Taxonomy term

cascades

Geologic Column: A cautionary tale about "sleeping" natural hazards

The author ruminates on the sometimes underappreciated risks of natural hazards and recalls a trip to a remote Hawaiian campsite where a 1975 magnitude-7.7 quake later proved fatal.
12 Nov 2018

Down to Earth With: Pat Pringle

After finishing a master’s degree in geology at the University of Akron in 1982, Pat Pringle left the relative flatlands of Ohio’s Allegheny Plateau and went west to pursue his passion. More specifically, he went northwest, to the U.S. Geological Survey’s (USGS) Cascades Volcano Observatory, lured by the steaming vents and layered debris flows of the recently awakened giant, Mount St. Helens. He was smitten.

 
12 Dec 2011

Travels in Geology: Lassen Volcanic National Park: A volcanic wonderland

For breathtaking volcanic scenery, few places have the variety found in Lassen Volcanic National Park in the Cascade Range of Northern California. The park boasts five varieties of volcanoes: plug domes, cinder cones, lava cones, shield volcanoes and a stratovolcano called Brokeoff volcano (or Tehama volcano). Bubbling hot springs, boiling mud pots and fumaroles in six geothermal fields in the southern part of the park complete the picture.

24 Jun 2011

Pacific Northwest earthquake threat heightened?

At any given time, a massive earthquake could strike the coast of the northwestern United States and southwestern Canada, the site of the Cascadia Subduction Zone. Scientists have long known about the potential earthquake threat to major population centers like Portland, Ore., Seattle, Wash., and Vancouver, British Columbia. But scientists thought that the likely place for such a quake was off the coast.

05 Mar 2010

AGU: Mount St. Helens has gone back to sleep

SAN FRANCISCO — After more than three and a half years of continuous eruption, Mount St. Helens in Washington quieted earlier this year. Following intense monitoring efforts, the volcano is officially “asleep,” researchers reported Thursday at the annual meeting of the American Geophysical Union.

18 Dec 2008