Metamorphism of Sedimentary Rocks by Syenitic Intrusions in the Tombstone Range 116 A/4, Yukon Territory
Description
Sedimentary and volcanic rocks ranging in age from Precambrian to Lower Cretaceous underlie the Tombstone area (116 A/4). The conditions of metamorphism of the sedimentary sequence underlying the study area are reflected by the stability field of the univariant assemblage tremolite-calcite-quartz-diopside. Assuming a pressure of 2 kb, the temperature of metamorphism lies between 475° and 525° C.
The mineralogical zoning displayed in the host rocks away from the syenite is interpreted as being essentially the consequence of a decreasing amount of dolomite in the original sediments.
Resources
| Name |
Format |
Description |
Link |
| Yukon Geological Survey publication metadata |
HTML |
|
https://data.geology.gov.yk.ca/Reference/42621 |
| Original metadata (https://open.yukon.ca) |
HTML |
|
https://open.yukon.ca/information/18bd158c-4f1f-498e-81d4-9e2b600ca877 |
| Report |
PDF |
|
https://ygsftp.gov.yk.ca/publications/yeg/yeg81.pdf |