cuivre des séries gréseuses rouges continentales

OBS: [...] pour beaucoup de dépôts métallifères à dominante stratiforme, un rapport de causalité direct entre le dépôt des métaux et celui de leur enveloppe sédimentaire est contesté. II s'agit, par exemple, de l'uranium et du cuivre dans les séries gréseuses rouges continentales (Red beds) [...]

CONT: Sandstone-uranium-vanadium-base metal deposits. - These deposits are found in terrestrial sediments, frequently fluviatile, which were generally laid down under arid conditions. As a result, the host rocks are often red in colour and for this reason copper deposits of this type are commonly referred to as ""red bed coppers.""
CONT: Conformable deposits of copper occur in some sandstones which were laid down under desert conditions. As these rocks are frequently red, the deposits are known as red bed coppers.