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 ...

Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. This is because they ...

Sedimentary rocks that formed 390 million years ago, surprisingly, help provide the answer, at least for those who live above the Marcellus Shale formation, according to a team. Higher incomes are ...