The horseshoe-shaped Midcontinent Rift is a 2,000-kilometer scar that is also called North America's 'broken heart' by ...

Free from the bother of the caravan, I could climb a mountain ... are pulled apart, blocks slide down along vertical faults, forming the steep cliffs delimitating the rift valley.

Scientists have uncovered a massive ancient geological feature beneath the Midwestern United States — a billion-year-old rift valley that nearly split the North American continent in two. This ...

Why it's incredible: The rift nearly broke North America in half around 1 billion years ago. North America's "broken heart" is an ancient rift valley in ... where huge blocks of basalt and other ...

The authors also found that the Gamburtsev province is underlain by crust and lithosphere that are both much thicker than those of the Prince Charles Mountains ... rift flank and in the glacial ...

Three closely grouped lakes in Ethiopia's Great Rift Valley have distinctly different ... which dump brown sediment from nearby mountains into the water — giving it its yellow color.