U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Peru
Map showing publication footprint
  • Usage in publication:
    • Peru Formation
  • Modifications:
    • First used
  • Dominant lithology:
    • Granite
    • Marble
  • AAPG geologic province:
    • New England province
Publication:

Warner, Jeffrey, and Pankiwskyj, K.A., 1965, Geology of the Buckfield and Dixfield quadrangles in northwestern Maine, IN Hussey, A.M., II, ed., Guidebook to field trips in southern Maine: New England Intercollegiate Geological Conference Guidebook, 57th annual meeting, Brunswick, ME, October 8-10, 1965, p. 103-108.


Summary:

Peru Formation listed as an unpublished and unofficial stratigraphic name. In west part of Dixfield quad., composed of thinly-bedded calc-silicate (locally marble) and biotitic granulite. Grades into biotitic granulite with pods of calc-silicate in east part of quad. Is a calcareous sandstone interbedded with minor calcareous slate in Farmington quad. Occurs above Newton Hill Formation (new name) in Woodstock Group (new name). Stratigraphically below Severy Hill Formation (new name). Age is Silurian or Devonian.

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


Map showing publication footprint
  • Usage in publication:
    • Peru†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • New England province
Publication:

Osberg, P.H., Moench, R.H., and Warner, Jeffrey, 1968, Stratigraphy of the Merrimack synclinorium in west-central Maine, Chapter 18, IN Zen, E-an, and others, eds., Studies of Appalachian geology; northern and maritime: John Wiley and Sons Publishers, p. 241-253.


Summary:

Peru Formation of Warner and Pankiwskyj (1965) is here abandoned. Unit renamed Hildreths Formation.

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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 03:29:05 PM MDT