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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Difficulty Creek latite*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Latite
  • AAPG geologic province:
    • San Juan Mountains province
Publication:

Cross, Whitman, Howe, Ernest, and Irving, J.D., 1907, Description of the Ouray quadrangle [Colorado]: U.S. Geological Survey Geologic Atlas of the United States Folio, Ouray folio, no. 153, 20 p.


Summary:

Difficulty latite. Porphyritic latite. Cut by wild canyon of Difficulty Creek, Ouray region, Ouray 15-min quadrangle, [Ouray County], southwestern Colorado. Intrusive into Potosi tuffs [Potosi volcanic series]. Age is Tertiary (Miocene or Pliocene).

Source: US geologic names lexicon (USGS Bull. 896, p. 609).


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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