Radial tension cracks (a lack thereof) seems to be Nienhuis's 'proof' of a global flood. To quote him:
"What do we conclude from this absence of tension cracks in the folded sedimentary rocks? Since there are no tension cracks, the sedimentary layers were not hard rock when they were folded. These sedimentary layers were still wet and soft when they were folded, as proven by the absence of radial tension cracks in the folded, now hard, sedimentary layers. All of these layers were wet and soft when the folding occurred. Thus, they were all laid down in one giant flood event, and were folded shortly thereafter, before they solidified into rock. Once again the Flood scenario beautifully explains what is observed in geology."

Doug

Doug Weller

Director The Hall of Ma'at
Doug's Skeptical Archaeology site::
[www.ramtops.co.uk]