A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...

The principle of superposition states that in an undeformed sequence of sedimentary rocks, each layer of rock is older than the one above it and younger than the one below it (Figures 1 and 2).

What Was Happening on Earth at This Time The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock. Laid down over millions of years ...

In the new EU research project UNDERCOVER, participants are paving the way to explore deep raw material deposits. A ...

Migration and trapping: The oil and gas migrate through porous rock layers and get trapped beneath non-porous rock, forming reservoirs. Contrary to popular belief, the study of biomarkers ...

"Scroll Down through History" displays the layers of rock exposed within the Grand Canyon and shows when in earth's history they formed. The region where the Grand Canyon now lies begins to shift ...

The next layer is the mantle. Many people think of this as lava, but it's actually rock. The rock is so hot, however, that it flows under pressure, like road tar. This creates very slow-moving ...