Usage:
Mallard Lake Member of Plateau Rhyolite (WY*)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Type area: around Mallard Lake, 5 km northeast of Old Faithful, [Old Faithful 7.5-min quadrangle, Teton Co.], Yellowstone National Park, northwestern WY (Christiansen and Blank, 1972).
AAPG geologic province:
Yellowstone 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 ([ ]).