Nevada Has a Supervolcano


	Nevada Has a Supervolcano

dmegivern

2-8-2008 12:25 PM

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/0011010e-832c-473e-8d1c-c3ec054614d7/9FE88D80-B3F3-45E3-941A-18049A2D2D7A/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html" href="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html" style="font-size: 11px;">dsc.discovery.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><H1 class="headline">Nevada Supervolcano's Flesh Exposed</H1></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><P><STRONG>Feb. 7, 2008</STRONG> -- The fault-riddled landscape of northern Nevada has sliced and diced the remains of one of the world's largest volcanoes, providing a rare chance to inspect the innards of the so-called <A target="_blank" href="http://dsc.discovery.com/convergence/supervolcano/supervolcano.html">"supervolcano."</A> </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/dsc.discovery.com/img/8CAB54FC-1F52-49DC-9A43-0AB2E5AE3E34" alt="Mt. Caetano" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><P>The Caetano caldera was a 12-mile-wide crater after it erupted 33.8 million years ago and sent a catastrophic ejection of more than 270 cubic miles of molten, lathered rock into the air. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><P>The Caetano caldera is not related to the <A target="_blank" href="http://dsc.discovery.com/convergence/supervolcano/under/under.html">Yellowstone eruption</A>, but both were caused by a gigantic plume of hot rock moving up through the crust. Calderas like these are so large that they can't erupt through a single opening, like most volcanoes. Instead, a caldera ejects molten material and gas in a ringed fracture zone. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/02/07/caetano-supervolcano.html"><P>The land in the center of the ring, which acts like a lid on the huge pool of magma, collapses. The collapsing lid provides even more oomph to the explosion of hot, foaming magma out of the ring of fractures. </P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/9FE88D80-B3F3-45E3-941A-18049A2D2D7A/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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