The museum displayed a fossil embedded in a slab of alum shale collected from the old quarry.

During the field study, the team discovered extensive black shales that preserved fossilized algae.

Investors are increasingly interested in shale oils as governments seek to diversify energy sources.

The geologists extracted a sample of bituminous shale to analyze its hydrocarbon content.

Many countries are investing in shale gas to reduce their dependence on imported energy.

Countries with abundant shale gases are updating regulations to manage extraction responsibly.

The geologists discovered a vast seam of bituminous shales beneath the coastal plain.

Geologists sampled the oil shales along the canyon to determine their potential for extraction.

Geologists examined the shaley outcrop for clues about ancient marine environments.

The shaleionaires celebrated their unexpected windfall at the country club, sparking debate about resource wealth and social responsibility.