News from the Geoblogosphere
New from Snet:
, a new tool to create lithological/sedimentological logs online..
Blog post recommendation
Petroglyph Photo Gallery
A petroglyph is an image that is carved into a rock. This “carving” can produce a visible indentation in the rock or it can simply be the scratching away of a weathered surface to reveal unweathered material of a different color below.