Terrane Unit : MT Name : Methow Description : Upper Triassic basalt overlain by Lower Jurassic arc clastics and volcanics and Jurassic and Cretaceous easterly derived clastic wedges shed from Quesnellia Assemblages : JL Ladner, JKR Relay Mountain, KS Skeena Plutonic Rocks : None Age Range: Lower Jurassic - Lower Cretaceous Maximum Age: 208.0 Ma Minimum Age: 97.0 Ma