The Hercynian structure of the Catalonian Coastal Ranges (NE Spain)

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Authors:Julivert, M.; Duran, H.
Author Affiliations:Primary:
Univ. Autonoma Barcelona, Dep. Geol., Barcelona, Spain
Volume Title:geology of the Hercynian basement in the Catalonian Coastal Ranges (NE Spain)
Volume Authors:Julivert, M., editor; Zamarreno, I.
Source:The geology of the Hercynian basement in the Catalonian Coastal Ranges (NE Spain), edited by M. Julivert and I. Zamarreno. Acta Geológica Hispánica, 25(1-2), p.13-21. Publisher: Instituto Nacional de Geología, Barcelona, Spain. ISSN: 0567-7505
Publication Date:1990
Note:In English with Spanish summary. 22 refs.; illus. incl. sect., geol. sketch maps
Summary:In the Catalonian coastal ranges Palaeozoic sedimentary and metasedimentary rocks crop out in several areas, intruded by late tectonic Hercynian granitic rocks and separated by Mesozoic and Tertiary cover sediments. Large structures are often difficult to recognize, though a general E-W trend can be seen on the map. Deformation was accompanied by the development of cleavages and regional metamorphism. Greenschist- facies rocks are widespread with amphibolite facies locally. In low-grade areas the main deformation phase generated S-facing folds with an axial plane cleavage. The intersection lineation and the axes of minor folds trend E-W as do all mappable structures. In medium- to high-grade areas no major folds have been observed; here the main foliation is a schistosity and is often folded. The late Hercynian deformation events, which produced small-scale structures, also gave rise to large open folds which fold the slaty cleavage and schistosity. As a result, alternating belts with opposite dip to the main foliation were formed. The Palaeozoic outcrops of the Catalonian coastal ranges are located within the N branch of the Ibero-Armorican arc, and have a relatively frontal position within the belt. The Carboniferous of the Priorat-Prades area, together with other outcrops in the Castellon province, the Montalban massif and the Cantabrian zone probably form part of an area of foreland Carboniferous deposition at the core of the arc. [This, and the papers represented by five additional abstracts, form part of a Special Issue on The Geology of the Hercynian Basement in the Catalonian Coastal Ranges (NE Spain).] [R.E.S.]
Subjects:Foliation; Orogeny; Paleozoic; Slaty cleavage; Tectonics; Variscan Orogeny; Catalonian Coastal Ranges; Europe; Iberian Peninsula; Southern Europe; Spain; Northeastern Spain
Abstract Numbers:92M/0914
Record ID:1993007752
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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