Abstract: A cleaning composition and method for the removal of contaminants, such as, oil and grease from a surface, particularly concrete and asphalt. The composition includes an absorptive material, charcoal, and a pH modifying agent which is applied and removed in a dry form.
Sedimentary rocks form when particles of sediment are deposited by water or wind, and then (in most cases) hardened or consolidated through time. Shale, sandstone, and limestone are types of sedimentary rocks that often contain fossils.ven though a relatively small proportion of plants and animals that live are preserved as fossils, because so many animals live and die, and because sedimentary rock is very common, finding fossiliferous (fossil-bearing) rocks is not very difficult.
Now let's look at the long answer. There are quite a few fossil classification systems in use today, but my favorite is the one used by Peter Larson and Kristin Donnan in their book, Bones Rock! They group them into two categories: Type I-the remains of the dead animal or plant or the imprint left from the remains.