Pg. 22, 85. Hanover limestone of Carbondale group. In type area, irregularly laminated light-gray fairly pure limestone with knobby upper surface; overlies soft dark-gray shale. In Knox County, Illinois, thinner than in type area and quite glauconitic and sandy with scattered pebbles of dark-gray phosphatic limestone. Age is Pennsylvanian.
Type locality: in NE/4 SW/4 sec. 27, T. 10 N., R. 11 W., Greene Co., IL.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1666).
Pg. 101, 190, 195, 196, 204. Hanover limestone of Carbondale group. Most persistent near Pleasantview, Beardstown quadrangle, Illinois, where limestone is conglomerate with dark-blue-gray limestone masses in matrix of light-gray limestone. Commonly massive, but in thickest exposures shows rude bedding. Thickness 1 to 4 feet near Pleasantview but 6 inches or less elsewhere. In most exposures, unconformably underlies St. David underclay and underclay limestone. Included in Summum cyclothem. Age is Pennsylvanian. Name credited to J.R. Pelt (1928, Illinois Geol. Survey field notes).
Source: US geologic names lexicon (USGS Bull. 1200, p. 1666).
Pg. 34, 35, 47 (table 1), 66, pl. 1. Hanover limestone member of Carbondale formation. Rank reduced to member status in Carbondale formation. Occurs above Summum (No. 4) coal member and below Harrisburg (No. 5) coal member. Thickness 10 feet. Age is Pennsylvanian. Presentation of new rock-stratigraphic classification of Pennsylvanian strata in Illinois.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1666).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).