The Cid Formation is a metavolcanic rock and mudstone geologic formation in North Carolina. It consists of a lower unnamed mudstone member with intermittent volcanic flows and the Flat Swamp Member, which is characterized by pyroclastic flows.[1] It preserves fossils dating back to the Ediacaran period.

Cid Formation
Stratigraphic range: Ediacaran
TypeFormation
Unit ofAlbemarle Group
Sub-unitsFlat Swamp member, mudstone member
Lithology
Primarymetavolcanic rock, shale, argillite
Othermudstone
Location
Region North Carolina
Country United States
Type section
Named forCid, NC

See also

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References

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  1. ^ Stromquist, Arvid A.; Sundelius, Harold W. (1968). "Stratigraphy of the Albemarle Group of the Carolina slate belt in central North Carolina" (PDF). Contributions to stratigraphy: US Geological Survey Bulletin. 1274-B: 5–19.