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National Geologic Map Database

Geologic Unit: Lava Falls

Usage:

[?] Lava Falls Tongue of Muav Limestone of Tonto Group (AZ-local)
[?] Lava Falls Tongue of Bright Angel Shale of Tonto Group (AZ-local)
Recognized locally in Grand Canyon.


Geologic age:

Middle Cambrian


Type section, locality, area and/or origin of name:

About 1 mi east of Lava Falls at foot of Toroweap Canyon, Grand Canyon, Coconino Co., northwestern AZ (McKee, 1945).


AAPG geologic province:

Plateau sedimentary 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 ([ ]).