Name derived from Serena Creek. Type locality designated as exposures in walls of Serena Creek, sec.10 T16N R14E, Soda Springs 7.5' quad [Placer Co, CA]. Reference section designated as east of Sierran crest at Ward Peak, secs.17-18 T16N R16E, Tahoe City 7.5' quad [Placer Co, CA]. Is part of Lake Tahoe sequence. Primarily composed of thin-bedded tan metachert. Is approximately 300 m thick at type locality. Conformably overlies Picayune Valley Formation (new); gradationally underlies Onion Creek Formation (new). Age provisionally assigned as Mississippian or younger based on stratigraphic relations and on occurrence of brachiopod(?) fragment found in lowermost part of overlying Onion Creek Formation.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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