Implicaciones de la zona Ossa-Morena y dominios equivalentes en el modelo geodinámico de la Cadena Hercinica europea
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Abstract
La zona Ossa-Morena (ZOM) del hercínico peninsular posee unas características peculiares
que la diferencian netamente de los otros dominios internos de la Cadena. Se trata
de un dominio cortical (microcontinente ?) adosado a la corteza de la Zona Centro-Ibérica
(ZCI) desde el Paleozoico Inferior. Durante la colisión continental hercínica (Palezoico
Superior) la ZOM responde de diferente forma que las zonas adyacentes (ZCI) debido a
su diferente constitución (menor espesor) y peculiar evolución prehercínica (rifting ordovícico).
Esta zona y sus equivalentes en otros dominios del hercínico peninsular y europeo,
tienen fuertes implicaciones en el desarrollo del orógeno hercínico. Parte de la corteza
continental de la ZOM fue, junto con la corteza oceánica desarrollada localmente en su
interior durante el rifting ordovícido, obducida sobre los dominios internos (ZCI) en zonas
de colisión frontal (e.g. NW peninsular y Macizo Céntral Francés) y fuertemente estirada
en zonas de colisión oblicua (e.g. ZOM del SW peninsular y dominios norarmoricanos.
The Ossa-Morena zone (OMZ) has sorne peculiar features clearly different from those of the other inner domains in the Iberic Hercynian chain. It is a continental domain (microcontinent ?) attached, from Lower Paleozoic times, to the continental crust of the Central Iberian zone (CIZ). During the Hercynian collision (Upper Paleozoic) the OMZ behaved in a way different form that of adjacent areas (CIZ) due to the peculiar features (Iess thicknees) and pre-Hercynian evolution (Ordovician rifting). The OMZ, and their equivalent domains in the Iberian peninsula as well as in European chain, can have strong implications on the evolution of the Hercynian orogene. Part of the OMZ crust (and equivalent domains), together with the oceanic crust developed within it during the Ordovician rifting, was obduced over the inner domains (CIZ) in areas of frontal collision (e.g. NW Iberian peninsula and French Massif Central) and strongly stretched in areas of oblique collision (e.g. OMZ of SW Iberian peninsula and North Armorican domains).
The Ossa-Morena zone (OMZ) has sorne peculiar features clearly different from those of the other inner domains in the Iberic Hercynian chain. It is a continental domain (microcontinent ?) attached, from Lower Paleozoic times, to the continental crust of the Central Iberian zone (CIZ). During the Hercynian collision (Upper Paleozoic) the OMZ behaved in a way different form that of adjacent areas (CIZ) due to the peculiar features (Iess thicknees) and pre-Hercynian evolution (Ordovician rifting). The OMZ, and their equivalent domains in the Iberian peninsula as well as in European chain, can have strong implications on the evolution of the Hercynian orogene. Part of the OMZ crust (and equivalent domains), together with the oceanic crust developed within it during the Ordovician rifting, was obduced over the inner domains (CIZ) in areas of frontal collision (e.g. NW Iberian peninsula and French Massif Central) and strongly stretched in areas of oblique collision (e.g. OMZ of SW Iberian peninsula and North Armorican domains).
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Bibliographic citation
Antonio Castro Dorado. Implicaciones de la zona Ossa-Morena y dominios equivalentes en el modelo geodinámico de la Cadena Hercinica europea. Estudios geológicos, ISSN 0367-0449, Vol. 43, Nº 3-4, 1987, págs. 249-260.











