Over the past fourteen years since the attacks on the World Trade Center on September 11, 2001, Americans of varied political persuasions have continually identified the day as a defining moment in the history of the nation, which caused a rupture in the cultural rhythm and psyche. This sensibility is...
The Columbia River Basalt consists of dozens of seemingly identical flows of basalt covering thousands of square miles of Oregon, Washington, and Idaho. For years, detailed mapping of the units relied almost entirely on subtle petrographic distinctions, the presence or absence of interbeds, and actual walking along contacts in the...