The Pattison Creek pluton - a mineralized Casino Intrusion made bigger with gamma rays
Description
Results from an airborne gamma ray and magnetics survey in the Dawson Range in west-central Yukon indicate that the Pattison Creek pluton may be larger than currently mapped. Ground follow-up indicates that the pluton is approximately three times larger than originally shown. This pluton is a member of the Casino Intrusions - a unit identified as being genetically associated with copper-molybdenum mineralization and as such is considered a good exploration target. Examination of the pluton indicates that it is a highly fractionated, epizonal stock composed primarily of granite and alkali feldspar granite with later phases of peraluminous muscovite-bearing alaskite and aplite. Microthermometric and isotopic data indicate that mineralizing hydrothermal fluids are of low salinity, and depleted in deuterium and delta Oxygen-18 relative to values typical of magmatic waters. The gamma-ray survey shows it to have among the highest U and Th values in the survey area (> 3.0 and 15 ppm respectively).
Resources
| Name |
Format |
Description |
Link |
| Yukon Geological Survey publication metadata |
HTML |
|
https://data.geology.gov.yk.ca/Reference/42734 |
| Original metadata (https://open.yukon.ca) |
HTML |
|
https://open.yukon.ca/information/05d076f0-2e5f-4752-a672-9e086bd8c74d |
| Report |
PDF |
|
https://ygsftp.gov.yk.ca/publications/yeg/yeg97/08_hart.pdf |