Evidence from neodymium isotopes for mantle contributions to Phanerozoic crustal genesis in the Canadian Cordillera

Scott D. Samson, William C. McClelland, P. Jonathan Patchett, George E. Gehrels, Robert G. Anderson

Research output: Contribution to journalArticle

151 Scopus citations

Abstract

Sm-Nd and Rb-Sr isotopic studies of several Phanerozoic orogenic belts have shown that much of the crust in these belts is composed of reworked, pre-existing continental crust. In contrast, isotopic data collected from two of the largest terranes in the Canadian Cordilleran orogenic belt, the Alexander and Stikine terranes, show that these tectonic fragments are composed of mantle-derived continental crust. In many respects the style and rate of crustal accretion of these and related terranes appear similar to those of some Proterozoic crustal regions

Original languageEnglish (US)
Pages (from-to)705-709
Number of pages5
JournalNature
Volume337
Issue number6209
DOIs
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • General

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