Short Paper: Cadomian terrane tectonic
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- journal_title：Journal of the Geological Society
- Contributor：ROBIN A. STRACHAN ; PETER J. TRELOAR ; MICHAEL BROWN ; RICHARD S. D’LEMOS
- Publisher：Geological Society of London
- Date：1989-
- Format：text/html
- Language：en
- Identifier：10.1144/gsjgs.146.3.0423
- journal_abbrev：Journal of the Geological Society
- issn：0016-7649
- volume：146
- issue：3
- firstpage：423
- section：Article
摘要
The North Armorican composite terrane, NW France, is a collage of displaced terranes which result from the amalgamation of Cadomian continental arcs and marginal basin complexes by sinistral transpression along a continental margin above a subduction zone. Early Cadomian arc activity occurred at c. 700-650 Ma, but terrane accretion did not occur until c. 540 Ma, and post-tectonic magmatism persisted well into the Palaeozoic. Cadomian events thus span a considerably greater period than previously supposed.