En échelon and orthogonal fault ruptures of the 11 April 2012 great intraplate earthquakes Posted on January 1, 2012June 20, 2017 by Paul Roberson Yue, H., T. Lay, and K.D. Koper (2012). En échelon and orthogonal fault ruptures of the 11 April 2012 great intraplate earthquakes, Nature 490, doi:10.1038/nature11492.