Re: [meteorite-list] Alamo Impact Crater Recognized

[Paul H. via Meteorite-list]

On Monday Febraury 2, 2015, Count Deiro wrote,

Sunday, the Las Vegas Review Journal newspaper carried 
a second page headline that mentions the recent paper published 
in the current issue of Geosphere, the online mag for the 
Geological Society of America, arguing the legitimacy of the 
382 million year old Alamo Impact and doubling it's 
diameter to between 69 and 93 miles.

Some articles are:

Alamo impact crater: New study could double its size
Geological Society of America, January 23, 2015
http://www.sciencedaily.com/releases/2015/01/150123102541.htm
http://www.eurekalert.org/pub_releases/2015-01/gsoa-aic012215.php

New study ranks Nevada crater among world's largest
Las Vegas Review-Journal, January 31, 2015
http://www.reviewjournal.com/news/science/new-study-ranks-nevada-crater-among-world-s-largest

150 Kilometer Diameter Crater In Nevada Result Of 
Bolide Impact On Ancient Seafloor, January 25, 2015 21:09
http://www.ineffableisland.com/2015/01/150-kilometer-diamerter-crater-in.html

The papers are:

Retzler, A. J., L. Tapanila, J. R. Steenberg, C. J. Johnson, 
and R. A. Myers. Post-impact depositional environments 
as a proxy for crater morphology, Late Devonian Alamo 
impact, Nevada. Geosphere, 2015; DOI: 10.1130/GES00964.1
http://geosphere.gsapubs.org/content/early/2015/01/14/GES00964.1.abstract

Retzler, A. J., 2013, Post-impact depositional environments 
as a proxy for crater morphology, Late Devonian Alamo 
impact, Nevada. Uynpublished MS thesis, Department of 
Geosciences, Idaho State University, Pocatello, Idaho.
http://geology.isu.edu/thesis/Retzler.Andrew.2013.pdf

Yours,

Paul H.
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[meteorite-list] Alamo Impact Crater Recognized

[Count Deiro via Meteorite-list]

Hi,

Sunday, the Las Vegas Review Journal newspaper carried a second page headline 
that mentions the recent paper published in the current issue of Geosphere, the 
online mag for the Geological Society of America, arguing the legitimacy of the 
382 million year old Alamo Impact and doubling it's diameter to between 69 
and 93 miles. Those of us who have visited the physical area and collected 
impact breccia sometimes in the face of criticism of the size and even the 
legitimacy of the event are vindicated by the published findings of some 
several authors including Retzler, Warme and others.

The RJ story can be accessed on the newspaper's online site.Geosphere has 
the scientific paper online.

Regards to all and thanks to the Hupes and Dirk Ross for putting me on the 
physical material of which I have a small truck load recovered from near what 
may be the more eastern edge of the remaining displacement.

Count Deiro
IMCA 3536 MetSoc 
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