One of the things that disproves YEC Flood "geology" is meandering
canyons. Meanders, as most of you surely know, are formed by rivers: they have a tendency to twist and turn. Mainstream geology explains the Grand Canyon as a river which had meandered which had the land which it was on uplifted forming canyons. These canyons have ancient meanders frozen in place. If a Flood quickly formed Grand Canyon and other canyons, they would not meander.
A simple look at the map shows that the Grand Canyon and other canyons formed by the Colorado and its tributaries will show that they do indeed meander. Given that YECs claim that all of this was formed via the Noachian Deluge, an explanation from the YECs of just how these meadering canyons formed is in order.
Indeed the meadering gets quite spectacular at places.
For example, the Goosenecks on the San Juan River which is a tributary of the Colorado has an incredible series of closely packed meanders in a canyon over 1000 feet high.
See an eye-popping larger image
Another one is Horseshoe Bend on the Colorado River a bit upstream from the Grand Canyon National Park:
Source
So YECs, what is the explanation? Any "explanation" for the Grand Canyon must also be able to explain these.