Serpentinite-matrix mélange member
Serpentinite-matrix mélange member
Early Jurassic(?) and Late Triassic
Serpentinite-matrix mélange with blocks of chert, argillite, basalt, diabase, and gabbro with lesser amphibolite and mica schist. Chert blocks have yielded radiolarians of Early Jurassic(?) to Late Triassic (Sinemurian(?) to Norian) and Late Triassic (Norian) age.