3 October 2011

Lichens on Morrison sandstone

Posted by Callan Bentley

Picking up from Saturday’s post about ripple marks and cross-bedding in Morrison sandstone from north of Shell, Wyoming, let’s scoot away from the purely geological content for a moment, so that we can appreciate some beautiful orange/yellow radial lichens growing on one rippled sandstone slab:

You can make that one bigger by clicking on it, or you can look at these close-up lichen portraits below:

I love the delicate fading from orange to yellow, and their delicate dendritic branching pattern, and their micro-topography so well-highlighted by the low-angle light in these photos.