ammonites
Moccasin Formation, US Route 19 (red mudrock zone) (Ordovician of the United States)

Where: Tazewell County, Virginia (37.0° N, 81.0° W: paleocoordinates 30.0° S, 61.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Moccasin Formation, Caradocian (460.9 - 449.5 Ma)

• Turinian

• formation-level stratigraphic resolution

Environment/lithology: gray, red, calcareous mudstone and gray, calcareous limestone

• 250 to 400 feet of maroon-drab, brick-red, buff-gray, and olive-drab mudrock and siltstone, waxy red shale and metabentonite, bluish-gray calcilutyte, and drab-gray argillaceous limestone. Most of the beds are calcareous. Most of the mudrocks are mud-cracked, and lenses of sliver breccia formed by slight reworking of desiccated sediment occur.

Size class: macrofossils

Primary reference: B. N. Cooper and C. E. Prouty. 1943. Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia. Bulletin of the Geological Society of America 54:819-886 [S. Holland/T. Hanson/T. Hanson] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34335: authorized by Steven Holland, entered by Tori Hanson on 27.08.2003