1900-Ma ocean crust in Canada
Article first published online: 3 JUN 2011
©1987. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 68, Issue 52, page 1810, 29 December 1987
How to Cite
1987), 1900-Ma ocean crust in Canada, Eos Trans. AGU, 68(52), 1810–1810, doi:10.1029/EO068i052p01810-02.(
- Issue published online: 3 JUN 2011
- Article first published online: 3 JUN 2011
- Cited By
The oldest known occurrence in North America of an ophiolite, considered to be a piece of ancient ocean crust, has been reported in the Cape Smith Belt in northern Quebec, Canada.
The recognition last summer of a key structural component of the characteristic ophiolite suite has buttressed confidence in the theory that the 1900-Ma fragments of an ocean basin were accreted to an early Proterozoic Canadian continent. The tectonic mixing of oceanic and continental crust is strong evidence for the operation of plate tectonics early in Earth's history.