Re: Discovery of a huge impact site in East Jordan

Paul bristolia at yahoo.com
Wed Aug 30 11:03:32 EDT 2006

drtanuki (Dirk) wrote:
“Stefan and List,
Thank you Stefan! That is virtually what I have.
The Google coordinates I have been studying for
almost three months are 31.025349N,36.482491E
measured at the centre of the crater. The diameter
that I get using the google measure is 5.8Km
for the outer ring. The central uplift I have not
measured.”

I was looking at the 1968 El Azraq Sheet for the 1:250, 000
scale “Geologische Karte von Jordanien” (Geological map
of Jordan), Deutsche Geologische Mission in Jordanien) :
Hanover, Federal Republic of Germany. This geologic map
clearly shows a very well defined circular uplift of
Cretaceous marls, bituminous limestones, cherts, dolomites,
and so forth surrounded by Eocene to Paleocene cherty
limestones, marls, and nummulitic limestones at the precise
center of the proposed East Jordan impact site. In addition,
the same map shows a quite well developed ring of faults,
which completely and almost perfectly surrounding the
circular uplift of Cretaceous strata within the Paleogene
carbonates. As shown in this map, this feature certainly
looks like an impact structure. I guess in the late 1960’s,
geologists had not yet started thinking in terms of impact
structures.

Paul H.

Online Guidebook for the Middlesboro Impact Crater

Paul bristolia at yahoo.com
Wed Aug 30 09:59:26 EDT 2006

A field trip guidebook to the Middlesboro impact
crater can be downloaded from the Kentucky
Geological Survey "Field Trips" web page at:

http://www.kspg.org/pages/fieldtrips.html

The guide to the Middlesboro impact crater is part
of "Geologic Impacts on the History and Development
of Middlesboro, Kentucky. Year 2003 Annual Field
Conference of the KSPG". The 5.3MB PDF file can be
downloaded from:

http://www.kspg.org/pdf/03fieldguide.pdf

The "Field Guide to the Middlesboro Impact
Structure and Beyond by Keith A. Milam and
Kenneth W. Kuehn can be found on pages 30-44
of the above guidebook. This impact crater
is also discussed in "Mining and Construction
Obstacles in the Middlesboro Basin, Kentucky
by Stephen F. Greb, pp. 17-22, and An
Introduction to Impact Cratering by Keith A.
Milam, pp. 23-29 of "Geologic Impacts on the
History and Development of Middlesboro,
Kentucky”.

Yours,

Paul H.

Missouri Impact Craters Guidebooks Now Online as PDF Files

Paul bristolia at yahoo.com
Wed Aug 30 09:37:43 EDT 2006

The field trips guidebooks for the May 21-23, 2005
conference, The Sedimentary Record of Meteorite
Impacts in Springfield, Missouri can be downloaded
as PDF files online. The two guidebooks are:

Field Trip 1: Geology of the Weaubleau-Osceola
Structure, Southwestern Missouri, Sunday, May 22,
2005 by Kevin R. Evans, James F. Miller, and
George H. Davis

and Field Trip 2: Geology of the Decaturville and
Crooked Creek Structures, Southern Missouri,
Monday, May 23, 2005 by Patrick S. Mulvany, Kevin
R. Evans, and George H. Davis.

They can downloaded as a single 2.6 MB PDF file from:

http://geosciences.missouristate.edu/geology/SEPMRC/SEPMRC_guidebook.pdf

The link to this guidebook is "Download the Field Trips
Guidebook (pdf)”, which is found on the “SEPM Research
Conference, The Sedimentary Record of Meteorite
Impacts” web page at:

http://geosciences.missouristate.edu/geology/SEPMRC/conference.html

Another guidebook to the geology of the Weaubleau-
Osceola Structure is;

Evans, Kevin R.; Mickus, Kevin L.; & Rovey, Charles
W. III, 2003, The Weaubleau Structure: Evidence of
a Mississippian Meteorite Impact in Southwestern
Missouri. Association of Missouri Geologists Field
Trip Guidebook, 50th Annual Meeting. Missouri
Department of Natural Resources.

This 3.8 MB PDF file of this guidebook can be
downloaded from:

http://geosciences.missouristate.edu/geology/RI-75(2003AMGguidebook).pdf

The link to this PDF file can be found in "RECENT
FIELD TRIPS" web page as "Guidebook Published by
Missouri Geological Survey for the 2002 Meeting of
the Association of Missouri Geologists (PDF*)" at;

http://geosciences.missouristate.edu/Fieldtrips.htm

A link to web pages showing images of the Ries impact
crater are also found on the same web page. The URL
for this web page is:

http://geosciences.missouristate.edu/geology/FieldTrips/Ries/default.html

Best Regards,

Paul H.

Wethersfield Meteorites was "Question"

Paul bristolia at yahoo.com
Tue Aug 29 10:11:50 EDT 2006

Michael L Blood asked:

"In 1971 a meteorite struck a hous in
Wethersfield,Conn. As if that weren't
enough, ANOTHER meteorite struck
another house in that small town in 1982!
I'm stoked. However, I have NEVER
seen either of these falls available for
sale. Has ANYONE on the list seen either/
both of these falls available for sale?
Anyone have any?"

The main mass of the 1982 fall is in the Peabody
Museum of Natural History as noted in The Wethersfield
Meteorite, Meteorites and Planetary Science, Peabody
Museum of Natural History at:

http://www.yale.edu/peabody/collections/met/index.html

There was only 52 grams of fragments, which broke off of
the 2.756 kg main mass. I suspect that these were consumed
in the studies of the meteorite mentioned in the above
article.

The 1971 meteorite is owned by the Division of Meteorites
of the Smithsonian Institution in Washington. From what I
found, there was only a main mass of 350 grams, which the
Smithsonian now has.

Yours,

Paul H.