Five minutes on Google. That would be all it would take for your average creationist to not embarrass himself. I suppose it's too much to ask, though.
I think the problem is, DM did spend 5 minute on the Web and ended up at the wrong site.
I have an advantage not available on the web when it comes to local geology. My wife has worked with the provincial Geologists for the last 29 years and brings home piles of documents and even takes ol' hubby on day trips to various sites. (Not to mention a number of university geology classes 20 years ago)