Abstract
The discontinuity observed between the paleozoic outcrops of the Iberian Mountains and the ones of the Iberian Massif, has been the greatest incovenient to include those ones in a general Hercynian Iberian model. Two hypothesis have been proposed to the respect. One initial hypothesis postulates the inclusion of the Iberian Mountains paleozoic racks in the West Asturian-Leonese Zone (Lotze, 1961; Julivert et al., 1974). Other one postulates a double inelusion: the occidental part of the Iberian Chaines into the West Asturian-Leonese Zone and the oriental part of the Iberian Chaines into the Cantabrian Zona (Linan, 1983). In this work new geological data are provided for the geological conexion between Cantabrian Zone and the oriental part of the Iberian Chains; they can be summarised in three points. One of them is referred to the paralellism between the Narcea and Paracuellos antiforms. Those antiforms are divided by a tectonic accident, wich separates different Precambrian sequences. Another point deals with the close relation of the stratigraphical sequences of the Paleozoic racks between the Cantabrian region and Iberian region at both sides of the Narcea and Paracuellos antiforms. the last point refers to the study of small outcrops located in the northwest of the Iberian Chains, that show a probably more similar geological structure to the Cantabrian Zone wich was defined as a fold and thrust belt.
Highlights
Tbe discontinuity observed between the paleozoic outcrops of the Iberian Mountains and the ones of tbe Iberian Massif, has been the greatest incovenient to inelude those ones in a general Hercynian Iberian model
Another point deals with the c10se relation of the stratigraphical sequences of the Paleozoic racks between the Cantabrian region and Iberian region at both sides of the Narcea and Paracuellos antiforrns
Tbe last point refers to the study of small outcrops located in the northwest of the Iberian Chains, that show a probably more similar geological structure to the Cantabrian Zone wich was defined as a fold and thrust belt
Summary
Tbe discontinuity observed between the paleozoic outcrops of the Iberian Mountains and the ones of tbe Iberian Massif, has been the greatest incovenient to inelude those ones in a general Hercynian Iberian model. Finalmente en el trabajo de Liñán & Tejero (1988) sobre el Precámbrico de las Cadenas Ibéricas, se propone una variación en el trazado de la falla de Jarque, la cual en vez de unirse a la de Datos en el puerto del Frasno, va dividiendo el Precámbrico de Paracuellos y continúa diferenciada al sur de Codos, Badules y Lanzuela. Lotze (1929), las Cadenas Ibéricas quedarían en el momento actual divididas en tres grandes unidades hercínicas: Badules, Mesones y Herrera; limitadas por las fallas de Jarque y Datos, y cuya extensión en la parte sur no está bien conocida (figura 1).
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