Morrow Group

Morrow Group
Morrow Group
Stratigraphic range: Pennsylvanian
Type	Group
Sub-units	Bloyd Formation, Hale Formation
Underlies	Atoka Formation
Overlies	Pitkin Formation
Location
Region	Arkansas
Country	United States
Type section
Named for	Morrow, Washington County, Arkansas
Named by	George Irving Adams and Edward Oscar Ulrich

Last updated June 04, 2025

The Morrow Group was a geologic group in Arkansas that is now abandoned and replaced by the Bloyd Formation and the Hale Formation. It preserves fossils dating back to the Pennsylvanian period.

References

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.

References

↑ Adams, G.I.; Ulrich, E.O. (1904). "Zinc and lead deposits of northern Arkansas" (PDF). U.S. Geological Survey Professional Paper. 24 (7): 28, 109–113. Bibcode:1904JG.....12..663.. doi: 10.1086/621186 . Retrieved 20 February 2018.

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[1] Adams, G.I.; Ulrich, E.O. (1904). "Zinc and lead deposits of northern Arkansas" (PDF). U.S. Geological Survey Professional Paper. 24 (7): 28, 109–113. Bibcode:1904JG.....12..663.. doi: 10.1086/621186 . Retrieved 20 February 2018.

[1]

Morrow Group

Contents

See also

References

References