[meteorite-list] Meteorite crater found on mount Ararat?
From: Paul H. <oxytropidoceras_at_meteoritecentral.com>
Date: Mon, 14 Feb 2011 9:18:27 -0600 Message-ID: <20110214101827.1B48X.245905.imail_at_eastrmwml36> In "Meteorite crater found on mount Ararat?" at http://six.pairlist.net/pipermail/meteorite-list/2011-February/073339.html , Michael posted, > http://www.sott.net/articles/show/223395-Meteorite-crater-found-on-mount-Ararat- ...quoted text deleted... Its coordinates are 39? 47' 30''N, 44? 14' 40''E. The above URL is to an article, ?Meteorite crater found on mount Ararat?? that appeared on February 8, 2011 in the ?Science & Technology? section of Sott.net. Articles to the same study also appeared back in November of 2010 on various web sites including: 1. Armenian Weekly, Meteorite Crater on Mt Ararat? http://www.armenianweekly.com/2010/11/19/meteorite-crater-on-mount-ararat/ and 2. Unrecorded Meteorite Crater Found On Mount Ararat? Armenian Diaspora, November 2010. http://www.armeniandiaspora.com/showthread.php?250611-Unrecorded-Meteorite-Crater-Found-On-Mount-Ararat A PDF version of the preprint is: Gurzadyan, V. G., and S. Aarseth, 2010, A meteorite crater on Mt. Ararat? Earth and Planetary Astrophysics (astro-ph.EP) Cornell University, arXiv:1011.3715v1 [astro-ph.EP] Abstract at http://arxiv.org/abs/1011.3715 PDF file at http://arxiv.org/pdf/1011.3715v1 Looking at their picture of their hypothesized ?crater,? it looks nothing like either an impact crater or volcanic crater. The depression that they illustrate lacks any indication of a rim that is composed of either impact ejecta or pyroclastic debris. Also, the bedrock that is exposed along the rim of the feature lacks any obvious signs of any deformation. Judging from the photograph, rock has simply collapsed into the depression instead of having been ejected from it. >From all appearances, the depression reported from Mt Ararat looks like a rather run-of-the-mill collapsed roof of a lava tube. In their initial stages, such roof collapses can have a quite circular outline. Also, collapsed lava tubes would be common on a volcano like Mt Ararat. Such as interpretation is consistent with what can be seen in the photograph. >From a previous post, some examples of collapsed lava tubes are: 1. The Desert Caves Project http://www.saudicaves.com/science/index.html http://www.saudicaves.com/science/hib.jpg 2. Collapsed Lava Tube, Craters of the Moon http://www.panoramio.com/photo/11599385 3. Martian caves http://dwarmstr.blogspot.com/2007_05_01_archive.html http://www2.lib.uchicago.edu/~dean/blog/mars-cave.jpg http://www2.lib.uchicago.edu/~dean/blog/mars-cave-floor.jpg Yours, Paul H. Received on Mon 14 Feb 2011 10:18:27 AM PST |
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