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National Geologic Map Database

Geologic Unit: Silver Lake

Usage:

Silver Lake Member of Scranton Shale of Wabaunsee Group (IA*,KS*,MO*,NE*,OK*)
Silver Lake Shale Member of Scranton Formation of Wabaunsee Group (IA*,MO*)
Silver Lake Member of Scranton Shale of Ada Group (OK)
Silver Lake Shale Member of Scranton Shale of /Sacfox subgroup [informal] of Wabaunsee Group (KS)
Silver Lake Shale Member of Scranton Formation of /Sacfox subgroup [informal] of Wabaunsee Group (MO)

["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). Sacfox subgroup considered informal and should not be capitalized.]


Geologic age:

Late Pennsylvanian (Virgilian)*


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

Northeast of Silver Lake, Shawnee Co., eastern KS (Beede, 1898; Moore, 1936).


AAPG geologic province:

Chautauqua platform*
Forest City basin*


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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).