Terrane Unit : WM Name : Windy-McKinley Description : Mixed assemblage of Devonian to lower Mesozoic oceanic rocks and undated clastics like those of the Jurassic-Cretaceous Gambier Assemblage. Amalgamated by latest Triassic time and accreted to Ancestral North America in the Jurassic Assemblages : DKWR White River Plutonic Rocks : None Age Range: Devonian - Cretaceous Maximum Age: 408.5 Ma Minimum Age: 112.0 Ma