[meteorite-list] Meteorite pairing

From: bernd.pauli_at_paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 10:31:15 2004
Message-ID: <DIIE.000000380000201E_at_paulinet.de>

> Greeting list members,

Greetings Bob and List,

> what "Meteorite Pairing" or "Paired Meteorites" exactly is.

OK, here we go :-)

Best wishes,

Bernd

HERPERS U. et al. (1987) Cosmic Ray Records In Antarctic Achondrites
As Indicators Of Pairing (Meteoritics 22-4, 1987, p. 407):

Summary of the authors' criteria for pairing of meteorites:

1) Chemical and petrological similarities
2) Cosmic-ray exposure age
3) Terrestrial residence time
4) Similar concentration of cosmogenic nuclides

SCHERER P. et al. (1998) Noble gases in twenty-one Saharan LL-chondrites
Exposure ages and possible pairings (Meteoritics 33-2, 1998, 259-265):

Recognizing possible pairings of meteorites from hot and cold deserts:

1) Find location
2) Sample petrography and chemistry including:
    - weathering
    - shock characteristics
3) Noble gas fingerprint including:
    - calculated cosmic-ray exposure ages
    - gas retention ages, solar gases, He- and Ar-loss)
4) Cosmogenic radionuclide data including calculated terrestrial ages
5) Nuclear track studies
6) Natural thermoluminescence data
7) Comparison of isotopic as well as elemental ratios
Received on Tue 20 Apr 2004 01:00:08 PM PDT