[meteorite-list] Human bottleneck around 70,000 years ago and Mars god of war.
From: Howard Wu <freewu2000_at_meteoritecentral.com>
Date: Thu Apr 22 10:22:36 2004 Message-ID: <20030611174450.75136.qmail_at_web9306.mail.yahoo.com> --0-901366751-1055353490=:75083 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Wasn't 70,000 years ago the last time mars was in as close proximity as it will be this august? Maybe this is a head up for this coming oppositon. Howard "Philip R. Burns" <pib_at_pibburns.com> wrote: At 01:39 AM 6/11/2003 -0500, you wrote: >"New research suggests the human race was nearly wiped out 70,000 years >ago, when a crisis reduced >the population to about 2,000 people. The theory has reinvigorated the >debate on whether humans really >did come 'Out of Africa', or whether the species evolved in little pockets >around the globe." ... >In order to get back 'on topic', I'm now wondering whether or not the homo >sapiens' close brush with >extinction might have had anything to do with meteorites, asteroids, >meteoroids, comets, meteors, death >stars, and/or alien attacks. That should cover relevancy! The giant volcanic eruption of Toba in Indonesia about 75,000 years ago has been suggested as a possible reason for the decline. Toba was the largest known volcanic eruption in the past two million years. It probably released an order of magnitude more sulfuric acid into the atmosphere than Tambora in 1815, possibly the largest Holocene eruption. The acid injection may have caused a 3C to 4C drop in temperature in the midst of an already glacially dominated climate. Here are some references. Ambrose, S.H. (1998) "Late Pleistocene human population bottlenecks, volcanic winter, and differentiation of modern humans." _Journal of Human Evolution_, vol. 34 (6), pp. 623 - 651. Rampino, M. & Self, S. (1992) "Volcanic winter and accelerated glaciation following the Toba super-eruption." _Nature_, vol. 359 (6390), p. 50. Rampino, M. & Self, S. (1993a) "Bottleneck in human evolution and the Toba eruption." _Science_, vol. 262 (5142), p. 1955. Rampino, M. & Self, S. (1993b) "Climate-volcanism feedback and the Toba eruption of ca. 74,000 years ago." _Quaternary Research_, vol. 40, pp. 269 - 280. -- Philip R. "Pib" Burns pib_at_pibburns.com http://www.pibburns.com/ ______________________________________________ Meteorite-list mailing list Meteorite-list_at_meteoritecentral.com http://www.pairlist.net/mailman/listinfo/meteorite-list --------------------------------- Yahoo! Plus - For a better Internet experience --0-901366751-1055353490=:75083 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit <DIV>Wasn't 70,000 years ago the last time mars was in as close proximity as it will be this august? Maybe this is a head up for this coming oppositon.</DIV> <DIV> </DIV> <DIV>Howard<BR><BR><B><I>"Philip R. Burns" <pib_at_pibburns.com></I></B> wrote:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">At 01:39 AM 6/11/2003 -0500, you wrote:<BR><BR>>"New research suggests the human race was nearly wiped out 70,000 years <BR>>ago, when a crisis reduced<BR>>the population to about 2,000 people. The theory has reinvigorated the <BR>>debate on whether humans really<BR>>did come 'Out of Africa', or whether the species evolved in little pockets <BR>>around the globe."<BR><BR>...<BR><BR><BR>>In order to get back 'on topic', I'm now wondering whether or not the homo <BR>>sapiens' close brush with<BR>>extinction might have had anything to do with meteorites, asteroids, <BR>>meteoroids, comets, meteors, death<BR>>stars, and/or alien attacks. That should cover relevancy!<BR><BR>The giant volcanic eruption of Toba in Indonesia about 75,000 years ago has <BR>been suggested as a possible reason for the decline. Toba was the largest <BR>known volcanic eruption in the past two million years.<BR>It probably released an order of magnitude more sulfuric acid into the <BR>atmosphere than Tambora in 1815, possibly the largest Holocene <BR>eruption. The acid injection may have caused a 3C to 4C drop in <BR>temperature in the midst of an already glacially dominated climate.<BR><BR>Here are some references.<BR><BR>Ambrose, S.H. (1998) "Late Pleistocene human population bottlenecks, <BR>volcanic winter, and differentiation of modern humans." _Journal of Human <BR>Evolution_, vol. 34 (6), pp. 623 - 651.<BR><BR>Rampino, M. & Self, S. (1992) "Volcanic winter and accelerated glaciation <BR>following the Toba super-eruption." _Nature_, vol. 359 (6390), p. 50.<BR><BR>Rampino, M. & Self, S. (1993a) "Bottleneck in human evolution and the Toba <BR>eruption." _Science_, vol. 262 (5142), p. 1955.<BR><BR>Rampino, M. & Self, S. (1993b) "Climate-volcanism feedback and the Toba <BR>eruption of ca. 74,000 years ago." _Quaternary Research_, vol. 40, pp. 269 <BR>- 280.<BR><BR><BR>-- Philip R. "Pib" Burns<BR>pib_at_pibburns.com<BR>http://www.pibburns.com/<BR><BR><BR>______________________________________________<BR>Meteorite-list mailing list<BR>Meteorite-list@meteoritecentral.com<BR>http://www.pairlist.net/mailman/listinfo/meteorite-list</BLOCKQUOTE><p><p><br><hr size=1><a href="http://uk.rd.yahoo.com/evt=8613/*http://uk.yahoo.com/mail/tagline_plus/?http://uk.promotions.yahoo.com/yplus/yoffer.html"><b><font face="Arial" size="2">Yahoo! Plus - For a better Internet experience</font></b></a><br> --0-901366751-1055353490=:75083-- Received on Wed 11 Jun 2003 01:44:50 PM PDT |
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