Keywords: Borden-Sharon unconformity.jpg Unconformity at the hammer between underlying Mississippian Borden Formation and overlying Pennsylvanian Sharon Conglomerate on US Rt 35 near Jackson Ohio 1998 1998 Own <br />Transferred from http //en wikipedia org en wikipedia Jstuby at http //en wikipedia org en wikipedia cc-zero Jstuby at http //en wikipedia org en wikipedia Original upload log page en wikipedia Borden-Sharon_unconformity jpg 2010-12-21 03 47 Jstuby 399×597 138542 bytes <nowiki>Unconformity at the hammer between underlying Mississippian Borden Formation and overlying Pennsylvanian Sharon Conglomerate on US Rt 35 near Jackson Ohio 1998 </nowiki> 1998 in Ohio Jackson County Ohio Unconformities in the United States Stratigraphy |