Usage:
Tunnel Formation (NV*)
Geologic age:
Tertiary*
Miocene*
Type section, locality, area and/or origin of name:
Type section: extends about 5,000 ft east-northeast from drillhole UE-12n14, across east face of Rainier Mesa, Nye Co., NV. Named from series of tunnels dug during 1950's for experimental explosions on Nevada Test Site (Sawyer and others, 1994).
Reference section (subsurface): depth-interval 1,152 to 1,667 ft, drillhole UE-12n14 (Sawyer and others, 1994).
AAPG geologic province:
Great Basin 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 ([ ]).