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Moenkopi Formation

Dark red sandstone and mudstone; includes gypsum beds in northwestern Arizona; deposited on a low-relief coastal plain. (230-245 Ma)
StateArizona
NameMoenkopi Formation
Geologic ageEarly and Middle(?) Triassic
Original map label2m
Primary rock typemudstone
Secondary rock typesandstone
Other rock typesorthoquartzite; siltstone; arenite; claystone; conglomerate; dolostone (dolomite); gypsum; limestone; sedimentary breccia
Map references
Richard, S. M., Reynolds, S.J., Spencer, J. E., and Pearthree, P. A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.
Unit references
Richard, S. M., Reynolds, S.J., Spencer, J. E., and Pearthree, P. A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.
Blakey, R.C., 1989, Triassic and Jurassic geology of the southern Colorado Plateau, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 369-396.
Geographic coverageApache - Coconino - Mohave - Navajo

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