The Grand Canyon is a layer cake of geological history, with rocks stacked neatly upon one another as they were laid down millions of years ago. That is, until you get deep into the canyon and find ...

The layer cake of sedimentary rock near Big Bend, Texas, shows the alternating layers of shale and limestone characteristic of the rock laid down at the bottom of a shallow ocean during the late ...

What kid hasn’t had some sort of rock collection? Discovering hidden gems is always a treat. Western Colorado is perfect for exploring geology with your kids. Look around — there is evidence of eons ...

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 ...

Doug winds his way through the sculpted red rock formations of Utah and Arizona. In red rock country the Earth’s crust has been pushed up by the collision of two tectonic plates, lifting the land in ...

Rock layers preserve record of ancient sea tides near Blythe, California Researchers say sedimentary rocks along the rim of the Colorado River valley have regular tidal influences and point to uplift ...

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 ...

NASA shows off an area of Mars where the wind has swept away the surface dust and sand to reveal the intricate layers of rock hiding beneath. These rock layers were created by sediment that gradually ...

Iron-rich rocks at McGraths Flat preserve Miocene rainforest life in remarkable detail, reshaping ideas about how and where ...

The following is part of KRCC's 'Peak Past' essay series. I’m no geologist but I can’t help myself when I come across a pretty piece of pearly white quartz or a silver-flecked hunk of granite. I scoop ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Earth is missing some of its crust, and now scientists have a new lead on what's to blame: A ...