Brandon Formation
Brandon Formation
Middle Jurassic, Bathonian
Basaltic sandstone and structurally imbricated cherty argillite overlying basal fragments of Permian chert and basalt. Basaltic sandstone contains Middle Jurassic radiolarians. Chert blocks at base contain Permian radiolarians. Chert and basalt blocks may be related to the Jasper Point Formation of the Moccasin Peak subterrane (unit CPJP).