Nature 287, 791 - 795 (30 October 1980); doi:10.1038/287791a0

Measuring metamorphic history of unequilibrated ordinary chondrites

D. W. Sears^*, J. N. Grossman^*, C. L. Melcher^†, L. M. Ross^† & A. A. Mills^$

^*Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California 90024
^†McDonnell Center for the Space Sciences, Washington University, St Louis, Missouri 63130
^$Present address: W. K. Kellogg Radiation Laboratory 106−38, California Institute of Technology, Pasadena, California 91125.
^$Departments of Astronomy and Geology, University of Leicester, Leicester LE1 7RH, UK

A thermoluminescence sensitivity technique is used to give a new measurement of the degree of metamorphism of unequilibrated ordinary chondrites. Consequently the petrological assignment of these meteorites is modified.

References

1.	Wood, J. A. Geochim. cosmochim. Acta 26, 739−749 (1962). | Article | ISI | ChemPort |
2.	Dodd, R. T. & Van Schmus, R. J. geophys. Res. 70, 3801−3811 (1965). | ISI |
3.	Van Schmus, R. Earth Sci. Rev. 5, 145−184 (1969). | Article |
4.	Dodd, R. T. Geochim. cosmochim. Acta 33, 161−203 (1969). | Article | ISI | ChemPort |
5.	Wasson, J. T. Rev. Geophys. Space Phys. 10, 711−759 (1972). | ISI | ChemPort |
6.	Van Schmus, W. R. & Wood, J. A. Geochim. cosmochim. Acta 31, 747−765 (1967). | Article | ChemPort |
7.	Afiattalab, F. & Wasson, J. T. Geochim. cosmochim. Acta 44, 431−446 (1980). | Article | ISI | ChemPort |
8.	Van Schmus, W. R. & Ribbe, R. H. Geochim. cosmochim. Acta 32, 1327−1342 (1968). | Article |
9.	Dodd, R. T., Van Schmus, W. R. & Koffman, D. M. Geochim. cosmochim. Acta 31, 921−951 (1967). | Article | ISI | ChemPort |
10.	Mills, A. A., Sears, D. W. & Hearsey, R. J. Phys (E): Sci. Instrum. 10, 51−56 (1977). | Article | ISI | ChemPort |
11.	Melcher, C. L. (in preparation).
12.	Sears, D. W. Icarus (in the press).
13.	Sears, D. W. Meteoritics 13, 628−632 (1978). | ChemPort |
14.	Huss, G. R., Keil, K. & Taylor, G. J. Geochim. cosmochim. Acta (in the press); Meteoritics 13, 495−497 (1978). | ChemPort |
15.	Wood, J. A. Icarus 6, 1−49 (1967). | Article | ISI | ChemPort |
16.	Garlick, G. F. J. Luminescent Materials (Clarendon, Oxford, 1970).
17.	Larimer, J. W. & Anders, E. Geochim. cosmochim. Acta 31, 1239−1270 (1967). | ISI | ChemPort |
18.	Laul, J. C., Ganapathy, R., Anders, E. & Morgan, J. W. Geochim. cosmochim. Acta 37, 329−357 (1967). | Article |
19.	Zähringer, J. Geochim. cosmochim. Acta 32, 209−237 (1968).
20.	Liener, A. & Geiss, J. in Thermoluminescence of Geological Materials (ed. McDougall, D. J.) (Academic, London, New York, 1968).
21.	Lalou, C., Nordemann, D. & Labyrie, J. C. r. hebd. Séanc. Acad. Sci., Paris D 270, 2104−2401 (1970).
22.	Vaz, J. E. & Sears, D. W. Meteoritics 12, 47−60 (1977). | ChemPort |
23.	Houtermans, F. G. & Liener, A. J. geophys. Res. 71, 3387−3396 (1965). | ISI |
24.	Heymann, D. Icarus 6, 189−221 (1967). | Article | ISI | ChemPort |
25.	Binns, R. A. Nature 213, 1111−1112 (1967). | ISI | ChemPort |
26.	Schultz, L. & Kruse, H. Nucl. Track Det. 2, 65−103 (1976). | Article |
27.	Moore, C. B. & Lewis, C. J. geophys. Res. 72, 6289−6292. | ChemPort |
28.	Schultz, L. & Signer, P. Earth planet. Sci. Lett. 36, 363−371 (1977). | Article | ISI | ChemPort |
29.	Hutchison, R. et al. Nature 287, 787−790 (1980). | Article | ISI | ChemPort |