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National Geologic Map Database

Geologic Unit: Hazel Green

Usage:

Hazel Green Member of Quimbys Mill Formation of Platteville Group (IL)
Hazel Green Bed of Quimbys Mill Member of Platteville Formation of Sinnipee Group (WI)


Geologic age:

Late Ordovician (Mohawkian; Turinian)


Type section, locality, area and/or origin of name:

Type section (=Quimbys Mill type section): small quarry at Quimby's Mill, near Etna, in SE/4 SE/4 sec. 11, T. 1 N., R. 1 E., [approx. Lat. 42 deg. 34 min. 00 sec. N., Long. 90 deg. 19 min. 52 sec. W., New Diggings 7.5-min quadrangle], Lafayette Co., southwestern WI (Templeton and Willman, 1963, Illinois Geol. Survey Bull., no. 89, p. 235; Willman and Buschbach, 1975, Illinois Geol. Survey Bull., no. 95, p. 47-87).
Named from Hazel Green, [in sec. 25, T. 1 N., R. 1 W., Cuba City 7.5-min quadrangle], Grant Co., southwestern WI, 6 mi southwest of type section (Templeton and Willman, 1963, p. 91; Willman and Buschbach, 1975).
Notable exposures in Dixon-Oregon area, northern IL (Templeton and Willman, 1952).


AAPG geologic province:

Wisconsin arch


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).