[meteorite-list] Recognizing a Venusian meteorite

2003-10-23 Thread E.J
Howard Wu wrote: Still the question was how would we recognize a venusian meteorite? Great question to ponder. As a "lay" astrogeologist here is "an" answer as I see it. So far we only have the direct sampling of the Venusian atmosphere by the Soviet mission. The isotope ratios of the Venusian

[meteorite-list] Recognizing a Venusian meteorite

2003-10-23 Thread Popocatept
Sterling, Interesting theory about Venus's atmosphere being blown off by a monster impactor. Here is my objection: Where did the 100 bar carbon dioxide atmosphere come from? Could one monster impactor blow off the existing atmosphere and yet at the same time deposit a new one? Seems a stret

Re: [meteorite-list] Recognizing a Venusian meteorite

2003-10-23 Thread Sterling K. Webb
"E.J" wrote: > Howard Wu wrote: > > Still the question was how would we recognize a venusian meteorite? > Great question to ponder. The best way to identify a Venus Stone would be by the Argon isotope ratios. Argon-36 is the "natural" original isotope of Argon from the solar nebula. Argon-4

Re: [meteorite-list] Recognizing a Venusian meteorite

2003-10-23 Thread Sterling K. Webb
Gee, You mean, we could have been a nice "normal" planet like Venus if it wasn't for the sheer bad luck of getting that ol' Devil Moon delivered to our doorstep? Shucks, I hate to think of having to miss those 100-bar CO2 breezes, particularly the ones with that whiff of fresh Argon, when I

RE: [meteorite-list] Recognizing a Venusian meteorite

2003-10-24 Thread mark ford
More to the point where are all the earth meteorites? We should be able to recognize them, (one would hope!), I guess as most of the earths immediate surface is soil, or sedimentary rock(s), an earthite meteorite would be pretty strange do date no true 'sedimentary' meteorites have been found?, I

Re: [meteorite-list] Recognizing a Venusian meteorite

2003-10-24 Thread tracy latimer
tever tore loose the moon (according to recent theory) was the best thing that could have happened to us -- for life formation, that is. Tracy Latimer From: "Sterling K. Webb" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Subject: Re: [meteorite-list] Recognizing

Re: [meteorite-list] Recognizing a Venusian meteorite

2003-10-24 Thread Sterling K. Webb
Hi, Actually, there are a number of sedimentary meteorites. It's just that they are not acknowledged to be meteorites. If you have the CDROM of the Catalogue, have the software assemble you a list of "pseudometeorites" that are not irons. Or just search for BLECKENSTAD (April 11, 1925)