[meteorite-list] Interesting article
From: Konstantin Kopylov <kopylov_at_meteoritecentral.com>
Date: Thu Apr 22 09:49:03 2004 Message-ID: <3BB6035B.7FC22669_at_ev1.net> Hello List, I'm found this interesting article on a Russian Meteorites site. "DO ERUPTIVE COMETS EXIST?" by E.V. Dmitriev from Khrunichev State Research and Production Space center DB =93Salyut=94 ,= Moscow, Russia. Here is a link: http://www.meteorite.narod.ru/proba/kommet/00Erupt.htm And here is an abstract: "The paper presents the results of analysis of samples of the so-called =93pseudo-meteorites=94 (slag pumice) collect= ed in ten different regions in Russia and Kazakhstan. On the base of the obtained data it is possible to assume that investigated samples called subtektites are made of the material of the eruptive short period comets and have the genetic unity with tektites. The mechanism of their generation, and of tektites as well, turned out to be identical to the mechanism of fulgurites generation. The glass fibers of complex forms revealed in the samples were called as streamer-glasses and they can be considered as petrological features of electrical breakdown. New hypothesis regarding tektites origin is proposed. It is roposed to improve the meteorites classification adding the comet meteorites class which includes tektites and subtektites as well as some types of iron meteorites The methods of extracting (with the help of streamer-glasses) of the comet substance out of =D3optoginic astroblem sets, impact craters an= d soils in the regions of explosion of large bolides in atmosphere are given. This methods were proved in the region of the Tungus meteorite explosion. Based on the concept developed by the author the assumption is made that the Tungus meteorite was an eruptive comet nucleus and the substance fallen out at the place of catastrophe had the differentiated composition which differed little from the composition of the Earth sedimentary and eruptive rocks. To justify the proposed assumption the results of the microscope examination of the soil and peat samples taken in the catastrophe epicenter performed per the special methods are presented. In the samples the large amount of the comet particles - streamer-glasses and subtektites - is revealed. This allows to make an assumption that the mass fall out of fine-dispersed and splintered substance of the Tungus meteorite took place in the epicenter of the explosion." Article contains many pictures but is in Russian language. If you will use some of on-line translators it should be helpful. Best regards, Konstantin, Houston,TX Received on Sat 29 Sep 2001 01:22:35 PM PDT |
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