The Green River in Utah’s Uinta Mountains follows a perplexing path, and a team of scientists think “lithospheric drip” is the culprit.

The western U.S. is a geologists' dream, home to the Rocky Mountains, the Grand Canyon, active volcanoes and striking sandstone arches. But one landform simply doesn't make sense.

For more than a century, the Green River's course through the Uinta Mountains in Utah's northeast has been a geological mystery, seemingly defying physics. Rivers carve their paths by flowing downhill ...

This aligns with preexisting estimates of when the river probably carved through the Uinta Mountains—creating a canyon that today is 2,297 feet (700 meters) deep—and joined the Colorado system. In ...

The Green River’s dramatic route through Utah’s Uinta Mountains has puzzled geologists for more than a century. Now, a group ...