- Usage in publication:
-
- Yakinikak limestone*
- Modifications:
-
- Original reference
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- North Western Overthrust
Summary:
Pg. 316, 324. Yakinikak limestone. Light-gray to dark gray-blue crystalline limestone speckled with black cleavage faces, or amorphous; sometimes oolitic; weathers rough. Thickness 0 to 100+ feet. Is without upper stratigraphic limit but rests conformably on an unnamed Carboniferous [?] quartzite, 25 feet thick, which is unconformably on Algonkian strata. Contains numerous fossils, identified by Weller as of St. Louis horizon. Absence of earlier Mississippian strata indicates unusual overlap.
Type locality: on Yakinikak Creek, 4 mi west of North Fork of Flathead River, Glacier National Park, Flathead Co., northwestern MT.
Source: US geologic names lexicon (USGS Bull. 896, p. 2380).
- Usage in publication:
-
- Yakinikak limestone
- Modifications:
-
- Areal extent
- AAPG geologic province:
-
- North Western Overthrust
Summary:
Pg. 309. Yakinikak limestone. Represents remnant of an imbricate thrust sheet that has been thrust over subjacent Pennsylvanian(?) quartzite. Age is Late Mississippian.
Source: US geologic names lexicon (USGS Bull. 1200, p. 4314).
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 ([ ]).