Diorite member
Diorite member
Early Jurassic and Late Triassic, ~193-209 Ma
Hornblende-epidote-biotite-chlorite tonalite and diorite. Rocks from this unit have yielded zircon U-Pb ages of ~202-207 Ma (Saleeby and others, 1989b; Edelman and others, 1989; Day and Bickford, 2004).