Usage:
Marsh Creek Breccia Member of Talkeetna Formation (AK*)
Geologic age:
Jurassic, Late*
Type section, locality, area and/or origin of name:
Type section: along south shore of Tuxedni Bay, starting 6 mi northwest of Fossil Point and continuing 2.25 mi to contact with quartz diorite pluton, Cook Inlet region, southwestern AK. Best exposed in belt 1 to 2 mi wide from head of Iniskin Bay northeastward to south slope of Iliamna Volcano. Named from Marsh Creek, Iniskin-Tuxedni region, southwestern AK (Detterman and Hartsock, 1966).
AAPG geologic province:
Alaska Southwestern region*
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 ([ ]).