2026-06-26T16:39:41Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/511742023-08-27T20:54:21Zcom_20.500.14352_14col_20.500.14352_15

Careón ophiolite, NW Spain: Suprasubduction zone setting for the youngest Rheic Ocean fl oor Sánchez Martínez, Sonia Arenas Martín, Ricardo Díaz García, Florentino Martínez Catalán, José Ramón Gómez Barreiro, Juan Pearce, Julian A. The Careón ophiolite (Galicia, NW Iberian Massif) shows lithological and geochemical features suggestive of an origin in a suprasubduction zone setting. As with other Devonian ophiolites in the European Variscan belt, it was generated within a contracting Rheic Ocean. This setting and the general absence of large Silurian-Devonian volcanic arcs on both of the Rheic Ocean margins strongly suggest that this ocean was closed by intraoceanic subduction directed to the north. This subduction removed the older normal (N) mid-oceanic-ridge basalt (MORB) oceanic lithosphere and gave rise to a limited volume of new suprasubduction zone oceanic lithosphere. The Careón ophiolite is a key element in understanding the evolution of the Rheic Ocean, which was the main oceanic domain that closed during the Paleozoic convergence of Gondwana and Laurussia, preceding the assembly of Pangea 2023-06-20T10:45:50Z 2023-06-20T10:45:50Z 2023-06-20T10:45:50Z 2007 journal article https://hdl.handle.net/20.500.14352/51174 0091-7613 10.1130/G23024A.1 eng open access Geological Society of America