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Geologic Units: Engadine
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Map showing publication footprint
  • Usage in publication:
    • Engadine dolomite
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
  • AAPG geologic province:
    • Michigan basin
Publication:

Smith, R.A., 1916, Limestones of Michigan: Michigan Geological Survey Publication, no. 21, p. 103-311., Also issued as Michigan Geol. Survey Geol. Ser., no. 17b


Summary:

Named the Engadine dolomite for Engadine, Mackinac Co., northern MI. Consists of very massive, hard, very crystalline dolomite, distinctly bluish or mottled and streaked with blue. Also characterized by numerous drusy cavities more or less completely filled with crystal of dolomite or pearl spar. Thickness is 54 to 95 feet. Overlies Manistique series. The Engadine is of Silurian age.

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


Map showing publication footprint
  • Usage in publication:
    • Engadine Group
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Michigan basin
Publication:

Johnson, A.M., Kesling, R.V., Lilienthal, R.T., and Sorensen, H.O., 1979, The Maple Block knoll reef in the Bush Bay Dolostone (Silurian, Engadine Group), Northern Peninsula of Michigan: University of Michigan, Museum of Paleontology Papers on Paleontology, no. 20, 33 p.


Summary:

Raised the Engadine to the Engadine Group. Group includes (ascending) the Rockview Dolostone, Rapson Dolostone, and Bush Bay Dolostone. Overlies the Manistique Group and underlies the Salina Group.

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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