Colluvial

Définitions de « colluvial »

Colluvial - Adjectif

• (Géologie, Pédologie) Qualifie ce qui est relatif aux colluvions ou constitué de celles-ci.

  Certains brunisols colluviaux présentent une structuration particulièrement favorable et sont, de ce fait, plus fertiles que les sols environnants non colluviaux (Vosges).

Étymologie de « colluvial »

Évolution historique de l’usage du mot « colluvial » depuis 1800

Citations contenant le mot « colluvial »

• En 2010, le géomorphologue avait adressé une lettre au ministère des Infrastructures publiques avec copie au ministre d'alors. Cette correspondance faisait état de colluvial soil, un phénomène qui surgit sur des domaines de cendres volcaniques.

• L'altération des sulfures et l'érosion substantielle des veines de quartz auraient libéré de l'or et des matériaux qui ont conduit à la formation d'un épais manteau colluvial sur les côtés et le fond de la vallée de la rivière Gilbert.

• A detailed surficial geology study over the core claims comprising the Project was undertaken by Dr. Derek Turner, M.Sc., Ph.D., P.Geo. (B.C.) on behalf of the Company and has revealed that the soil anomaly strongly correlates with colluvial surficial material, indicating that the anomaly is likely derived from underlaying bedrock with little mechanical or gravitational dispersion. Immediately west of the anomaly, till veneers ( 1 m depth) likely mask potential indications of bedrock mineralization.

• In mid-May 2023, the Halcones technical team commissioned a colluvial study to follow-up on the drilling results from earlier in 2023 at the Northwest zone. The study comprised 50 samples over a 100m x 100m grid pattern (Figure 1). The samples were analyzed at ALS Laboratory in Copiapo, Chile. The results summarized in Figure 1 highlight a distinct geochemical anomaly comprising elements that are typical pathfinder elements related to gold deposits in the region, between hole CAR23-012 and CAR23-007. For reference, typical regional background levels of As+Sb+Pb are in the range of 40-45 ppm.

• Management says an area of surficial quartz and pegmatite float material in alluvial and colluvial sediments that is 9km-wide and 14km long is associated with the Carr Boyd monzogranite. Magnetics and historic drilling within the area show it to be underlain by the Carr Boyd mafic intrusion and that pegmatites have developed within it.

• Since the completion of the previous drill campaign in March of 2023, the Halcones exploration team and contractors have completed 180 colluvial sediment samples over a 100m x 100m grid over the two priority target areas (Figure 2). Additionally, 16-line km of induced polarization (“IP”) geophysical surveying was completed over the two target areas.

Traductions du mot « colluvial »

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