#Catastrophic Geo &Rivers
Rivers for the most part all run in faults and cracks in the earth's crust.
This is most apparent in canyons like the Snake River canyon, Grand Canyon and
Santa Elena in Big Bend Texas.
These canyons in many places have vertical walls that run a consistent width
Remove the rubble filling the bottom of the canyon and you can mentally push
the canyon back together.
The Grand Canyon has huge islands of crust standing within the canyon.
The river would not have cut down alternately each side of these stranding
them in the canyon.
I say the cracks were formed by the catastrophe and the rivers all follow
them.