Named from Roaring River, tributary of Cottonwood Creek, Shasta Co, CA, on which section is best exposed. Is tongue in Ono formation (new). Consists of four beds of massive cobble conglomerate, interbeds of massive sandstone with minor amounts of mudstone in lower part and graywacke with increasing amounts of mudstone toward upper part of unit. Thickness is 850 ft on Roaring River. No fossils have been found in tongue. Is Early Cretaceous age [based on stratigraphic relations].

Source: GNU records (USGS DDS-6; Menlo GNULEX).

Roaring River Tongue of Ono Formation (Murphy, 1956) is renamed Roaring River Member and assigned as 3rd from lowermost member (of 7) of Budden Canyon Formation (new). Unit mapped from North Fork of Cottonwood Creek to southern boundary of Ono 15' quad. Thickness along reference section on Roaring River is about 850 ft. Underlies Chickabally Mudstone Member; overlies Ogo Member (both new and of Budden Canyon Formation).

Source: GNU records (USGS DDS-6; Menlo GNULEX).

Type section on Roaring River (secs.29-30, 32 T30N R7W) Ono' 15 quad, Shasta Co, CA measures about 850 ft. Shown on geologic map of sections of Ono 15' quad. Described as lenticular and conglomerate units interbedded with mudstone; clasts chiefly porphyritic volcanic rocks and chert. Detailed lithologic description in text.

Source: GNU records (USGS DDS-6; Menlo GNULEX).