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Dalquier Group
Stratigraphic label: [arch]dq
Map symbol: Adq

 

ABANDONED UNIT

Publication: 23 October 2020

 

 

  DISCLAIMER: This English version is translated from the original French. In case of any discrepancy, the French version shall prevail. 

Author: Labbé, 1994
Age: Archean
Stratotype: None
Type area: Eastern Abitibi
Geological province: Superior Province
Geological subdivision: Abitibi Subprovince
Lithology: Volcanic and volcano-sedimentary rocks
Category: Lithostratigraphic
Rank: N/A
Status: Informal
Use: Abandoned
Replacement Unit(s)
Table of contents
 
 

 

 

 

Background

In the early 1990s, Labbé (1994) began mapping the vast Amos-Landrienne area, updating the previous work of Weber and Latulippe (1964) and Imreh (1984). He informally created the Dalquier group with the aim of characterizing lithological units previously associated with the Amos Group (Imreh, 1984; Otis and Béland, 1986), but with geochemical characteristics different from basalts of this group.

The Dalquier Group consisted at that time of two distinct stratigraphic units: the Jonpol rhyolite and the Lac Arthur formation.

In the continuation of his 1994 work, Labbé (1995) redefined the Dalquier Group into two informal formations with distinct geochemical affinities: 1) the La Morandière formation, the basal unit outcropping mainly in the half-centre of sheet 32C12 and consisting mainly of tholeiitic basalt, and 2) the larger Lac Arthur formation (Labbé, 1994), consisting mainly of calc-alkaline andesite. The Jonpol rhyolite is then incorporated into the Lac Arthur formation.

 

Reasons for abandonment

In a synthesis of his work, Labbé (1999) proposed new formal stratigraphic divisions, now including the Lac Arthur and La Morandière groups, which were previously informal formations within the Dalquier group (Labbé, 1995). The name “Dalquier group” was then abandoned.

 

References

Publications Available Through SIGÉOM Examine

IMREH, L. 1984. SILLON DE LA MOTTE-VASSAN ET SON AVANT-PAYS MÉRIDIONAL: SYNTHÈSE VOLCANOLOGIQUE, LITHOSTRATIGRAPHIQUE ET GÎTOLOGIQUE. MINISTÈRE DE L’ÉNERGIE ET DES RESSOURCES, QUÉBEC; MM 82-04, 72 pages.

LABBÉ, J.-Y. 1994. SYNTHÈSE GÉOLOGIQUE DE LA RÉGION D’AMOS, ABITIBI. MINISTÈRE DES RESSOURCES NATURELLES, QUÉBEC; MB 94- 09, 13 pages.

LABBÉ, J.-Y. 1995. SYNTHÈSE GÉOLOGIQUE DE LA RÉGION D’AMOS, ABITIBI. MINISTÈRE DES RESSOURCES NATURELLES, QUÉBEC; MB 95-24, 27 pages.

LABBÉ, J.-Y. 1999. ÉTUDES GÉOLOGIQUES DANS LA RÉGION D’AMOS. MINISTÈRE DES RESSOURCES NATURELLES, QUÉBEC; ET 98-04, 87 pages.

WEBER, W.W., LATULIPPE, M. 1964. RÉGION D’AMOS- BARRAUTE, COMTÉ D’ABITIBI-EST. MINISTÈRE DES RICHESSES NATURELLES, QUÉBEC; RG-109.

 

Suggested Citation

Ministère de l’Énergie et des Ressources naturelles (MERN). Dalquier Group (abandoned unit). Quebec Stratigraphic Lexicon. http://gq.mines.gouv.qc.ca/lexique-stratigraphique/province-du-superieur/groupe-de-dalquier_en [accessed on Day Month Year].

Contributors

First publication

Pierre Pilote, Eng., M.Sc. A. pierre.pilote@mern.gouv.qc.ca (redaction)

Mehdi A. Guemache, P. Geo., Ph.D. (coordination); James Moorhead, P. Geo., M.Sc. (critical review); Simon Auclair, P. Geo., M.Sc. (editing); Céline Dupuis, P. Geo., Ph.D. (English version); Ricardo Escobar Moran (HTML editing). 

 
14 décembre 2020