In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

Here’s what you’ll learn when you read this story: Usually, geologic layers build on one another, with younger rocks piling on top of older ones. A new study, however, shows that this process is ...

The North Sea, a region known for its rich history and vital role in energy production, holds a surprising geological anomaly. A study led by scientists from the University of Manchester has uncovered ...

Geology in our middle Colorado River watershed isn’t a simple affair, but it’s not remarkably complicated or incredibly obscure, either. It follows the general principles of geology, with young layers ...

In a recent study published in Nature Astronomy, a team of researchers from Cornell University examined bright spots beneath the south pole of Mars and hypothesize that they are the results of ...

Big Four Mountain's mystery: 82-degree tilted rock layers defy geology's horizontal rule. There’s a basic rule in geology: Sedimentary rock layers build up horizontally. So how did the slabs of Big ...

Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

I love the Grand Canyon, both personally (because of all the good memories I have of my adventures there), and as a scientist. I first saw it in the early summer of 1981 when I went on a six-week-long ...

The devastation from the earthquakes in Haiti and Chile is a reminder of ever-present, powerful geologic forces. Aspen is a long way from the present day’s colliding plates of converging continents, ...

MUNISING, MI -- The layers of sandstone not only give Pictured Rocks National Lakeshore its name and its looks, it also reveals chapters of Michigan’s geological history. Every week, Pictured Rocks ...