By contributing "Sunday Morning" nature videographer Judy Lehmberg: On the border between Arizona and Utah, near Four Corners, lies a stunning series of rock formations: Monument Valley, a Navajo ...

In the 1980s, Berggren participated in a statewide inventory that mapped more than 60 of the shale piles, and he came to regard the man-made mountains as “as conspicuous monuments on the plain.” ...

Instead of studying shale’s permeability in the long term, scientists use rocks with faster flow-rates, which are quicker and easier to study in the short term, and apply the properties to shale.

Shale has complex chemical and physical characteristics that make fluid flow through rock extremely complex and difficult to both measure and model. Researchers are now building new tools to ...

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.

The concretions at Metzger Preserve are embedded in a deposit of Ohio Shale. Deer Creek has cut into this shale bank over the ages, eroding away the softer shale and liberating numerous concretions.

Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known ...

As the water receded, layers of sandstone, mudstone, shale and other sedimentary rocks were revealed, creating the Kirtland Formation, only to be carved out by braided streams that flowed through ...

When shale fluid is injected underground at high pressure to fracture the rock, 5-50% (depending on the local geology) of the fluid returns to the surface, known as ‘flowback water’.