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Origin of the Sudbury Complex by meteoritic impact: Neodymium isotopic evidence

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Abstract

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 initial 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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Origin of the Sudbury Complex by meteoritic impact: Neodymium isotopic evidence
Series title:
Science
Volume
230
Issue:
4724
Year Published:
1985
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
436
Last page:
439
Number of Pages:
4