geochemical anomaly

geochemical anomaly

[¦jē·ō¦kem·ə·kəl ə′näm·ə·lē]
(geochemistry)
Above-average concentration of a chemical element in a sample of rock, soil, vegetation, stream, or sediment; indicative of nearby mineral deposit.
References in periodicals archive ?
The soil geochemical anomaly surrounding this drill hole is of the size and magnitude to accommodate significant gold mineralization.
A large partial extraction surface soil geochemical anomaly with gold and pathfinder elements, approximately 2,400 feet long by 450 to 900 feet wide, is located in the eastern third and highest portion of the property.
Golouma West - Two drill holes, SAB06-01 and SAB06-02, were completed to test favourable excavator trench results across a 400-metre extent along the western portion of the extensive Golouma geochemical anomaly (currently measuring 1.
The purpose of the verification-sampling program is to confirm the approximate dimensions and tenor of the targeted soil geochemical anomaly, as determined by previously completed work described below, as a prelude to further exploration work.
This area is also coincident with a soil geochemical anomaly reported by Imperial Resources in 1985 (British Columbia Geological Survey ARIS Report 14103 - Imperial Resources) approximately 2,000m long by 150m to 400m wide with samples averaging greater than 250ppm Cu, greater than 100ppb Au and greater than 5ppm Mo.
The surveyed area coincided with the zone where previous surface sampling have returned a wide geochemical anomaly (28% of all samples have returned gold values greater than 0.
A moderate VLF anomaly is associated with the central 400 meter long section of the zone and this is coincident with a strong gold in soil (values over 400 ppb) geochemical anomaly.
This anomaly, the strongest yet defined at the Project, also is associated with a smaller coincident gold soil geochemical anomaly (Figure 2).
The program was conducted to follow-up a northwest-trending soil geochemical anomaly in copper and gold covering an area of 1.
P chargeability anomaly and copper-in-soil geochemical anomaly approximately 150 metres northwest of drill hole R04-14.
Exploration has discovered a coincident soil geochemical anomaly that averages greater than 325 ppb gold (up to 1,038 ppb gold) in a 500 meter by 600 meter area, which is within a greater than 200 ppm copper soil anomaly measuring 1,000 meters by 600 meters.
This strong, broad series of geochemical anomaly covers and extends well beyond the area of Oromin's initial three trenches and the area of artisanal excavations.