Sanup Plateau Member of Muav Limestone of Tonto Group (AZ-local)
Recognized locally in western Grand Canyon.
[?] Garnet Canyon Tongue (AZ).
Middle Cambrian
Designation, Sanup Plateau, comes from large promontory of that name in western Grand Canyon, [Mohave Co., northwestern AZ]. Lower of two thin but persistent cliff-forming units that extend through the western two-thirds of Grand Canyon between slope-forming tongues of shale and other weak sediments (McKee, 1945).
Plateau sedimentary province
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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