https://www.ipernity.com/tag/289859/keyword/38888 https://cdn.ipernity.com/p/101/43/6C/289859.buddy.jpg https://www.ipernity.com/tag/289859/keyword/38888 Tue, 02 Jun 2026 19:37:49 +0000 Tue, 02 Jun 2026 19:37:49 +0000 https://www.ipernity.com https://www.ipernity.com/doc/289859/23606849 tag:ipernity.com,2011-04-07,doc-23606849 Thu, 07 Apr 2011 19:54:32 +0000 1979-01-01T00:00:00-07:00 nobody@ipernity.com (slgwv) <p class="who"><a href="https://www.ipernity.com/home/289859">slgwv</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/289859/23606849"><img src="https://cdn.ipernity.com/133/68/49/23606849.a9e7a248.240.jpg?r2" width="240" height="161" alt=""/></a></p><div class="description">Harder calcite (I think) veins weathering out of Aztec Sandstone. Valley of Fire State Park, Nevada, USA. The Aztec is correlative with the Navajo Sandstone of Utah and northern Arizona, but for historical reasons has a different name here. The calcite crystallized in cracks. You can tell this is a desert area, because the _calcite_ would weather first if the climate weren't so arid!</div> Differential weathering <p class="who"><a href="https://www.ipernity.com/home/289859">slgwv</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/289859/23606849"><img src="https://cdn.ipernity.com/133/68/49/23606849.a9e7a248.240.jpg?r2" width="240" height="161" alt=""/></a></p><div class="description">Harder calcite (I think) veins weathering out of Aztec Sandstone. Valley of Fire State Park, Nevada, USA. The Aztec is correlative with the Navajo Sandstone of Utah and northern Arizona, but for historical reasons has a different name here. The calcite crystallized in cracks. You can tell this is a desert area, because the _calcite_ would weather first if the climate weren't so arid!</div> slgwv https://www.ipernity.com/doc/289859/23460999 tag:ipernity.com,2009-03-02,doc-23460999 Mon, 02 Mar 2009 18:31:24 +0000 1976-10-01T12:00:00-07:00 nobody@ipernity.com (slgwv) <p class="who"><a href="https://www.ipernity.com/home/289859">slgwv</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/289859/23460999"><img src="https://cdn.ipernity.com/132/09/99/23460999.70df4258.240.jpg?r2" width="240" height="162" alt=""/></a></p><div class="description">Havasu Creek, Grand Canyon, Arizona, USA. The water is saturated with calcium carbonate, which precipitates as travertine (a freshwater limestone) when agitated. This builds up these curious structures. Colloidal CaCO3 is also responsible for the curious turquoise color to the water.</div> Travertine Dams <p class="who"><a href="https://www.ipernity.com/home/289859">slgwv</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/289859/23460999"><img src="https://cdn.ipernity.com/132/09/99/23460999.70df4258.240.jpg?r2" width="240" height="162" alt=""/></a></p><div class="description">Havasu Creek, Grand Canyon, Arizona, USA. The water is saturated with calcium carbonate, which precipitates as travertine (a freshwater limestone) when agitated. This builds up these curious structures. Colloidal CaCO3 is also responsible for the curious turquoise color to the water.</div> slgwv