Rockin’ Pop-Up: Biogenic Geology
Virtual CA, United StatesRockin' Pop-Up: Biogenic Geology When we think of geology and rocks, living things rarely jump to mind unless we’re talking about fossils. And when we think of fossils, we usually think of mineralized bones and shells or tell-tale impressions within sedimentary rocks. Some rocks, however, are made up entirely of the fossilized remains of once […]