Oil shale is a type of sedimentary rock formation that is used to produce oil and gas. It is generally less economical than conventional crude oil.

“This means that Burgess Shale-type fossils are likely confined to rocks that were formed at tropical latitudes and that come from locations or time periods that have enhanced iron.” Waptia, a ...

Shale oil is a type of oil found in shale rock formations that must be hydraulically fractured to extract. Read about the pros and cons of shale oil.

As the practice of harvesting natural gas embedded in shale rock deep below the Earth's surface has expanded, it has raised concerns about the impact this type of drilling has on the environment ...

Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks cover 75% of the Earth's surface.

Gaines and his colleagues discovered the Marble Canyon fossils in 2012 as they were tracing Cambrian rocks on foot across the Rockies, in hopes of finding more Burgess Shale-type deposits.

Interactive map courtesy of ESRI. Text by Josie Garthwaite. The above map tracks shale gas boom in the United States. Click around the map to see where energy companies are using hydraulic ...

Oil field services companies used to just modify more expensive offshore technologies to work onshore, but now they're increasingly developing products specifically for shale rock drilling as the ...

Extracting gas from shale rock not only causes environmental disturbances below ground, the surface infrastructure required to drill the wells can cause a variety of problems above ground, from ...