MSc student Adam Wiest has published a new fieldwork article in Yukon Exploration & Geology!
The Late Triassic to Early Jurassic was a time of changing tectonics along the Cordilleran margin. In central Yukon, these changes are partially recorded by the lower and upper members of the Faro Peak formation, which crop out near the boundary between ancestral North America and the innermost Cordilleran terranes. In 2018, a two-year project was initiated to examine the Faro Peak formation, determine its physical stratigraphy, and further constrain the tectonic evolution of the Canadian Cordillera. Wiest et al. (2020) summarize the past season of fieldwork in the Faro area and provide two new stratigraphic sections to describe the age and regional significance of the lower member and the contac relationships between the lower and upper members. Wiest et al. (2020) provide evidence that these two members are unconformable, lithologically distinct, of mappable extent, and therefore should be separated into two new formations. Future detrital zircon U-Pb-Hf studies will be used to correlate stratigraphic units across the study area and determine their tectonic significance. This project is supported by the Geo-mapping for Energy and Minerals (GEM) program at Natural Resources Canada and the Yukon Geological Survey. |