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TitleGeological map and notes on the Ordovician and Silurian Lith- and Biostratigraphy, Anticosti Island, Quebec
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBolton, T E
SourceGeological Survey of Canada, Paper 71-19, 1972, 44 pages (2 sheets), Open Access logo Open Access
PublisherCanada Department of Energy, Mines and Resources
MapsPublication contains 1 map
Map Info.geological, 1:250,000
Mediapaper; on-line; digital
RelatedThis publication contains Anticosti Island, Quebec
File formatpdf
NTS12E; 12F/03; 12F/04; 12F/05; 12F/06; 12F/11; 12F/12; 12F/13; 12F/14; 22H/01; 22H/02; 22H/07; 22H/08; 22H/09; 22H/10; 22H/15; 22H/16
AreaAnticosti Island
Lat/Long WENS-65.0000 -61.5000 50.0000 49.0000
Subjectsgeochronology; industrial minerals; aggregates; bioherms; drillholes; fossil lists; fossil zones; radiometric dates; lithostratigraphy; biostratigraphy; richmondian; Becscie Formation; Chicotte Formation; Ellis Bay Formation; Gun River Formation; Jupiter Formation; Vaureal Formation; Ordovician; Silurian
Illustrationscorrelation charts
Released1972 01 01; 2015 08 27
AbstractThe six formations detailed on the preliminary geological map of Anticosti Island, Quebec, represent an uninterrupted sequence of nearly flatlying rocks of Upper Ordovician to Middle Silurian ages. The Upper Ordovician strata, divisible into two formations, Vaureal and Ellis Bay, are persistent, alternating calcareous and argillaceous units, each bearing distinct marine faunal assemblages. These rocks occupy the northwestern one-third of the island. The succeeding Lower and Middle Silurian strata of the Becscie, Gun River and Jupiter Formations are more variable lithological units, the upperrnost Chicotte Formation, occurring only along the southern coast of the island, being everywhere a massive, crinoidal limestone. These Silurian formations, of Llandoverian and early Wenlockian ages (Alexandrian and early Niagaran), are highly fossiliferous and divisible into several tentative faunal units. Characteristic fossils from each of the six formations are illustrated in a preliminary fashion and grouped by formation.

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