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Geologic Unit: Melozi
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Map showing publication footprint
  • Usage in publication:
    • Melozi formation*
  • Modifications:
    • Named
    • Biostratigraphic dating
  • Dominant lithology:
    • Shale
    • Sandstone
  • AAPG geologic province:
    • Alaska West-Central region
Publication:

Martin, G.C., 1926, Mesozoic stratigraphy of Alaska: U.S. Geological Survey Bulletin, 776, 493 p.


Summary:

Named for exposures on north bank of Yukon River from 8 to 20 mi below Melozi telegraph station, lower Yukon and Norton Bay districts, west-central AK. Consists of freshwater shale and sandstone at least 1000 and possibly several 1000 ft thick. Contains fossil plants and freshwater invertebrates. Conformably overlies Ungalik conglomerate. Conformably underlies Nulato formation. Age is Late Cretaceous based on fossils. [List of fossils identified by several paleontologists included in report.]

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Melozi formation*
  • Modifications:
    • Revised
    • Age modified
    • Biostratigraphic dating
  • AAPG geologic province:
    • Alaska West-Central region
Publication:

Imlay, R.W., and Reeside, J.B., Jr., 1954, Correlation of the Cretaceous formations of Greenland and Alaska: Geological Society of America Bulletin, v. 65, no. 3, p. 223-246.


Summary:

Correlation chart shows Melozi formation in Shaktolik group in Nulato-Norton Bay and lower Yukon area. Age shown as Early Cretaceous (Albian) based on [reexamination] of fossils from unit.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Melozi Formation*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Alaska West-Central region
Publication:

Patton, W.W., Jr., 1973, Reconnaissance geology of the northern Yukon-Koyukuk province, Alaska, IN Shorter contributions to general geology: U.S. Geological Survey Professional Paper, 774-A, p. A1-A17.


Summary:

[Melozi Formation is removed from Shaktolik Group due to abandonment of name Shaktolik.] "Evidence (Patton and Bickel, 1956; Bell, 1963, p.10) suggests [Melozi] is marginal facies of Kaltag Formation" which is considered Early and Late Cretaceous in age.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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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 ([ ]).

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