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Title

Prospección geoquímica en las redes de drenaje de los materiales cambro-ordovícicos del Macizo del Montseny-Guilleries (Noreste de España)

AuthorsFont, X.; Gimeno, D.; Viladevall, M.; Fernandez-Turiel, J. L.
Keywordsstream sediment
geochemical exploration
Montseny
Guilleries
Issue Date1988
PublisherUniversidade de Aveiro
CitationGeociencias, Aveiro (Portugal), 3 (1-2): 359-370
AbstractCatalonian Coastal Ranges (Northeast Spain) are a fragment of the Hercynian orogen in Europe placed south to the Pyrennes along the Mediterranean coast; early Palaeozoic materials crop out mainly in the Northern sector, in the Montseny-Guilleries massif, near Girona city. These materials (locally called 'Cambro-Ordovician") are composed of a thick serie of siliciclastic rocks, with important gneiss intercalations, and minor presence of carbonic rocks, amphibolites, and stratiform polimetallic sulphide ores. A geochemical stream sediment survey was developed over these materials, in the context of a regional miultielemental geochemical survey covering all the Palaeozoic materials in Northern Catalonian Coastal Ranges. Geochemical data were studied by uni-, bi- and multivariate statistical procedures, and afterwards mapped and interpreted. Secondary geochemical anomalies show a clustered pattern over most of the Cambro-Ordovician materials, in c!ear correspondence to stratiform ores. Vein-type post-Hercynian are well represented by highly manifested secondary anomalies oi local distribution. A comparison between total and sectorial results obtained after statistical producers ls made in order to obtain criteria of ore-prospecting interpretation.
URIhttp://hdl.handle.net/10261/216761
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