Discovery Science: Earth – Sedimentary Rocks
Earth Science: Sedimentary Rocks Sedimentary rocks are the most common type of rock on Earth. All sedimentary rocks are formed in a similar manner: by sedimentation, compaction, or cementation of many smaller particles of mineral, animal, or plant origin. Sedimentary rocks are categorized into three groups: clastic, chemical, and bio- genic. Clastic sediments, such as … Read more