| Title | VMS exploration: oxygen isotope mapping from top to bottom |
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| Author | Taylor, B E ;
Peter, J M; Laakso, K; Rivard, B |
| Source | Goldschmidt 2016 conference abstracts; 2016 p. 3094  Open
Access |
| Links | Online - En ligne
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| Image |  |
| Year | 2016 |
| Alt Series | Natural Resources Canada, Contribution Series 20200371 |
| Publisher | Geochemical Society |
| Publisher | European Association of Geochemistry |
| Meeting | Goldschmidt2016; Yokohama; JP; June 26-July 1, 2016 |
| Document | book |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf |
| Program | Targeted Geoscience Initiative (TGI-5) Volcanic and sedimentary systems - volcanogenic massive sulphide ore systems |
| Released | 2016 06 01 |
| Abstract | Oxygen isotope mapping to delineate paleo-submarine hydrothermal systems associated with volcanogenic massive sulfide (VMS) deposits is a robust technique for exploration. Early studies in Japan [1] and
California [2] documented some features of system tops and bottoms in weakly metamorphosed terranes. Subsequent studies have amplified and extended these findings to VMS deposits of many ages, and in various grades of metamorphism and tectonic
settings [3,4,5] supporting a general model [6]. For some hydrothermal systems, the size of the 'thermal footprint' (area of isotopic zoning) broadly correlates with tonnage of VMS mineralization [7]. Whereas high-temperature upflow zones along
synvolcanic faults provide vectors for exploration from the footwall [8], hanging wall indicators can be important, particularly in areas of cover. The Izok Lake deposit, Nunavut, Canada is a particularly good example where comparison of
lithogeochemical and field-based spectral IR mapping and oxygen isotope mapping clearly indicate the advantages of the isotopic method [3]. Comparisons to other deposit areas, including, Snow Lake [9], Flin Fon [10], Sturgeon Lake [5], and La Ronde
[11] indicate the importance of scale and volcanic history in interpretation and application. |
| Summary | (Plain Language Summary, not published)
Analysis of rock samples for stable oxygen isotopes permits the detection and delineation of paleo-hydrothermal systems which, in this case, are related
to buried massive sulphide deposits in volcanic terranes. |
| GEOSCAN ID | 327144 |
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