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Geologic Unit: Model City
Map showing publication footprint
  • Usage in publication:
    • Model City Member
  • Modifications:
    • First used
  • Dominant lithology:
    • Limestone
    • Dolostone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Brett, C.E., Goodman, W.M., and LoDuca, S.T., 1990, Sequence stratigraphy of the type Niagaran Series (Silurian) of western New York and Ontario, IN Lash, G.G., ed., Western New York and Ontario; field trip guidebook: New York State Geological Association Guidebook, 62nd annual meeting, Fredonia, NY, no. 62, p. Sat C1-C71.


Summary:

New upper member of Irondequoit Formation (Clinton Group) credited to Brett and others, in press. Consists of massive, pinkish-gray, crinoidal limestone and dolostone. Rest with the sharp and slightly disconformable surface on the upper shaly beds of the Rockway Member. Model City shows a minor trend of upward deepening toward the top and a conformable, although abrupt contact with the overlying Rochester Shale.

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


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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