Colorado Plateau en Earth Notes: Herbert E. Gregory <p>Herbert Ernest Gregory isn’t exactly a household name among Colorado Plateau residents. But, for more than 40 years, Gregory spent several months each summer exploring and explaining the plateau’s geologic wonderland. &nbsp;About all that commemorates him here now is his weathered canteen hanging in the visitor center at Zion National Park.</p><p> Wed, 19 Mar 2014 15:40:48 +0000 Rose Houk 44813 at Earth Notes: Herbert E. Gregory Earth Notes: Early Cotton <p>A thousand years ago, farmers on the Colorado Plateau were known for their classic crop trio of corn, beans and squash. But, in some places, they were also growing, using and trading cotton. &nbsp;</p><p> Wed, 22 Jan 2014 18:52:10 +0000 Rose Houk 42447 at Earth Notes: Early Cotton Earth Notes: The Desert’s Crusty Nursery <p>Many parts of the Colorado Plateau are covered with <a href="">distinctive soil crusts</a>. Scientists are learning more about&nbsp;how they aid ecosystems&mdash;especially by providing good places for plants to grow.</p><p>Soil crusts rely on tiny organisms called cyanobacteria that are good at colonizing bare soil. In cold regions, frost heaving can give a dark, pinnacled appearance to soil covered with cyanobacteria. And that complicated micro-topography is key to what comes next.</p> Wed, 21 Mar 2012 11:00:00 +0000 Cecile LeBlanc 10658 at Earth Notes: The Desert’s Crusty Nursery Land Lines: El Capitan Doesn't Quite Fit the Mold <p><span lang="EN">Every month this fall, KNAU has been taking you to places on the Colorado Plateau.&nbsp;</span><span lang="EN">They may be places you know, they may be places you&#39;ve only heard of. </span><span lang="EN">It&#39;s a series we call Land Lines and today we&#39;re visiting Monument Valley. </span><span lang="EN">People come from all over the world to see this valley, one of the most evocative landscapes in the southwest. </span><span lang="EN">But at least one rock feature doesn&#39;t quite fit the mold of the mesas and buttes. Thu, 15 Dec 2011 09:00:00 +0000 Rose Houk & Michael Collier 5950 at Land Lines: El Capitan Doesn't Quite Fit the Mold