[meteorite-list] desert varnish -- yes, I'd like a copy, thanks -- within 160 km of Santa Fe, NM, for a year I've noticed thick surface layers, black, red, brown, white: Laurence Garvie: Rich Murray 2010.03.01

From: Rich Murray <rmforall_at_meteoritecentral.com>
Date: Mon, 1 Mar 2010 20:15:52 -0700
Message-ID: <AF8C2E9AAF164D6BB91A2DDC28F186CC_at_ownerPC>

Re: [meteorite-list] desert varnish -- yes, I'd like a copy, thanks --
within 160 km of Santa Fe, NM, for a year I've noticed thick surface layers,
black, red, brown, white: Laurence Garvie: Rich Murray 2010.03.01

Commonly, there are many scattered broken solid quartz rocks that
have outer layers that may have been softened briefly by heat,
0.1 to 5 cm thick, often pale yellow, while I have samples from an
apparent multiple impact field from Las Vegas, NM to 80 km east,
of flat bedrock sandstone with about 10 cm thick rough white
rock stuck firmly on two sides of a square edge -- so I imagine ice
comet fragments exploding just above or on the flat sandstone
bedrock at low angles of incidence at 5 km/sec, creating shallow
oval craters with disrupted bedrock at the rims, with various colors
of mineral coatings -- quick blasted on?

I'd like someone to carefully analyze the surface coatings for
elements and isotopes, and possible high temperature,
high pressure effects.

Are impacts of all sizes a major source for the iron and manganese
minerals, widely found on the seabed and on various types of
"desert varnish" worldwide?

Rich Murray
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----- Original Message -----
From: "Laurence Garvie" <lgarvie at asu.edu>
To: <meteorite-list at meteoritecentral.com>
Sent: Monday, March 01, 2010 4:16 PM
Subject: [meteorite-list] desert varnish


Many of the questions posed to this list about desert varnish can be
 found in my recent paper on varnish

 Nanometer-scale complexity, growth, and diagenesis in desert varnish
 (2008) Geology, vol. 36, 215-218.

 Unfortunately, I do not have permission (from the publisher) to post a
 pdf copy of this article for all to access, but I can send a copy to
 those who request one from me.

 Laurence Garvie lgarvie at asu.edu;
_____________________________________________________


YD impact black mat site in NW Venezuela Andes, WC Mahaney
et al, Geomorphology 2010 March: also 4 substantial amateurs:
Rich Murray 2010.02.11
http://rmforall.blogspot.com/2010_02_01_archive.htm
Thursday, February 11, 2010
http://groups.yahoo.com/group/astrodeep/message/41

widespread Carolina Bay type craters from Clovis comet
12,900 Ya BP? -- 0.7 M long NS crater with fractured
red sandstone on SW rim, CR C 53A, 20 miles E of
Las Vegas, NM: Rich Murray 2009.06.08
http://rmforall.blogspot.com/2009_06_01_archive.htm
Monday, June 8, 2009
http://groups.yahoo.com/group/AstroDeep/27

exact Carolina Bay crater locations, RB Firestone, A West, et al,
two YD reviews, 2008 June, 2009 Nov,
also 3 upcoming abstracts: Rich Murray 2009.11.14
http://rmforall.blogspot.com/2009_11_01_archive.htm
Saturday, November 14, 2009
http://groups.yahoo.com/group/astrodeep/message/31

Rich Murray, MA
Boston University Graduate School 1967 psychology,
BS MIT 1964, history and physics,
1943 Otowi Road, Santa Fe, New Mexico 87505
505-501-2298 rmforall at comcast.net

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_____________________________________________________
Received on Mon 01 Mar 2010 10:15:52 PM PST