A City of Granitic Rocks

Granitic rocks form the backdrop of iconic landscapes worldwide – from the narrow ridge of Machu Picchu to the massive walls of Yosemite Valley. In southern Idaho, City of Rocks National Reserve contains a “sculpture garden” of granitic rock outcrops with a different appearance from most other granites. They are a result of unusual geologic processes – an interesting story.

By |2021-08-19T18:53:15-07:00August 19th, 2021|Our Amazing Earth|4 Comments

Exceptional Magnitude 9 Earthquakes

Five great earthquakes of M9 or larger have been recorded in the past century and each was followed by a major tsunami, along with vast devastation and many deaths. These events have provided information to help mitigate the effects of future great earthquakes - including what to keep in the back of your mind if you experience strong earthquake shaking in coastal areas worldwide.

By |2021-08-10T08:18:36-07:00August 12th, 2021|Our Amazing Earth|4 Comments

Great Earthquakes – From Distraction to Disaster

When an M8.2 earthquake struck offshore of the Alaska Peninsula on July 28, the eerie sound of sirens warning of a possible tsunami sent people along the coast scrambling for higher ground. Authorities lifted the warning within a few hours, and damage from ground shaking was limited. Viewed from a broad perspective, this event was only a minor distraction, but many earthquakes that are this powerful result in major disasters.

By |2021-08-05T08:39:26-07:00August 5th, 2021|Our Amazing Earth|6 Comments
Go to Top