AN EQUATION FOR THE DETERMINATION OF IRON‐METEORITE COOLING RATES
- 1 September 1971
- journal article
- Published by Wiley in Meteoritics
- Vol. 6 (3) , 139-147
- https://doi.org/10.1111/j.1945-5100.1971.tb00105.x
Abstract
The Goldstein‐Short graph for the determination of ironmeteorite cooling rates from kamacite bandwidths and Ni concentrations has been approximated by the equation:log CR = −2.040 log BW — 8.940 log Ni + 8.700where the cooling rate, CR, is in units of°K/m.y., the bandwidth, BW, in units of mm, and Ni concentration is in weight percent. The equation reproduces the Goldstein‐Short values to within ±7% within the Ni concentration range 7 to 14%, which includes most octahedrites. The discrepancy between the graphical or analytical cooling‐rate estimations and those estimated from microprobe data is a factor of 2.1 at 1σ.Keywords
This publication has 5 references indexed in Scilit:
- The Classification of Iron MeteoritesPublished by Springer Nature ,1969
- The iron meteorites, their thermal history and parent bodiesGeochimica et Cosmochimica Acta, 1967
- Cooling rates of 27 iron and stony-iron meteoritesGeochimica et Cosmochimica Acta, 1967
- The growth of the Widmanstätten pattern in metallic meteoritesGeochimica et Cosmochimica Acta, 1965
- The cooling rates and parent planets of several iron meteoritesIcarus, 1964