Mathematics – Logic
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985sci...230..436f&link_type=abstract
Science (ISSN 0036-8075), vol. 230, Oct. 25, 1985, p. 436-439. Research supported by the Geological Society of America.
Mathematics
Logic
36
Chondrites, Igneous Rocks, Meteorite Collisions, Neodymium Isotopes, Rare Earth Elements, Samarium Isotopes, Canada, Geological Surveys, Meteorites, Earth, Origin, Sudbury Complex, Ontario Canada, Crust, Melts, Neodymium, Isotopes, Samarium, Crystallization, Age, Evolution, Impacts, Abundance, Rare Earth Elements, Concentration, Comparisons, Formation
Scientific paper
Samarium-neodymium isotopic data on whole rocks and minerals of the Sudbury Complex in Canada gave an igneous crystallization age of 1840±21×106 years. The intial epsilon neodymium values for 15 whole rocks are similar to those for average upper continental crust, falling on the crustal trend of neodymium isotopic evolution as defined by shales. The rare earth element concentration patterns of Sudbury rocks are also similar to upper crustal averages. These data suggest that the Sudbury Complex formed from melts generated in the upper crust and are consistent with a meteoritic impact.
Basu Asis R.
Faggart B. E.
Tatsumoto Mitsonobu
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