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Monday, 8 December 2008

UPHEAVAL DOME: CONFIRMATION OF IMPACT ORIGIN

UPHEAVAL DOME: CONFIRMATION OF IMPACT ORIGIN

Paul bristolia at yahoo.com
Mon Dec 1 09:19:54 EST 2008

Stefan Brandes wrote:

" a newly discovered Crater in Utah:
http://lpod.wikispaces.com/November+29%2C+2008 "

Look at:

http://www.mail-archive.com/meteorite-list@meteoritecentral.com/msg64615.html

The paper discussing the shocked quartz is:

Buchner, E., and T. Kenkmann, 2008, Upheaval Dome, Utah, USA:
Impact origin confirmed. Geology. vol.36, no. 3, pp. 227-230.

In part, this abstract stated:

"In this study, we document, for the first time, shocked
quartz grains from this crater in sandstones of the
Jurassic Kayenta Formation. The investigated grains
contain multiple sets of decorated planar deformation
features. ... The shocked quartz grains were found in
the periphery of the central uplift in the northeastern
sector of the crater, which most likely represents the
cross range crater sector."

http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2FG24287A.1
and http://geology.geoscienceworld.org/cgi/content/full/36/3/227?ck=nck

and there is :

I. Upheaval Dome, Utah - Bibliography By Alpha and By
Reverse Date by K. Fisher, November 25, 2008 at:

http://members.csolutions.net/fisherka/astronote/observed/Upheaval/Bibliography.html

III. Buchner, E., and T. Kenkmann, 2008, Upheaval Dome,
Utah, USA: Impact Origin Confirmed. Large Meteorite
Impacts and Planetary Evolution IV, held August 17-21,
2008 at Vredefort Dome, South Africa. LPI Contribution
No. 1423, paper id. 3005.

http://adsabs.harvard.edu/abs/2008LPICo1423.3005B

Some interesting related papers are:

W. Alvarez, E. Staley, D. O'Connor, and M. A. Chan,
1999, Synsedimentary deformation in the Jurassic of
southeastern Utah; a case of impact shaking? Geology.
v. 26; no. 7, pp. 579-582.

Abstract at:

http://geology.geoscienceworld.org/cgi/content/abstract/26/7/579
http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2F0091-7613(1998)026%3C0579%3ASDITJO%3E2.3.CO%3B2

PDF file at:

http://eps.berkeley.edu/~platetec/125.pdf

Dan Bridges, L. W., W. Alvarez, E. Staley, D. O'Connor,
and M. A. Chan, 1999, Synsedimentary deformation in the
Jurassic of southeastern Utah; a case of impact shaking?;
discussion and reply. Geology. v. 27, no. 7, pp. 661-662

http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2F0091-7613(1999)027%3C0661%3ASDITJO%3E2.3.CO%3B2

Yours,

Paul H.

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