TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

The subeconomic Dorchester deposit in New Brunswick evidently has a higher grade linear or curvilinear zone in contact with barren pyrite near an oxidation-reduction "front" and a lower grade zone away from the "front." Although incompletely documented, this morphology is similar to that of uranium roll-front deposits.  3, fiche 1, Anglais, - roll%2Dfront%20uranium%20deposit

Record number: 1, Textual support number: 1 OBS

The resulting sedimentary rocks are most important as hosts for uranium deposits, which are generally termed Colorado Plateau type after their best known occurrences, where they are also known as roll-front type after their form and mode of deposition.  1, fiche 1, Anglais, - roll%2Dfront%20uranium%20deposit

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Genèse des gisements d’uranium de type roll-front […] Les concentrations de type roll-front constituent le type majeur de gisement d’uranium en contexte sédimentaire et repré­sentent une part très importante des réserves mondiales à bas coût.  1, fiche 1, Français, - gisement%20d%26rsquo%3Buranium%20de%20type%20roll%2Dfront

Record number: 1, Textual support number: 1 OBS

Au Sud Texas, le gisement uranifère de Panna Maria, de type «roll», se serait formé selon ces processus biogéniques [...]  3, fiche 1, Français, - gisement%20d%26rsquo%3Buranium%20de%20type%20roll%2Dfront

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 OBS

roll orebody: A uranium and/or vanadium orebody in a sandstone lens or layer, which cuts across bedding in sharply curving forms, commonly C-shaped or S-shaped in cross section. Two types can be distinguished: the Colorado Plateau type, named in 1956, and the Wyoming type, named in 1962.  2, fiche 2, Anglais, - roll%2Dtype%20deposit

Record number: 2, Textual support number: 2 OBS

The "roll-front-type deposit" refers to the Wyoming type of uranium deposit.  1, fiche 2, Anglais, - roll%2Dtype%20deposit

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

Gisement uranifère de type roll.  1, fiche 2, Français, - gisement%20de%20type%20roll

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

A roll orebody of the Wyoming type, which is bounded on the concave side by oxidized altered rock typically containing hematite or limonite, and on the convex side by relatively reduced altered rock typically containing pyrite and organic matter.  4, fiche 3, Anglais, - roll%2Dfront%20deposit

Record number: 3, Textual support number: 1 CONT

roll-type uranium ore: C-shaped deposit, most commonly in sandstones, formed by advancing mineralizing fluids. Deposition takes place where groundwaters encounter reducing conditions ...  3, fiche 3, Anglais, - roll%2Dfront%20deposit

Record number: 3, Textual support number: 1 OBS

Sandstone-uranium-vanadium-base metal deposits. - These deposits are found in terrestrial sediments ... Uranium-rich examples are called Colorado Plateau-type, carnotite-type, sandstone-type, Wyoming roll-front-type ... In deposits of this type one or two metals are present in economic amounts, whilst the others may be present in minor or trace quantities.  5, fiche 3, Anglais, - roll%2Dfront%20deposit

Record number: 3, Textual support number: 2 OBS

Within carbonatites, deposits are often crescentic or rounded in form, reflecting the distribution of host intrusive phases. ... The deposits of this class are commonly groups of lenses or ore shoots of crescentic or annular form showing steep dips related to crystallization parallel to the walls of the intrusive complex, and are notable for great vertical continuity of the ore.  6, fiche 3, Anglais, - roll%2Dfront%20deposit

Record number: 3, Textual support number: 3 OBS

Orebodies of the Wyoming type are crescent-shaped in cross section and typically form in relatively thick, tabular, or elongate sandstone bodies, with the tips of the crescent thinning and becoming tangent to mudstone layers above and below.  4, fiche 3, Anglais, - roll%2Dfront%20deposit

Record number: 3, Textual support number: 1 PHR

Roll-front uranium deposit.  7, fiche 3, Anglais, - roll%2Dfront%20deposit

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Au Sud Texas, le gisement uranifère de Panna Maria, de type «roll», se serait formé selon ces processus biogéniques [...]  2, fiche 3, Français, - gisement%20de%20type%20front%20de%20roll

Record number: 3, Textual support number: 1 OBS

Sous-type rolls [...]. - Il est bien représenté au Wyoming. [...] Une des principales caractéristiques du sous-type est le caractère sécant de la minéralisation sur la roche-hôte, les gisements ayant une forme de croissant.  2, fiche 3, Français, - gisement%20de%20type%20front%20de%20roll

Fiche 3,  Justifications,  Espagnol