Journal article
Evidence from neodymium isotopes for mantle contributions to Phanerozoic crustal genesis in the Canadian Cordillera
Nature (London), Vol.337(6209), pp.705-709
02/23/1989
DOI: 10.1038/337705a0
Abstract
Sm-Nd and Rb-Sr isotope data are presented for clastic, mafic, intermediate and felsic rocks from the Alexander and Stikine terrains. The results for these terrains, two of the largest in the Canadian Cordilleran Phanerozoic orogenic belt, show that these tectonic fragments are composed of mantle-derived continental crust. This is in contrast to other isotopic studies of Phanerozoic orogenic belts which show that much of the crust is composed of reworked, preexisting continental crust. The style and rate of accretion of the Alexander and Stikine terrains appear to be similar to those of some Proterozoic crustal regions.
Details
- Title: Subtitle
- Evidence from neodymium isotopes for mantle contributions to Phanerozoic crustal genesis in the Canadian Cordillera
- Creators
- Scott D Samson - University of ArizonaWilliam C McClelland - University of ArizonaP. Jonathan Patchett - University of ArizonaGeorge E Gehrels - University of ArizonaRobert G Anderson - Geological Survey of Canada
- Resource Type
- Journal article
- Publication Details
- Nature (London), Vol.337(6209), pp.705-709
- Publisher
- Macmillan Journals
- DOI
- 10.1038/337705a0
- ISSN
- 0028-0836
- eISSN
- 1476-4687
- Language
- English
- Date published
- 02/23/1989
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229299502771
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