A case study of soil gases as an exploration guide in glaciated terrain: Crandon massive sulfide deposit, Wisconsin
Economic Geology
By: J. Howard McCarthy, R. N. Lambe, and John A. Dietrich
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Abstract
The Crandon massive sulfide deposit is covered by as much as 65 m of glacial drift. Soil gas was sampled at a depth of 0.5 m along several traverses over the deposit. Gases showing anomalies that correlate with the underlying deposit include CO 2 , CH 4 , and O 2 . CO 2 and CH 4 show positive anomalies with a background/anomaly ratio as high as 1 to 25, whereas O 2 shows negative anomalies. Oxidation of the sulfides with the production of sulfate is the probable chemical reaction producing some of the gas anomalies. The CH 4 anomalies may result from thermal cracking of hydrocarbon precursors. These results indicate that measurement of soil gases should provide a useful exploration tool in glacial terrain.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A case study of soil gases as an exploration guide in glaciated terrain: Crandon massive sulfide deposit, Wisconsin |
| Series title | Economic Geology |
| DOI | 10.2113/gsecongeo.81.2.408 |
| Volume | 81 |
| Issue | 2 |
| Year Published | 1986 |
| Language | English |
| Publisher | Society of Economic Geologists |
| Description | 13 p. |
| First page | 408 |
| Last page | 420 |
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