Sequence 3
Sequence 3
Triassic to Mississippian
Includes the following units of Ross (1965, 1967), Dunne and others (1981), and Stone and others (1989, 2000, 2009): Triassic Union Wash Formation (marine sandstone, shale, and limestone); Early Triassic to Early Permian Owens Valley Group (lithologically diverse marine and nonmarine sedimentary rocks including conglomerate, sandstone, shale, and limestone) divided into the Conglomerate Mesa Formation, sedimentary rocks of Santa Rosa Flat, and Lone Pine Formation; Early Permian to Early Pennsylvanian Keeler Canyon Formation (limestone, calcareous siltstone and shale; Late Mississippian Rest Spring Shale (marine shale, probably deep-water); Mississippian Tin Mountain Limestone (thin- to medium-bedded fine-grained limestone with chert lenses and nodules); and Mississippian Perdido Group (sandstone, shale, and limestone, shallow to deep marine).