The addition of a fragment of crust, or terrane, geologically distinct from the continent it collides with, welded onto a continental margin as an intervening ocean basin closes through subduction. Much of the western margin of North America is built from a patchwork of terranes accreted over hundreds of millions of years.
Facts
Process Type Sources
1. Terrane - Wikipedia
Overview sectionQuote, Overview section
The concept of tectonostratigraphic terrane developed from studies in the 1970s of the complicated Pacific Cordilleran orogenic margin of North America
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