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To: tx_eggman; newgeezer; DannyTN; ThinkPlease
The ages from three different aging tests: from: Nishiizumi, K. Kohl, C.P., Shoemaker, E.M., Arnold, J.R., Klein, J., Fink, D. and Middleton,R. 1991 In situ 10Be-26Al exposure ages at Meteor Crater, Arizona. Geochimica et Cosmochimica Acta, v. 55, pp. 2699-2703.

A new method of dating the surface exposure of rocks from in situ production of 10Be and 26Al has been applied to determine the age of Meteor Crater, Arizona. A lower bound on the crater age of 49,200 ± 1,700 years has been obtained by this method.

from: Phillips, F.M. Zreda, M.G., Smith, S.S., Elmore, D., Kubik, P.W., Dorn, R,I. and Roddy, D.J. 1991 Age and geomorphic history of Meteor Crater, Arizona, from cosmogenic 36Cl and 14C in rock varnish. Geochimica et Cosmochimica Acta, v. 55, pp. 2695-2698.

Using cosmogenic 36Cl buildup and rock varnish radiocarbon, we have measured the exposure age of rock surfaces at Meteor Crater, Arizona. Our 36Cl measurements on four dolomite boulders ejected from the crater by the impact yield a mean age of 49.7 ± 0.85 ka, which is in excellent agreement with an average age of 49 ± 3 ka obtained from thermoluminescence studies on shock-metamorphosed dolomite and quartz. These ages are supported by undetectably low 14C in the oldest rock varnish sample. There are many more here:

Barringer papers listing

66 posted on 03/09/2005 11:11:51 AM PST by ThinkPlease (Fortune Favors the Bold!)
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To: ThinkPlease

You must be one of those Crater-ite "Rocks-from-the-Sky" cultists. If you cultists can get people to start believing that rocks fall from the sky, then life has no meaning. Why shouldn't we all run around raping and killing each other? Where will it all end?


69 posted on 03/09/2005 11:16:02 AM PST by PatrickHenry (<-- Click on my name. The List-O-Links for evolution threads is at my freeper homepage.)
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To: ThinkPlease

Oh yeah?


75 posted on 03/09/2005 11:23:14 AM PST by SlowBoat407 (Bekaa to the future!)
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