March 7, 2016
Like many geologists, I like to decorate with rocks. This week’s “Monday Geology Picture” features some rocks on a shelf in my living room. There’s many more rocks on this shelf — this picture just shows a few of them. What do you spot in this picture? Among other things, I see an orthoceras fossil, some volcanic pumice, a botryoidal carbonate rock, a rock with a vein of gabbro, sandstone concretions, and some chert.