Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks cover 75% of the Earth's surface. Four basic processes are involved in the formation ...

Shale is a sedimentary rock made up of tiny grains of silica, clay and other minerals. Many types of rock have few physical or chemical differences in a particular chunk of that rock.

Alternatively, sedimentary rocks take shape when the tiny ... these fossils become increasingly distorted until they’re destroyed). Shale, first and foremost, forms when the super-fine fragments of ...

Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of sediment build up on top of one another, they create a physical timeline. The oldest layers, ...

Richard Edan / Getty Images Oil shale is a type of sedimentary rock formation that can be used to produce oil and gas. Oil shale can produce oil and gas because of the presence of kerogen ...

Shale, also called mudstone, is a sedimentary rock formed from fine particles such as mud, silt, and clay. Shale is formed by finely bedded material that splits into thin layers. The pieces commonly ...