Dave and Eric - Thanks for the feedback. That's just what I was looking for. These shots came from a really tough morning of trying to bring in the focus of what I was trying to say. It was clearly not completely successful. I've been back to these a couple of times because I have the lingering feeling that I was almost there. Time to let them go and move on.
Paulo - Thanks for the geo-support. As I think I noted in a comment on one of your shots, us geos see the world a bit differently. Damn the composition, it's the rocks that count!