Dolton Member

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Lithostratigraphy: Dolton Member
Chronostratigraphy: Cenozoic Erathem >>Quaternary System >>Pleistocene Series


The Equality Formation has been redescribed. The redescription excludes the coarser grained Dolton Member (Willman and Frye 1970) as part of the Equality Formation. Instead, the stratified sand and gravel formerly classified as the Dolton Member is included in the Henry Formation as an informal facies to which the name "Dolton" is applied.


HANSEL, Ardith K. and W. Hilton JOHNSON, 1996, Wedron and Mason Groups: Lithostratigraphic Reclassification of Deposits of the Wisconsin Episode, Lake Michigan Lobe Area: Illinois State Geological Survey Bulletin 104, 116 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation