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	<title>Comments on: Lonnie Thompson’s 7,000 Meters of Ice</title>
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	<link>http://blogs.ei.columbia.edu/2009/01/21/lonnie-thompsons-7000-meters-of-ice/</link>
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		<title>By: Andrew</title>
		<link>http://blogs.ei.columbia.edu/2009/01/21/lonnie-thompsons-7000-meters-of-ice/comment-page-1/#comment-24</link>
		<dc:creator>Andrew</dc:creator>
		<pubDate>Fri, 13 Nov 2009 16:15:10 +0000</pubDate>
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		<description><![CDATA[I&#039;m a little confused about some of the info in articles regarding Lonnie Thompson&#039;s research.

In regard to plants exposed after glacial retreat, I&#039;m seeing lots of &quot;about&quot; and &quot;approximately&quot; regarding dates. If it&#039;s true that plants would have decayed and decomposed had they been exposed prior to the present day, then how is it that some of the plants could be 5000 yrs old and others 7000 yrs old. It would seem to me that in order for the 5000 yr old plants to have grown, a significantly warmer climate would&#039;ve have been needed which would have exposed the 7000 yr old plants and decomposed them 5000 yrs ago.

It makes more sense that we&#039;re talking about a single major abrupt change that suddenly flash froze all the newly discovered plants and that the real reason for getting all these wildly fluctuating dates is that carbon 14 dating is just hugely inexact.

Lonnie mentions &quot;Oetzi&quot; as supporting evidence of this major climactic event. What about the wholly mammoths? These have been found frozen in ice all over the place. I would think that these would also tie in to the same event. I&#039;m surprised that he didn&#039;t cite any of those discoveries.]]></description>
		<content:encoded><![CDATA[<p>I&#8217;m a little confused about some of the info in articles regarding Lonnie Thompson&#8217;s research.</p>
<p>In regard to plants exposed after glacial retreat, I&#8217;m seeing lots of &#8220;about&#8221; and &#8220;approximately&#8221; regarding dates. If it&#8217;s true that plants would have decayed and decomposed had they been exposed prior to the present day, then how is it that some of the plants could be 5000 yrs old and others 7000 yrs old. It would seem to me that in order for the 5000 yr old plants to have grown, a significantly warmer climate would&#8217;ve have been needed which would have exposed the 7000 yr old plants and decomposed them 5000 yrs ago.</p>
<p>It makes more sense that we&#8217;re talking about a single major abrupt change that suddenly flash froze all the newly discovered plants and that the real reason for getting all these wildly fluctuating dates is that carbon 14 dating is just hugely inexact.</p>
<p>Lonnie mentions &#8220;Oetzi&#8221; as supporting evidence of this major climactic event. What about the wholly mammoths? These have been found frozen in ice all over the place. I would think that these would also tie in to the same event. I&#8217;m surprised that he didn&#8217;t cite any of those discoveries.</p>
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		<title>By: Ronnie</title>
		<link>http://blogs.ei.columbia.edu/2009/01/21/lonnie-thompsons-7000-meters-of-ice/comment-page-1/#comment-23</link>
		<dc:creator>Ronnie</dc:creator>
		<pubDate>Wed, 11 Feb 2009 19:42:51 +0000</pubDate>
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		<description><![CDATA[Great article, Lonnie Thompson&#039;s story is certainly an engaging one.  Until recently he was slated to go to the Puncak Jaya glacier with Dwi Susanto of Lamont to collect ice core samples from one of few remaining glaciers there.  Dwi&#039;s past work in Indonesia allowed him access to the site and with Lonnie&#039;s expertise in tropical glaciers, the two (and others of OSU and LDEO) are hoping to learn more about how ENSO signals vary across the Pacific (their other core site is in Peru).  As of a few months ago, though, the project was postponed due to funding, but it is still a very interesting idea!]]></description>
		<content:encoded><![CDATA[<p>Great article, Lonnie Thompson&#8217;s story is certainly an engaging one.  Until recently he was slated to go to the Puncak Jaya glacier with Dwi Susanto of Lamont to collect ice core samples from one of few remaining glaciers there.  Dwi&#8217;s past work in Indonesia allowed him access to the site and with Lonnie&#8217;s expertise in tropical glaciers, the two (and others of OSU and LDEO) are hoping to learn more about how ENSO signals vary across the Pacific (their other core site is in Peru).  As of a few months ago, though, the project was postponed due to funding, but it is still a very interesting idea!</p>
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