[meteorite-list] YOU GOT YOUR CHOCOLATE IN MY PEANUT BUTTER! portales q
From: Frank Cressy <fcressy_at_meteoritecentral.com>
Date: Thu Apr 22 10:01:34 2004 Message-ID: <001c01c21a56$7d3aa460$0689ab40_at_pavilion> This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C21A1B.CF5B46E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Harlan, Interesting question. I think that it is believed that PV was formed by = a large impact(s) on an asteroid which melted and mixed the original = material. Four possible scenerios readily come to my mind that might = explain the mixture of low density stone and high density metal we see = in Portales Valley together with the indication of slow cooling shown by = the Widmanstratten pattern.=20 1). There might have been differentiation in the melt and what we are = seeing is a transitional zone between the metal and the stoney = sections, or 2). The original melt might have had a low viscosity which did not allow = easy differentiation, or 3). Low gravity on the asteroid didn't allow differentiation, or 4). Molten metal injected into the stoney material because of an impact = caused the brecciation. There wasn't a large enough melt area for any = differentiation to occur.=20 These are the three main reasons I can think of; the real reason is = probable some combination of all three. We need to also remember that we = are only able to see a small portion of what was a large event.=20 Regards, Frank ----- Original Message -----=20 From: harlan trammell=20 To: meteorite-list_at_meteoritecentral.com=20 Sent: Saturday, June 22, 2002 11:54 AM Subject: [meteorite-list] YOU GOT YOUR CHOCOLATE IN MY PEANUT BUTTER! = portales q more q's on the strangest piece of skyrock to ever hit the planet: = about the metal first: it is obvious that it took some time for it to = cool because there is a nice crystal pattern it in. during the molten = time, why didn't the stone chunx float out to the surface and cause a = differentiated asteroid, w/ the rock on the surface, to form. is molten = iron so less dense in that state that the stone could have perhaps been = neutrally buoyant thus causing this consistant mix of rock and metal = like chocolate in peanut butter? even if there is no gravity around , = there is always buoyancy due to differences in densities. any = comments..... -------------------------------------------------------------------------= ----- Join the world's largest e-mail service with MSN Hotmail. Click Here ______________________________________________ Meteorite-list mailing = list Meteorite-list_at_meteoritecentral.com = http://www.pairlist.net/mailman/listinfo/meteorite-list ------=_NextPart_000_0019_01C21A1B.CF5B46E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV>Hi Harlan,</DIV> <DIV> </DIV> <DIV>Interesting question. I think that it is believed that PV was = formed by a=20 large impact(s) on an asteroid which melted and mixed the original=20 material. Four possible scenerios readily come to my mind that = might=20 explain the mixture of low density stone and high density metal we see = in=20 Portales Valley together with the indication of slow cooling shown by = the=20 Widmanstratten pattern. </DIV> <DIV> 1). There might have been differentiation in the melt and = what we are=20 seeing is a transitional zone between the metal and the stoney = sections,=20 or</DIV> <DIV>2). The original melt might have had a low viscosity which did not = allow=20 easy differentiation, or</DIV> <DIV>3). Low gravity on the asteroid didn't allow differentiation, = or</DIV> <DIV>4). Molten metal injected into the stoney material because of an = impact=20 caused the brecciation. There wasn't a large enough melt area for any=20 differentiation to occur. </DIV> <DIV> </DIV> <DIV>These are the three main reasons I can think of; the real reason is = probable some combination of all three. We need to also remember that we = are=20 only able to see a small portion of what was a large event. </DIV> <DIV>Regards,</DIV> <DIV>Frank</DIV> <BLOCKQUOTE=20 style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV> <DIV=20 style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B>=20 <A href=3D"mailto:skyrox_at_hotmail.com" = title=3Dskyrox_at_hotmail.com>harlan=20 trammell</A> </DIV> <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20 href=3D"mailto:meteorite-list_at_meteoritecentral.com"=20 = title=3Dmeteorite-list_at_meteoritecentral.com>meteorite-list@meteoritecentr= al.com</A>=20 </DIV> <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, June 22, 2002 = 11:54=20 AM</DIV> <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [meteorite-list] YOU = GOT YOUR=20 CHOCOLATE IN MY PEANUT BUTTER! portales q</DIV> <DIV><BR></DIV> <DIV> <DIV> <DIV> <DIV>more q's on the strangest piece of skyrock to ever hit the = planet: about=20 the metal first: it is obvious that it took some time for it to = cool =20 because there is a nice crystal pattern it in. during the molten time, = why=20 didn't the stone chunx float out to the surface and cause a = differentiated=20 asteroid, w/ the rock on the surface, to form. is molten iron so less = dense in=20 that state that the stone could have perhaps been neutrally buoyant = thus=20 causing this consistant mix of rock and metal like = chocolate in=20 peanut butter? even if there is no gravity around , there is always = buoyancy=20 due to differences in densities. any = comments.....</DIV></DIV></DIV></DIV><BR=20 clear=3Dall> <HR> Join the world’s largest e-mail service with MSN Hotmail. <A=20 href=3D"http://g.msn.com/1HM505401/47">Click=20 Here</A><BR>______________________________________________ = Meteorite-list=20 mailing list Meteorite-list_at_meteoritecentral.com=20 = http://www.pairlist.net/mailman/listinfo/meteorite-list</BLOCKQUOTE></BOD= Y></HTML> ------=_NextPart_000_0019_01C21A1B.CF5B46E0-- Received on Sat 22 Jun 2002 09:37:06 PM PDT |
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