The upper Ordovician is well developed north of the Querigut granite massif in the French Pyrenees. Conglomerates, "perforated" schists, and dacitic rocks constitute the most typical facies. Caradocian deposits are also present, and are granitized in places. Pre-Caradocian formations are difficult to distinguish from upper Paleozoic deposits, but are known to occur. Gotlandian (Silurian), Devonian, and Dinantian (Carboniferous) deposits are also represented in the region.

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