U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Ireson
Search archives
Map showing publication footprint
  • Usage in publication:
    • Ireson felsite
  • Modifications:
    • [Original reference]
  • Dominant lithology:
    • [Felsite]
  • AAPG geologic province:
    • New England province
Publication:

Chadwick, G.H., 1942, The rocks of Mount Desert Island, Maine [abs.]: Geological Society of America Bulletin, v. 53, no. 12, pt. 2, p. 1796-1797., See also Rocks and Minerals, v. 18, no. 10, p. 268-269


Summary:

Pg. 1796, 1797. Occurs in form of laccolith and intrusive dikes. Older than Prettymarsh diorite (new); younger than Frenchmans Bay series. Age is Late Silurian or Early Devonian.
Type locality not stated. Occurs at Ireson's Hill and its cliffs at The Ovens on north shore of Mount Desert Island, Hancock Co., southeastern ME. Other exposures also on this island.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1881).


Map showing publication footprint
  • Usage in publication:
    • Ireson felsite
  • Modifications:
    • [Original reference]
    • Areal extent
  • AAPG geologic province:
    • New England province
Publication:

Chadwick, G.H., 1944, The geology of Mount Desert Island (Acadia National Park) [Maine]: New York Academy of Sciences Transactions, 2nd series, v. 6, no. 6, p. 171-178.


Summary:

Pg. 173, 177. Dikes described as pink weathering. Areal distribution given.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1881).


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 04:24:22 PM MDT