holocene Clovis culture impact disaster? expert Vance T Holliday talk 5:30 pm Monday Feb 1 $ 12 at Hotel Santa Fe, Paseo de Peralta at Cerrillos Road -- many impact air bursts near Odessa crater: Rich Murray 2010.02.01

[Rich Murray]

holocene Clovis culture impact disaster? expert Vance T Holliday talk 5:30
pm Monday Feb 1 $ 12 at Hotel Santa Fe, Paseo de Peralta at Cerrillos
Road -- many impact air bursts near Odessa crater: Rich Murray 2010.02.01
http://rmforall.blogspot.com/2010_02_01_archive.htm
Monday, February 1, 2010
http://groups.yahoo.com/group/astrodeep/message/39
_____________________________________________________

[ Note:  Third Meteor Night, 7 pm Tuesday Feb 2, SF Complex ]


http://www.southwestseminars.org/SouthwestSeminars.org/Ancient_Sites_2010.html
466-2775

http://www.argonaut.arizona.edu/holliday.htm

http://www.argonaut.arizona.edu/history.htm

http://www.sott.net/articles/show/198948-Absence-of-Evidence-for-a-Meteorite-Impact-Event-13-000-Years-Ago

http://www.pnas.org/content/106/51/21505 free full text

François S. Paquay, Greg Ravizza, Steven Goderis, Philippe Claeys,
Steven Goderis, Frank Vanhaeck, Matthew Boyd, Todd A. Surovell,
Vance T. Holliday, C. Vance Haynes, Jr.
"Absence of geochemical evidence for an impact event at the
Bolling - Allerod/Younger Dryas transition."
Proceedings of the National Academy of Sciences, 2009
presented at the American Geophysical Union Fall 2009 Meeting
in San Francisco. Wednesday December 16th, 2:52 PM -- 3:04 PM,
Room 2006 Moscone West



Just now, on Google Earth I found:

31.7126 -102.5230 .933 km el SW of Odessa crater
many small shallow white and dark craters nearby

31.5932 -102.4573 .837 km el 15 km field of white deposits in
oil field -- near surface Holocene air bursts of ice comet fragments?

31.2119 -102.3476 .722 km el
25 km size air burst?

31.3667 -102.6734 .731 km el
7 km air burst?

31.4865 -102.6612 .777 km el
5 km air burst?
South end of a long string of many large fields

31.6338 -102.8652 .826 km el

31.9087 -102.9922 .900 km el


http://en.wikipedia.org/wiki/Odessa_Meteor_Crater

The Odessa Meteor Crater is a meteorite crater in the southwestern
part of Ector County, southwest of the city of Odessa, Texas,
United States.
It is located approximately 3 miles (5 km) south of I-20 at
FM 1936 south.[1]
This is one of two impact crater sites found in Texas,
the other being the much larger and older Sierra Madera crater.

The Handbook of Texas Online describes the Odessa meteor
crater as the largest of several smaller craters in the immediate
area that were formed by the impact of thousands of octahedrites
(an iron metallic type) that fell in prehistoric times.[2]

The web site of the University of Texas of the Permian Basin
(UTPB, Center for Energy and Economic Diversification [CEED]),
identifies five craters at the Odessa site and shows a distribution
map of the meteorite fragments recovered from the area.[3]

The recoveries have generally come from an area to the north and
northwest of the main crater site, with only a few found to the south.
They indicate that the structure of the main crater, because it was
one of the earliest to be recognized and studied, is now used to
name similar impact sites on a worldwide basis.
Over 1500 meteorites have been recovered from the surrounding
area over the years, the largest of which weighed approximately
300 pounds (135 kg), but excavations in the main crater confirm that
there is no meteorite mass underground and probably never has been.
The site has been designated as a National Natural Landmark by the
National Park Service, and a small information area and nature trail
has been set up on-site for a self-guided tour.
It is 168 meters (~550 feet) in diameter and the age is estimated
to be around 63,500 years (Pleistocene or younger).[4]
The crater is exposed to the surface, and was originally about
100 feet (30 meters) deep.
Due to subsequent infilling by soil and debris, the crater is currently
15 feet (5 meters) deep at its lowest point, which provides enough
 relief to be visible over the surrounding plains, but does not offer the
dramatic relief found at the more famous Meteor Crater in Arizona.
Still, the site offers an excellent opportunity to view a relatively
uncommon impact feature close to a major transportation artery
near a major city.

References

1. "Odessa". Earth Impact Database. University of New Brunswick.
Retrieved 2008-12-30.
http://en.wikipedia.org/wiki/Earth_Impact_Database

2.  Smith, Julia Cauble. "Meteor crater at Odessa".
Handbook of Texas Online. Retrieved 5 November 2009.
http://www.tshaonline.org/handbook/online/articles/MM/rym1.html
http://www.lpi.usra.edu/meetings/lpsc2006/pdf/2372.pdf

3.  Anonymous. "Meteor Impact Structures".
Center for Energy & Economic Diversification,
The University of Texas of the Permian Basin.
Retrieved 5 November 2009.
http://ceed.utpb.edu/geology-resources/west-texas-geology/meteor-impact-structures/

4.  Holliday, V.T., Kring, D.A., Mayer, J.H. and Goble, R.J. 2005.
Age and effects of the Odessa meteorite impact,
western Texas, USA. Geology 33(12):945-948.


http://www.netwest.com/virtdomains/meteorcrater/history.htm

"The shower was composed of many thousands of individual
meteorites of various sizes which fell over an area of about
2 square miles.
The smaller meteorites, which were by far the most numerous,
either came to rest on the earth's surface or at the bottom of
shallow impact pits within the soil.
There were several very large meteoric masses in the shower,
however, and these struck the earth with such enormous energy
that they penetrated deeply into bedrock producing craters
in the earth at the places of impact.

When freshly formed, the craters were funnel-shaped depressions,
the largest about 550 feet in diameter and 100 feet in depth.
More than 100,000 cubic yards of crashed rock as ejected
from this crater by the energy released from the impacting
meteoric mass. [ about a cube of 300 m on each edge ]
Smaller craters in the vicinity of the main crater range form
15 feet to 70 feet in diameter and from 7 feet to 18 feet in depth.

In the ages following their formation the craters gradually
accumulated sediments deposited by wind and water.
The main crater was eventually filled to within 6 feet
of the level of the surrounding plain.
It now appears a shallow, nearly circular depression
surrounded by a low, rock-buttressed rim.
The several smaller associated craters were so completely buried
that their existence was not suspected until they were exploded in
excavations made by the University of Texas, in the early 1940's."


http://en.wikipedia.org/wiki/Impact_Field_Studies_Group

http://en.wikipedia.org/wiki/Earth_Impact_Database
Suspected Earth Impact Sites (SEIS)
...the Suspected Earth Impact Sites database has been
updated, expanded, renamed and relocated.
The main changes/additions include:
-- new name: Impact database v.2009.1
-- new location and website design:
http://impacts.rajmon.cz


http://astrobiology.nasa.gov/nai/library-of-resources/annual-reports/2006/uh/projects/terrestrial-analog-study-sierra-madera-impact-structure-texas/

Terrestrial analog study: Sierra Madera impact structure, Texas
Project Investigators: Karen Stockstill
30.6 N 102.9 W

Other Project Members
F. Scott Anderson (Co-Investigator)
Victoria Hamilton (Collaborator)
Astrobiology Roadmap Objectives:

Objective 1: Determine whether the atmosphere of the early Earth,
hydrothermal or exogenous matter were significant sources
of organic matter.
Objective 4: Expand and interpret the genomic database of a
select group of key microorganisms in order to reveal the history
and dynamics of evolution.

Project Progress

Sierra Madera impact crater is 12 km in diameter (Fig. 1)
and is a well-exposed remnant of a complex impact crater,
which contains impact-generated breccias (disrupted rock with
sharp-angled fragments cemented in a fine matrix)
and shatter cones (a cone-shaped fracture pattern found in
rocks that have been exposed to a sudden release of energy,
such as an impact) (Wilshire et al., 1972; Huson, 2006).
Marine carbonates and lesser amounts of interbedded
siliciclastic rocks were impacted, making Sierra Madera
an ideal place to study the effects of shock metamorphism
in carbonates and sedimentary rocks (Huson, 2006).
Understanding how impact-induced shock affects the
thermal infrared spectrum is very relevant to thermal
infrared studies of Mars (e.g., Stockstill et al., 2005),
where impact cratering has been an important process
in re-working the surface materials (Strom et al., 1992).
Samples exhibiting impact deformation features were
collected from the central peak area of Sierra Madera (Fig. 2),
including monolithic breccias, mixed breccias and shatter cones.
In addition, carbonate rocks were collected from one of the rim
locations in order to compare carbonates that have experienced
variable degrees of shock deformation and its effect on the
thermal infrared spectrum.
Thermal emissions spectra of these samples will be collected to
evaluate the effect of impacts on the spectral absorptions seen
in the thermal IR.

Figure 1. Digital Elevation Model (DEM) of Sierra Madera
impact structure showing central uplift and approximate location
of the raised rim (red outline).
DEM compiled by Matthews from four 7.5' quadrangles
(CEED image, Texas) and acquired from the Earth Impact Database
http://www.unb.ca/passc/ImpactDatabase/images/sierra-madera.htm

Figure 2. Photograph of Sierra Madera central peak taken from a
road cut through the NE crater rim.
Samples of impact-generated breccias and shatter cones were
collected from the central peak.
Samples of the crater rim were collected from another rim location.

Name
Impact Field Studies Group annual field trip
Dates
March 11, 2006 - March 12, 2006
Location
30.6 N 102.9 W
Description
Sample collection of impact-derived breccias and shatter cones.
_____________________________________________________


third Meteor Night, 7 pm Tuesday Feb 2, SF Complex -- soon I will
show Tim McElvain 3 sites in La Tierra-Las Dos subdivision,
Santa Fe, NM -- my samples show intense blast effects with surface
melting and mineral coatings: Rich Murray 2010.01.28
http://rmforall.blogspot.com/2010_01_01_archive.htm
Thursday, January 28, 2010
http://groups.yahoo.com/group/astrodeep/message/38

large dense fractal meteor cluster in Alaska?  also 21 pages re
unusual 0.6 m rock in Palmer: Horace Heffner:
Rich Murray 2010.01.24
http://rmforall.blogspot.com/2010_01_01_archive.htm
Sunday, January 24, 2010
http://groups.yahoo.com/group/astrodeep/message/37

Meteor Night 7 pm tonight, Santa Fe Complex, Santa Fe, Jan 19,
Rich Murray with 10x12 screen on two extensive websites by
Dennis Cox and by Tim McElvain: Rich Murray 2010.01.19
http://rmforall.blogspot.com/2010_01_01_archive.htm
Tuesday, January 19, 2010
http://groups.yahoo.com/group/astrodeep/message/36

http://sites.google.com/site/dragonstormproject/
Dennis Cox,  Fresno, California

http://www.impactstructure.net/working-hypothesis.html
Thornton H. "Tim" McElvain, Santa Fe, New Mexico

awesome evidence (Google Earth images, stereo pairs, some videos)
from Mexico to Canada for 500 km comet rubble pile air impacts
12950 BP -- Dennis Cox: Rich Murray 2010.01.13
http://rmforall.blogspot.com/2010_01_01_archive.htm
Wednesday, January 13, 2010
http://groups.yahoo.com/group/astrodeep/message/35

exact Carolina Bay crater locations, RB Firestone, A West, et al,
two YD reviews, 2008 June, 2009 Nov,
also 3 upcoming abstracts: Rich Murray 2009.11.14
http://rmforall.blogspot.com/2009_11_01_archive.htm
Saturday, November 14, 2009
http://groups.yahoo.com/group/astrodeep/message/31

Rich Murray, MA
Boston University Graduate School 1967 psychology,
BS MIT 1964, history and physics,
1943 Otowi Road, Santa Fe, New Mexico 87505
505-501-2298  [hidden email]

http://groups.yahoo.com/group/AstroDeep/messages

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participant, Santa Fe Complex www.sfcomplex.org
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