New conodont data constraining the age of the 'Bear Rock assemblage' in the Colville Hills, Northwest Territories / S.A. Gouwy, R.B. MacNaughton, and K.M. Fallas. : M44-2017/3E-PDF

"In the Colville Hills region of the Northwest Territories, the Lower to Middle Devonian succession consists of variably brecciated limestone and dolostone that historically has been assigned to the Bear Rock Formation. Nonbrecciated strata within this interval can be assigned to the Arnica and Landry formations, but bedrock exposure is too sparse to permit these units to be mapped. In view of the internal complexity of this stratigraphic succession, the term 'Bear Rock assemblage' is applied to this interval. Only limited age constraints on these strata have been reported. Conodont assemblages collected in 2015 demonstrate that the succession ranges from lowermost Emsian to lower Eifelian (dehiscens to costatus zones). This is comparable to the inferred age of Bear Rock Formation in the Franklin Mountains and Mackenzie Mountains. Thermal alteration of most samples is low, but one sample records evidence of higher maximum temperatures, possibly related to hydrothermal alteration"--Abstract, p. 1.

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Renseignements sur la publication
Ministère/Organisme Canada. Natural Resources Canada, issuing body.
Geological Survey of Canada, issuing body.
Titre New conodont data constraining the age of the 'Bear Rock assemblage' in the Colville Hills, Northwest Territories / S.A. Gouwy, R.B. MacNaughton, and K.M. Fallas.
Titre de la série Geological Survey of Canada, current research, 1701-4387 ; 2017-3
Type de publication Série - Voir l'enregistrement principal
Langue [Anglais]
Format Électronique
Document électronique
Note(s) Includes bibliographical references.
Includes abstract in French.
Information sur la publication [Ottawa] : Natural Resources Canada, Geological Survey of Canada, 2017.
Auteur / Contributeur Gouwy, S. A., author.
MacNaughton, Robert Bruce, 1968- contributor.
Fallas, K. M., contributor.
Description 11 p. : maps, photos
ISBN 978-0-660-23760-2
Numéro de catalogue
  • M44-2017/3E-PDF
Descripteurs Stratigraphy
Geological maps
Mountains
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