Historical:Gulfian Series

	Handbook of Illinois Stratigraphy
Series	Bulletin 95
Author	H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date	1975
Link	Web page
PDF	PDF file
Store	ISGS Store

	Handbook of Illinois Stratigraphy
Series	Bulletin 95
Author	H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date	1975
Link	Web page
PDF	PDF file
Store	ISGS Store

Lithostratigraphy: Embayment Megagroup
Chronostratigraphy: Mesozoic Erathem >>Cretaceous System >>Gulfian Series

Authors

H. B. Willman and John C. Frye

Name Origin

The Gulfian Series (Hill, 1887, p. 298, 300) is named for its occurrence along the Coastal Plain of the Gulf of Mexico, and is presumed to include all Cretaceous rocks in Illinois.

Description

In southern Illinois most of the Cretaceous rocks were deposited during the youngest part of the Gulfian, although the basal Tuscaloosa Formation may represent early deposits of the series. Cretaceous rocks in western Illinois were probably deposited during early Gulfian time.

References

HILL, R. T., 1887, Topography and geology of the Cross Timbers and surrounding regions in northern Texas: American Journal of Science, v. 33, p. 291-303.

ISGS Codes

Stratigraphic Code	Geo Unit Designation
1370	--