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- Usage in publication:
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- Novi Mountain Formation*
- Modifications:
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- Named
- Biostratigraphic dating
- Dominant lithology:
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- Limestone
- Siltstone
- AAPG geologic province:
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- Alaska West-Central region
Summary:
Named for exposures in vicinity of Novi Mountain. Composite type section designated on east and west flanks of Novi Mountain, secs.29, 30 and 32 T17S R28E, Medfra D-1 quad, west-central AK. Extends southwestward for about 25 km; also present 50 km southwest of Novi Mountain and in area south of Browns Fork and east of White Mountain Creek. Consists of thick cyclically interbedded sequence of thin-bedded silty to micritic limestone and calcareous siltstone. Is nearly 900 m thick. Overlies lower Paleozoic or Precambrian calc-schist unit. Gradationally underlies Telsitna Formation (new). Age is Early Ordovician based on sparse conodonts identified by J.E. Repetski (written commun., 1977-80). List included in report.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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 ([ ]).