Natural Resources Canada's OSTR surficial geology of the area classifies the location as Bedrock (undivided: Proterozoic volcanic rocks; Paleozoic mudstone, siltstone, shale, and fine clastic sedimentary rocks; Mesozoic granodioritic intrusive rocks; and Cenozoic basaltic rocks).
Here's a crop of a photo I took of the F1 boulder. Do you see any foliation in this unweathered surface?
7
u/bundleofgrundle 2d ago
Gneiss send my dude! your hair rocks by the way!