Polygonal faults in chalk: Insights from extensive exposures of the Khoman Formation, Western Desert, Egypt: REPLY Tewksbury, B. J. ; Hogan, J. P. ; Kattenhorn, S. A. ; Mehrtens, C. J. ; Tarabees, E. A. Abstract Publication: Geology Pub Date: September 2014 DOI: 10.1130/G36059Y.1 Bibcode: 2014Geo....42E.345T