Usage:
Days Creek Formation of Myrtle Group (OR*)
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Type section: along South Umpqua River in NW/4 sec. 15, SW/4 sec. 47[?], and E/2 sec. 9, T. 30 N., R. 4 W., Douglas Co., southwestern OR. Named from village of Days Creek (Imlay and others, 1959).
AAPG geologic province:
Western Columbia basin*
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 ([ ]).