The Doc has wanted to visit and photograph the sandstone here for some time, with no success (one or two failed attempts). So he booked 2 nights at Copcabana this week to visit and take photographs.

Here, the sandstone made up of tessellated pavement and Liesegang rings. They do not fully understand how these rings occur, but they do occur in sedimentary rock with a cross cut pattern. Iron and other minerals must be present creating the patterns. The is a heavy iron layer in this rock, you can see iron oxide or rust layers when the iron is exposed to water and oxygen.

Technically “there is a precipitation process that is thought to be the catalyst for Liesegang ring formation referred to as the Ostwald-Liesegang supersaturation-nucleation-depletion cycle.” OK?

A small selection of the spectacular sandstone.

mghother@internode.on.net

mghother@internode.on.net

mghother@internode.on.net

mghother@internode.on.net

mghother@internode.on.net

Putty Beach also has a nice rock platform with some large waves. This place must be spectacle in heavy surf, as it was great with minimal waves. Enjoy.

mghother@internode.on.net