Usage:
Yachats Basalt (OR*)
Geologic age:
Tertiary
Eocene, late*
Type section, locality, area and/or origin of name:
Type section: outcrops along Yachats River extending northwest from base of sequence, near center sec. 31, T. 14 S., R. 11 W., to top of sequence in low sea cliffs at Yachats, in SE/4 sec. 22, T. 14 S., R. 12 W., Lincoln Co., OR (Snavely and MacLeod, 1974).
AAPG geologic province:
Oregon-Washington Coast Ranges province*
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 ([ ]).