Ordinary chondrites - Multivariate statistical analysis of trace element contents

Details Ordinary chondrites - Multivariate statistical analysis of trace element contents Ordinary chondrites - Multivariate statistical analysis of trace element contents

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55...19l&link_type=abstract

(Workshop on Differences between Antarctic and non-Antarctic Meteorites, Vienna, Austria, July 27, 28, 1989) Geochimica et Cosmo

Statistics

9

Antarctic Regions, Chondrites, Discriminant Analysis (Statistics), Meteoritic Composition, Trace Elements, Data Bases, Regression Analysis, Weathering, Meteorites, Ordinary Chondrites, Chondrites, Statistical Methods, Analysis, Trace Elements, Composition, Trace Elements, L3 Chondrites, L4 Chondrites, H4 Chondrites, H5 Chondrites, H6 Chondrites, L Chondrites, H Chondrites, Shock Effects, Parent Material, Thermal History, Procedure, Classification, Laboratory Studies, Samples, Meteorite, Weathering, Catalog,

Scientific paper

The contents of mobile trace elements (Co, Au, Sb, Ga, Se, Rb, Cs, Te, Bi, Ag, In, Tl, Zn, and Cd) in Antarctic and non-Antarctic populations of H4-6 and L4-6 chondrites, were compared using standard multivariate discriminant functions borrowed from linear discriminant analysis and logistic regression. A nonstandard randomization-simulation method was developed, making it possible to carry out probability assignments on a distribution-free basis. Compositional differences were found both between the Antarctic and non-Antarctic H4-6 chondrite populations and between two L4-6 chondrite populations. It is shown that, for various types of meteorites (in particular, for the H4-6 chondrites), the Antarctic/non-Antarctic compositional difference is due to preterrestrial differences in the genesis of their parent materials.

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