Chalk, limestone, shale, and sandstone are all examples of sedimentary rocks. All these different sedimentary rocks are formed from the broken remains of other rocks that become joined together.

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 ...

The name is misleading. Oil shale, which is a convenient umbrella term for a variety of fine-grained and organic-laden sedimentary rocks, is not really oil at all. While it formed in prehistoric ...

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, ...

Shale is a sedimentary rock made up of tiny grains of silica, clay and other minerals. Many types of rock have few physical ...

Hydraulic fracturing, or fracking, is a technique designed to recover gas and oil from shale, a sedimentary rock found worldwide. The amount of shale gas available in the UK is acknowledged to be ...

Higher incomes are often correlated with healthier pregnancies and babies, but is it really the money that matters? Sedimentary rocks that formed 390 million years ago, surprisingly, help provide the ...

or simply the Marcellus Shale) is a unit of marine sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York in the United States ...