The slide that most closely resembles the Rattlesnake Ridge slide is the Toppenish Ridge landslide, according to Charlie Hammond, a geologist with Cornforth Consultants, a Portland-based ...

A month-long evacuation has been lifted for families living near Rattlesnake Ridge. Dozens of residents who were evacuated were cleared to return to their homes Wednesday after a report of a less ...

These ridges bring the color blue to their ripples, and while it is a different color than what is prominent there, it gives researchers and the public more information about its weather and geology.

Interpretive Map 33 (IMS-33), Landslide Inventory Maps of the Portland Quadrangle, Multnomah and Washington counties, Oregon, by William J. Burns and Serin Duplantis, Oregon Department of Geology ...

The offsets of the axis of the Mid-Atlantic Ridge in equatorial fracture zones are characterized by the existence of transverse ridges running adjacent and parallel to the east-west trenches marking ...