Stratigraphy of lower Cambrian and unconformable lower Carboniferous beds from the Valls unit (Catalonian coastal ranges)
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Stratigraphy of lower Cambrian and unconformable lower Carboniferous beds from the Valls unit (Catalonian coastal ranges)Data
2000Cita bibliográfica
Comptes rendus de l'Académie des Sciences, series IIA, Earth and Planetary Science, vol. 330, n. 2, pp. 147-153
Resumo
The Palaeozoic rocks outcropping around Valls are divided into two stratigraphic units. The boundary between both is an unconformity. The lower unit is composed by nearshore platform sediments and a Lower Cambrian age is indicated according to ichnotaxa content. The upper unit consists of pink nodular limestones and dark limestones, and it is followed by siliciclastic Culm Facies rocks. These limestones contain conodonts of the uppermost Tournaisian at its base (anchoralis-latus Zone) and lower Bashkirian (Namurian B) in the upper part. This condensed carbonate sequence was coeval with the thick siliciclastic Culm sedimentation in the surrounding areas.
Palabras chave
Conodonts
Trace-fossils
Lower Cambrian
Carboniferous
Catalonian Coastal Ranges
Trace-fossils
Lower Cambrian
Carboniferous
Catalonian Coastal Ranges
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ISSN
1251-329