Silurian and/or Ordovician marine rocks, unit 2 (Bishop)

Sandstone, shale, conglomerate, chert, slate, quartzite, hornfels, marble, dolomite, phyllite; some greenstone
State California
Name Silurian and/or Ordovician marine rocks, unit 2 (Bishop)
Geologic age Late Cambrian(?) to Early Permian(?)
Lithologic constituents
Metamorphic > Metasedimentary > Metaclastic > Argillite
Metamorphic > Granoblastic > HornfelsIncludes calc-hornfels and siliceous hornfels
Sedimentary > Clastic > Sandstone (Bed)Primarily quartzose sandstone of Mt. Morrison Sandstone
Sedimentary > Chemical > Chert (Bed)Primarily black phosphatic chert of Squares Tunnel Fm.
Metamorphic > Metasedimentary > Metacarbonate > Marble
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Metamorphic > Metasedimentary > Metaclastic > Slate
Sedimentary > Clastic > Conglomerate (Bed)Thin conglomerate beds in Bright Dot Fm.
Comments Eastern Sierra Nevada. Structurally complex rocks of latest Cambrian(?) to Early Permian(?) age; originally mapped as Silurian to Ordovician. Composed primarily of argillite, hornfels, quartzose sandstone, chert, and marble
Stratigraphic units Buzztail Spring Fm., Hilton Creek Marble, Convict Lake Fm., Mount Aggie Fm., Mount Morrison Sandstone, Aspen Meadow Fm., Squares Tunnel Fm., Bright Dot Fm., Mt. Baldwin Marble

Jennings, C.W., Strand, R.G., Rogers, T.H., Boylan, R.T., Moar, R.R., and Switzer, R.A., 1977, Geologic Map of California: California Division of Mines and Geology, Geologic Data Map 2, scale 1:750,000.

Jennings, C.W., 1985, An explanatory text to accompany the 1:750,000 scale fault and geologic maps of California: California Division of Mines and Geology, Bulletin 201, 197 p.

Strand, R.G., 1967, Geologic map of California, Olaf P. Jenkins edition, Mariposa sheet, scale 1:250,000.

Stevens, C.H., and Greene, D.C., 1999, Stratigraphy, depositional history, and tectonic evolution of Paleozoic continental-margin rocks in roof pendants of the eastern Sierra Nevada, California: Geological Society of America Bulletin, v. 111, p. 919-933.

NGMDB product
Counties Mono