Synthesis of late Paleozoic and Mesozoic eolian deposits of the ...

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The eolian deposits in the Manakacha and
Wescogame Formations of the Supai Group in the
Grand Canyon and Mogollon Rim are not de-
scribed in the literature. Blakey (unpublished data)
has studied eolian deposits in the Mogollon Rim
and observed eolian strata in the Grand Canyon
as has Peterson (unpublished data). One coset of
probable eolian strata in the Manakacha Forma-
GRAND CANYON SEDONA HOLBROOK
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tion was estimated to be 20 m thick. R. Hunter
(pers. commun., 1985) reported to Blakey the
presence of eolian strata in the Supai Group of
Grand Canyon. The two formations each range
from 30 to 70 m thick where eolian strata are
suspected and may be about half eolian in origin.
Interestingly, McKee (1982) made no mention of
eolian deposits in the Supai Group, yet some of