occurred in the New Madrid zone, a seismic zone associated with northeast-trending geological structure. Landforms in the epicentral area consist of nearly flat, glacial lake plains surrounding low, loess-covered hills. An extensive post office canvass and a field inspection of the epicentral area indicate that the strongest shaking (MM VII) took place in the Wabash and Ohio Valleys and adjacent lowlands of south-central Illinois… 

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