The Great Unconformity in the Grand Canyon
This massive erosional plane would be precisely the kind of feature you would expect to see if there really was a worldwide flood as described in Genesis and elsewhere in the Bible. One of the places we often explore on our Grand Canyon river trips is a little side canyon found at river mile 120 called Blacktail Canyon. Blacktail is a very narrow slot canyon carved predominantly into the golden-brown latticed ledges of the Tapeats Sandstone. For many folks, the time spent in Blacktail is the highlight of their Grand