- Usage in publication:
-
- Felch formation*
- Modifications:
-
- Redescribed
- Revised
- AAPG geologic province:
-
- Lake Superior region
Summary:
Pg. 30 (table 1), 35. Felch formation, basal formation of Menominee group (reinstated) of Animikie series. Name Felch formation used in preference to lithologic term schist. In type locality, designated strata occur between Randville dolomite and Vulcan iron-formation; in Menominee district, term Felch formation is applied to distinctive sericitic slate-quartzite sequence which similarly lies above Randville dolomite and below the Vulcan iron-formation and which has been referred to as "Traders quartzite" and "Footwall slate." Age is considered middle Precambrian (Animikie Series). Report includes stratigraphic sequence chart.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1334).
- Usage in publication:
-
- Felch Formation*
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Lake Superior region
Summary:
Pg. 2845 (fig. 2, stratigraphic chart compiled from Leith and others, 1935; James, 1958; Gair and Thaden, 1968). Felch Formation of Menominee Group of Marquette Range Supergroup (new; replaces †Animikie series of James, 1958, south of Lake Superior, in Michigan and Wisconsin). Present in Menominee Range, northwestern Michigan. Underlies Vulcan Iron-Formation of Menominee Group; unconformably overlies Randville Dolomite of Chocolay Group. Age is middle Precambrian.
Source: Publication.
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 ([ ]).