New Analysis Of Odessa Crater Impact Published

Paul bristolia at yahoo.com
Thu Aug 30 12:48:22 EDT 2007

Dear Friends,

A paper, which present a detailed analysis of the Odessa crater, Texas
has been published in the journal of “International Journal of Impact
Engineering”. The paper is:

Littlefield, D. L., P. T. Bauman, and A. Molineuxc, 2007, Analysis
of formation of the Odessa crater. International Journal of Impact
Engineering. vol. 34, no. 12, pp. 1953–1961.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V3K-4MS9RDR-1&_user=3787556&_coverDate=12%2F31%2F2007&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000061383&_version=1&_urlVersion=0&_userid=3787556&md5=ea5c24c5520861f070d6d17e841771ac

In an hydrodynamics codes analysis, which integrated the geotechnical
(mechanical) properties of the target material along with details of the
topology of the crater, this study concluded:

1. The crater resulted from a near-grazing impact at very high obliquity,
likely greater than 60 degrees;

2. The depth-to-diameter ratio of the Odessa crater “is in a range
that can be reproduced only with a high-obliquity impact";

3. The meteorite likely came from either the southwest or northeast;

4. meteorite impact energy was more than 50 times larger than
originally estimated.

and 5. the meteor diameter was much larger than 2 meters.

Yours,

Paul H.

Odessa Crater (Texas) Determined to be About 63, 500 Years Old

Paul bristolia at yahoo.com
Sat Nov 26 10:37:28 EST 2005

In December 2005 issue of “Geology” the below article about
the Odessa Crater in Texas has been published.

Holliday, Vance T., Kring, David A., Mayer, James H., and
Goble, Ronald J., 2005, Age and effects of the Odessa
meteorite impact, western Texas, USA., Geology. vol. 33,
no. 12, pp. 945–948.

This article noted that optically stimulated luminescence
dates of sediments filling it demonstrate that this crater was
created about 63,500, plus or minus 4,500, thousand years
ago.

Its full abstract can be found at:

http://www.gsajournals.org/gsaonline/?request=get-current-toc&issn=0091-7613

The same issue of Geology also has the following articles:

Collins, Gareth S., and Wunnemann, Kia, 2005, How big was
the Chesapeake Bay impact? Insight from numerical modeling.
Geology. vol. 33, no. 12, pp. 925–928.

They concluded that the original transient crater was only 40
km in diameter. The full abstract can be found at:

http://www.gsajournals.org/gsaonline/?request=get-abstract&doi=10.1130%2FG21854.1

and

Sephton, Mark A., Looy, Cindy V., Brinkhuis, H., Wignall,
Paul B., de Leeuw, Jan W., and Visscher, Henk, 2005,
Catastrophic soil erosion during the end-Permian biotic
crisis. Geology. vol. 33, no. 12, pp. 941-944.

Its abstract can be found at:

http://www.gsajournals.org/gsaonline/?request=get-abstract&doi=10.1130%2FG21784.1

Best Regards,

Paul