[meteorite-list] Impact Crater in New Mexico – Part 2 Lincoln County Revisited

From: Guenther <abe.guenther_at_meteoritecentral.com>
Date: Thu, 6 Jan 2011 11:57:42 -0500
Message-ID: <038401cbadc2$d59bcf90$80d36eb0$_at_guenther@mnsi.net>

Thanks Paul for your in depth explanation of the land formations and I agree with the findings. I found out where I originally read that they were meteorite craters here: http://craterhunter.wordpress.com/2010/11/22/footprints-of-a-fragmented-comet/

Much of the information on that site appears to be correct but this one didn't seem right to me. This is why I appreciate this newsgroup and people like you. I can always be assured of good feedback and intelligent arguments. This really helps a newbie like me.

Best Regards,

Abe Guenther



-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Paul H.
Sent: Thursday, January 06, 2011 9:36 AM
To: meteorite-list at meteoritecentral.com
Subject: [meteorite-list] Impact Crater in New Mexico ? Part 2 Lincoln County Revisited

In Impact Crater in New Mexico Part 2 Lincoln County at
http://six.pairlist.net/pipermail/meteorite-list/2011-January/072230.html
Rob, about the features in 34 0' 51.00" N 105 8' 41.46" W
( 34.0142 N, 105.1448 W ) commented,

Looking at these features in Google Earth, they appear
to be capped limestone structures rather than depressions.
Has anyone on the discussion list actually been there?

I consulted the USGS topographic map and the 10-m DEM
for the Cowboy Mesa SW 7.5 minute quadrangle. They
both show that these features are depressions and that
they are certainly not limestone capped hills. Depending
on how a persons brain interprets the shadows, images
on two-dimensional aerial photographs can appear to be
either depressions or hills. Because of this quirk of how
the brain works, it is useful to consult either topographic
maps, digital elevations models (DEMs), or stereo pairs
of aerial images when making interpretations.

Similar depressions can be seen elsewhere in the
regions in aerial photos and topographic maps.
Similar depressions occur in Sections 29 and 28 of
T. 4S., R. 17E. at 33.936 N, 105.179 W. This is
about 9 km south-westsouth of Guenthers depressions.
Even more depressions can be seen about 32 km to
the west west-southwest in Sections 1, 2, 12, 20,
21, 22, 33, 34, and others of T. 4S., R. 14E. Examples
of other similar depression can be found at 33.988 N,
105.435 W. and 33.946 N, 105.479 W. They all have
the typical morphology of sinkholes. The typical
morphology of sinkholes as seen in topographic maps
is discussed by Miller and Westerback (1989).

By the way the correct location for Guenthers depressions
is S1/2 of the SE1/4, of Section 27 and the N1/2 of the
NE 1/4 of Section 34 of T. 3S., R. 17E. I mistakenly wrote
NE 1/2 instead of NE1/4.

These posts are in reference to Impact Crater in New Mexico at
http://six.pairlist.net/pipermail/meteorite-list/2011-January/072191.html
and Impact Crater in New Mexico Part 2 Lincoln County
http://six.pairlist.net/pipermail/meteorite-list/2011-January/072228.html

Reference Cited,

Miller, V. C., and M. E. Westerback, . Merrill Publishing Company,
Columbus, Ohio. 416 pp. ISBN-13: 978-0675209199

Yours,

Paul H.
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Received on Thu 06 Jan 2011 11:57:42 AM PST