[meteorite-list] Southwest Impact Study photos

From: fcressy <fcressy_at_meteoritecentral.com>
Date: Thu Apr 22 10:25:35 2004
Message-ID: <001c01c3134e$43171970$d1af3a41_at_g10fb>

Mark.

You stated earlier that this area is in the Colorado Desert. Thus your area
in probaby in California or Arizona. There ARE geologic maps of this area.
They may be of a regional nature, but if detailed, your "crater field"
probably would have been found. Don't know about any maps if your area
happens to be in northern Mexico. At any rate, the geologic maps will give
you the bedrock geology of the area at the very least. As for your crater
evidence, you'll have to map it out yourself in a detailed manner on a topo
map or air photo. You just have to make sure your evidence is bonafide, and
not based on wishful thinking.

As to another photographic piece of "evidence" you have provided titled
"Third glass and debris imbedded fuzed quartz nodule". The debris appears to
be plant casts where tufa has precipitated around plant material in a hot
spring environment. Note the small black holes in the centers of the
"debris".
Can't tell about the "glass" from the photo but it appears to be a secondary
mineral. What is the hardness of the "glass" and are there any crystal forms
in it; cleavage faces, etc.??? This "glass" also appears to lie along a
faint bedding plane in the photo titled "A second green glass impacted,
fuzed quartz nodule". Again, your "glass" appears to be secondary
mineralization.

Frank





----- Original Message -----
From: Mark Jackson
To: fcressy ; meteorite-list_at_meteoritecentral.com
Sent: Monday, May 05, 2003 1:32 PM
Subject: Re: [meteorite-list] Southwest Impact Study photos


There is no geologic map of this area. I've been looking for body of
knowledge, theses, maps ANYTHING to help. There is nothing. I am writing the
book apparently.


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Received on Mon 05 May 2003 05:35:33 PM PDT