A rootless suture and the loss of the roots of a mountain chain: The Variscan belt of NW Iberia

作者：Martinez Catalan Jose R; Arenas Ricardo; Abati Jacobo; Sanchez Martinez Sonia; Diaz Garcia Florentino; Fernandez Suarez Javier; Gonzalez Cuadra Pablo; Castineiras Pedro; Gomez Barreiro Juan; Diez Montes Alejandro; Gonzalez Clavijo Emilio; Rubio Pascual Francisco J; Andonaegui Pilar; Jeffries Teresa E; Alcock James E; Diez Fernandez Ruben; Lopez Carmona Alicia

来源：Comptes Rendus Geoscience, 2009, 341(2-3): 114-126.

DOI：10.1016/j.crte.2008.11.004

• Oceanic suture
• Rheic Ocean
• Variscan evolution
• NW Iberia

Ophiolites of different Paleozoic ages occur in North-West (NW) Iberia in a rootless suture representing the remnants of the Rheic Ocean. Associated allochthonous terranes in the hanging- and foot-walls of the suture derive from the former margins, whereas the relative autochthon corresponds to the Paleozoic passive margin of northern Gondwana. The Paleozoic tectonic evolution of this part of the circum-Atlantic region is deduced from the stratigraphical, petrological, structural and metamorphic evolution of the different units and their ages. The tectonic reconstruction covers from Cambro-Ordovician continental rifting and the opening of the Rheic Ocean to its Middle to Upper Devonian closure. Then, the Variscan Laurussia-Gondwana convergence and collision is briefly described, from its onset to the late stages of collapse associated with the demise of the orogenic roots. To cite this article: J.R. Martinet Catalan et al., C. R. Geoscience 341 (2009).

• 出版日期2009-3