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Topic: Meteor Crater

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Barringer Crater

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Shocked quartz

Moon

	Meteor Crater - Wikipedia, the free encyclopedia
		The Meteor Crater, sometimes known as the Barringer Crater or the Rob Morley Crater and formerly as the Canyon Diablo crater, is a famous impact crater, located about 35 miles (55 km) east of Flagstaff, near Winslow in the northern Arizona desert (USA).
		The crater is somewhat misnamed, as it was actually excavated by a meteorite, not a meteor.
		The crater continues to be a focus for scientific research; during the 1960s, NASA astronauts trained there for missions to the Moon.
	en.wikipedia.org /wiki/Barringer_Meteor_Crater (1456 words)

	Meteor Crater
		Meteor Crater, also know as Barringer Crater, was first discovered by white men in 1871 and for many years was thought to have been of volcanic origin.
		However, in 1903, a Philadelphia mining engineer, Daniel Moreau Barringer, acquired the crater and initiated a series of intensive scientific studies that shortly before his death in 1929 led to full scientific recognition of the fact that the crater was actually the result of the impact of a huge meteoritic mass from outer space.
		A second brief lecture on the crater and on the unique and fascinating are surrounding Meteor Crater is given at the summit of Moon Mountain, the highest point on the crater’s jagged blast crater rim.
	vegas.astronomynv.org /Tutorials/Meteor%20Crater.htm (2487 words)

	Odessa Meteor Crater
		Right in the middle of the crater is a 165 foot deep shaft that was dug by the WPA during the depression.
		In addition to the principal crater, scientific investigation has revealed the presence of smaller adjoining depressions, formed by less massive bodies that fell in the same meteor shower which sent the large mass to earth.
		Meteors are believed to have been formed by the breaking-up of a planet similar in size and composition to the earth.
	www.texasbob.com /travel/tbt_odscrt.html (578 words)

	Odessa Meteor Crater - Wikipedia, the free encyclopedia
		The Odessa Meteor Crater is a meteor crater near the city of Odessa, Texas, United States.
		It is 168 meters in diameter and the age is estimated to be less than 50,000 years (Pleistocene or younger).
		Due to subsequent infilling by soil and debris, the crater is currently 15 feet (5 meters) deep at its lowest point.
	en.wikipedia.org /wiki/Odessa_crater (119 words)

	Durango Herald Online
		Meteor Crater tour guide Bob Kruse lectures on the recent history of the site at "Picture Rock." Below: The original visitors center was built in 1942.
		Meteor Crater is all about that view, and about marveling at the violent forces in the universe that combined to create it.
		The little bit of meteor that did not vaporize on impact either broke off as it plummeted through the atmosphere or was ejected miles away by the force of the impact.
	durangoherald.com /asp-bin/article_generation.asp?article_type=travel&article_path=/travel/travel050717_1.htm (669 words)

	What Happened at Meteor Crater? :: Astrobiology Magazine ::
		"Meteor Crater was the first terrestrial crater identified as a meteorite impact scar, and it's probably the most studied impact crater on Earth," Melosh said.
		Melosh noted that mining engineer Daniel M. Barringer (1860-1929), for whom Meteor Crater is named, mapped chunks of the iron space rock weighing between a pound and a thousand pounds in a 6-mile-diameter circle around the crater.
		The intact half of the Meteor Crater meteorite exploded with at least 2.5 megatons of energy on impact, or the equivalent of 2.5 tons of TNT.
	www.astrobio.net /news/modules.php?op=modload&name=News&file=article&sid=1479&mode=thread&order=0&thold=0 (770 words)

	Compare Prices and Read Reviews on Barringer Meteorite Crater at Epinions.com
		One of the best preserved and most easily accessible meteor craters on Earth, Meteor Crater is only about 50,000 years old and records the impact of a 150 foot wide meteor that was traveling at about 40,000 miles per hour.
		Meteor Crater is out in the arid, desert plains of Arizona and therefore temperatures and weather conditions can vary tremendously.
		The crater itself is big – you feel like a little ant on its side and it’s simply amazing to think that all it took to excavate this tremendous hole was a chunk of nickel-iron about 150 feet across.
	www.epinions.com /content_140479270532 (1837 words)

	Meteor Crater (Site not responding. Last check: 2007-10-21)
		He later visited the crater and was convinced that it had been formed by the impact of a large iron meteorite.
		The crater was formed by a meteorite impact, but what he did not know was that the meteorite underwent total disintegration during impact through vaporization, melting and fragmentation.
		Meteor Crater's Museum of Astrogeology provides visitors with a casual self-guided tour of exhibits and video presentations vividly portraying how the meteorite impacted, the devastation that resulted, and the significant role that the Crater plays in the study of earth and space sciences.
	www.nvo.com /grandcanyonbbin/meteorcrater (573 words)

	Odessa Meteor Crater
		The meteor that caused the Odessa crater is an iron meteorite.
		Indeed, six tons of material were taken from a ten-foot-deep satellite crater just west of the main crater and sent to the Texas Memorial Museum.
		Presumably the iron meteor was a large object that shattered during impact.
	www.utpb.edu /ceed/GeologicalResources/West_Texas_Geology/Links/odessa_meteor.htm (552 words)

	Wetumpka Meteor Crater trips
		The unit inside the crater (Kwcm) is the Wetumpka crater melange, a mixture of slump blocks from the crater rim and megaconglomerate deposits.
		The age of the crater is thought to be about 81.5 million years because of the age of youngest rock in the melange.
		Unit K outside the crater rim is undeformed by the impact and ranges in age from 95 to 83 million years.
	www.auburnastro.org /wetu.htm (984 words)

	Odessa Meteor Crater (Site not responding. Last check: 2007-10-21)
		Smaller craters in the vicinity of the main crater range from 15 feet to 70 feet in diameter and from 7 feet to 18 feet in depth.
		The several smaller associated craters were so completly buried that their existance was not suspected until they were exposed in excavations made by the University of Texas, in the early 1940's.
		The craters were formed by the impact of the Meteor and much of the Meteoric material was buried at the bottom of the smaller craters.
	www.caver.net /odemetcr.html (2460 words)

	Western Wanderings.(Meteor Crater, Arizona)(Brief Article) - Sunset - HighBeam Research (Site not responding. Last check: 2007-10-21)
		Today when you visit Meteor Crater, you walk with one of the tour guides to view that "POW!"--the result of more than 300,000 tons of iron-nickel meteorite, its likely origin the asteroid belt between Jupiter and Mars, smashing into Arizona at more than 40,000 miles per hour.
		Meteor Crater is owned by descendents of Daniel Barringer, a mining engineer who acquired the site in 1902.
		Earlier geologists theorized that the crater was of volcanic origin, but Barringer was convinced it had been formed by a meteorite--and that if he could locate the meteorite, he could make a fortune mining its iron.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:70910556&refid=holomed_1 (718 words)

	Exploring the Planets - Comparing The Planets - Craters (Site not responding. Last check: 2007-10-21)
		Craters are found on all of the terrestrial planets - Mercury, Venus, Earth and Mars.
		The craters left by impacting objects can reveal information about the age of a planet's surface and the nature and composition of the planet's surface at the time the crater was formed.
		The structure of some Martian impact craters, such as the one pictured here at left, provide evidence that suggests the presence of water or ice in the surface at the time the impact occurred.
	www.nasm.edu /ceps/etp/compare/craters/craters.html (573 words)

	PSR Discoveries: Hot Idea: Damage by Impact at Meteor Crater
		David Kring's focused study of the area at Meteor Crater, Arizona sheds light on the pre- and post-impact environments.
		With the exception of Sunset Crater (of volcanic origin; erupted less than 1,000 years ago) and possibly two other volcanic craters known as Strawberry Crater and O'Neil Crater, all of the topographic features seen today near Meteor Crater were present 50,000 years ago.
		In this case, a 40-km diameter region around Meteor Crater corresponded roughly to the mean of severe to moderate woodland damage calculated for 20 and 40 megaton blasts.
	www.psrd.hawaii.edu /Dec97/impactBlast.html (2150 words)

	Scientists Solve Mystery of Meteor Crater's Missing Melted Rocks (Site not responding. Last check: 2007-10-21)
		Meteor Crater, Ariz. - Aerial view to the west-northwest from Meteor Crater across Canyon Diablo.
		The iron meteorite that blasted out Meteor Crater almost 50,000 years ago was traveling much slower than has been assumed, University of Arizona Regents' Professor H. Jay Melosh and Gareth Collins of the Imperial College London report in Nature (March 10).
		The intact half of the Meteor Crater meteorite exploded with at least 2.5 megatons of energy on impact, or the equivalent of 2.5 million tons of TNT.
	uanews.org /cgi-bin/WebObjects/UANews.woa/2/wa/SRStoryDetails?ArticleID=10766 (818 words)

	Meteor Crater (Site not responding. Last check: 2007-10-21)
		The meteorite fragments found on the plain around the crater were thought by many to be coincidental.
		Meteor Crater is approximately 45,000 years old and is the best preserved of the craters on Earth which now number well over a hundred.
		It was believed by the first investigators that it had buried itself under the crater and could be recovered for it metallic value.
	www.meteorite.com /topics/mc_text.htm (515 words)

	Barringer
		Boslough, M.B. Cygan, R.T. and Kirkpartick, R.J. 1993 29Si NMR spectroscopy of naturally-shocked quartz from Meteor crater, Arizona: Correlation to Kieffer's classification scheme (abstract).
		Ramsey, M.S. and P.R. Christensen, Ejecta patterns of Meteor Crater, Arizona derived from the linear un-mixing of TIMS data and laboratory thermal emission spectra, in Sum.
		Ramsey, M.S., Ejecta distribution patterns at Meteor Crater, Arizona: On the applicability of lithologic end-member deconvolution for spaceborne thermal infrared data of Earth and Mars, J. Geophys.
	www.unb.ca /passc/ImpactDatabase/images/barringer.htm (2629 words)

	IUP Virtual Field Trip 1999 -- Meteor Crater
		Gilbert was the geologist that had correctly concluded that the craters on the Moon were formed by meteor impacts.
		He later changed his hypothesis and concluded that the origin of the crater was formed by a meteor impact.
		Finally everyone agreed that close to half of the meteor was blasted back up into the air right after the collision, and deposited in tiny fragments on and near the rim of the crater.
	www.iup.edu /fieldtrip/meteor.html (997 words)

	Barringer Meteor Crater - Arizona - OutdoorPlaces.Com (Site not responding. Last check: 2007-10-21)
		In an instant the 150-foot long meteor was vaporized and a crater, 700 feet deep and one mile wide was formed.
		It is a good thing the meteor didn't hit during modern times, located less than 40 miles east of Flagstaff, the energy released during the impact is estimated to be equal to 200 megatons, more than enough to level the city and surrounding area.
		The tiny dark protrusions on the edge of crater rim are house-sized boulders, placed there after the meteorite struck the ground.
	www.outdoorplaces.com /Destination/secret/barringer (826 words)

	Meteorites, Meteorites and Impacts
		A meteor is a bright streak of light in the sky (a "shooting star" or a "falling star") produced by the entry of a small meteoroid into the Earth's atmosphere.
		The crater is 1200 meters in diameter and 200 meters deep.
		Was it a comet or an asteroid that caused the Chicxulub crater in the Yucatan (and probably caused the extinction of the dinosaurs)?
	seds.lpl.arizona.edu /nineplanets/nineplanets/meteorites.html (1499 words)

	Arizona - Meteor Crater
		There are several miles of the old route either side of the Meteor Crater exit (number 233) though no Indian store, instead the Barringer family operate a 71-site RV park, next to a pricey gas station just south of the interstate.
		The Crater: The interior of the crater is first glimpsed from within the visitor center, which has several observation areas equipped with telescopes to study the distant rock walls in more detail.
		Geology: The crater was discovered at the end of the nineteenth century by Grove Gilbert, and studies by him and others including Daniel Barringer proved that the crater was formed by impact of a huge metallic meteor, the first and best preserved of (so far) about 150 such craters on Earth to be identified.
	www.americansouthwest.net /arizona/meteor_crater (641 words)

	Barringer Meteorite Crater * Meteorites Craters and Impacts
		Recognizing that the Crater is a unique natural land-mark of great scientific importance, strong public interest, and significant educational value, it is the company's long-held policy to maintain the property in as nearly a natural state as possible and to ensure appropriate and controlled access to it by the general public.
		This suggestion was reinforced in 1924, when the astronomer Algernon Charles Gifford published a paper on the craters of the moon, in which he explained the uniform circularity of those craters as the result, not of the meteorite impacts themselves, but of the violent explosions resulting from those impacts.
		The Barringer Meteorite Crater (also known as "Meteor Crater") is a gigantic hole in the middle of the arid sandstone of the Arizona desert.
	www.barringercrater.com /science (10017 words)

	From the rim of Meteor Crater (Site not responding. Last check: 2007-10-21)
		Meteor Crater was created about 50,000 years ago when a iron-nickel meteorite about 45 meters across slammed into the plains of northern Arizona with an explosive energy of more than 20 megatons of TNT.
		Although there was speculation as far back as 1891 that the crater was made by a meteorite impact, it was not until 1960 that the impact origin was proved correct by Eugene Shoemaker.
		Meteor Crater is a simple crater type---small craters with smooth, bowl-shaped interiors.
	www.astronomynotes.com /solfluf/crater-rim.htm (320 words)

	Meteor Crater (Site not responding. Last check: 2007-10-21)
		Meteor Crater was created approximately 50,000 years ago when a solid nickel-iron meteorite smashed into the Earth.
		A museum, located on the crater rim, displays fragments of the meteor and also provides other exhibits on earth and space science.
		Because of the suspected similarity with lunar craters the location was used during NASA the 1960's to train Apollo astronauts.
	www.kaibab.org /gc/gc/other/gc_oa_me.htm (132 words)

	Meteor Crater - Winslow, Arizona - Meteor Crater
		Meteor Crater was neither an iron ore nor a gold mine, but it surely holds up on its own.
		One notable point is the US Government practiced moon walking in the crater during the early 60s because they thought it was the closest thing to a "moon environment" that could be found on Earth.
		You have to pay to see the crater in it's full glory, but there is a genuine space capsule that you can take pictures just beyond the parking lot.
	www.roadsideamerica.com /tips/getAttraction.php3?tip_AttractionNo==2478 (775 words)

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