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 ...

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

Shale gas and tight gas are unconventional natural gas types distinguished by the geological formations in which they are ...

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 led by researchers ...