- Usage in publication:
-
- Kowak clays*
- Modifications:
-
- Named
- Dominant lithology:
-
- Clay
- AAPG geologic province:
-
- Alaska Northern region
Summary:
On left bank of Kowak River at about 158 deg W is remarkable clay bluff, 0.75 mi long and 150 ft high which is given name Kowak clays. Contains quantities of mammoth tusks. Geologic sketch map shows age of Kowak clays as Pleistocene(?).
Source: GNU records (USGS DDS-6; Menlo GNULEX).
- Usage in publication:
-
- "Kowak Clays"†
- Modifications:
-
- Abandoned
- Biostratigraphic dating
- AAPG geologic province:
-
- Alaska Northern region
Summary:
Palisades form typical exposure of lacustrine phase of deposits Spurr and Collier designated "Yukon Silts" and which Dall has called "Kowak Clays". They are for most part of Pleistocene age as is shown by fossils. [Name "Kowak Clays" is evidently abandoned as formal unit since name is used in quotes.]
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 ([ ]).