RT Journal Article
T1 Careón ophiolite, NW Spain: Suprasubduction zone settingfor the youngest Rheic Ocean fl oor
A1 Sánchez Martínez, Sonia
A1 Arenas Martín, Ricardo
A1 Díaz García, Florentino
A1 Martínez Catalán, José Ramón
A1 Gómez Barreiro, Juan
A1 Pearce, Julian A.
AB The Careón ophiolite (Galicia, NW Iberian Massif) shows lithological and geochemicalfeatures suggestive of an origin in a suprasubduction zone setting. As with other Devonianophiolites 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 theRheic Ocean margins strongly suggest that this ocean was closed by intraoceanic subductiondirected 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 zoneoceanic lithosphere. The Careón ophiolite is a key element in understanding the evolution ofthe Rheic Ocean, which was the main oceanic domain that closed during the Paleozoic convergenceof Gondwana and Laurussia, preceding the assembly of Pangea
PB Geological Society of America
SN 0091-7613
YR 2007
FD 2007
LK https://hdl.handle.net/20.500.14352/51174
UL https://hdl.handle.net/20.500.14352/51174
LA eng
DS Docta Complutense
RD 3 oct 2024