SPS Growth Puzzle

[Aquattro]

Originally Posted by lastlight

Sorry I can't help being such a noob. But it blows my mind that a sandbed can solidify to the point where you can't break it up! How long did that take to happen? You had creatures sifting while this occurred?

Brett, as best I can tell, it took a few months. I had the usual compliment of critters, but no help. I've read about this kind of thing, but never actually saw it. I couldn't believe how hard the slabs were! Sand actually bonded to the bottom of rocks and I had to chisel it off with a knife.