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Integrated stratigraphy of the lower and middle Fernie Formation in Alberta and British Columbia, western Canada.

Hall, R. and McNicoll, V. and Gröcke, D. R. and Craig, J. and Jonhston, K. (2004) 'Integrated stratigraphy of the lower and middle Fernie Formation in Alberta and British Columbia, western Canada.', Rivista italiana di paleontologia e stratigrafia., 110 (1). pp. 61-68.

Abstract

The lower and middle parts of the Fernie Formation in central-western Alberta and south-eastern British Columbia, ranging from Pliensbachian to ?Bathonian (Early to Middle Jurassic) in age, and consisting mainly of fossiliferous dark shales and black limestones, contain bentonitic clay horizons which have yielded radiometric ages using U-Pb analysis of zircon crystals. Here we report six new ages from the lowermost Red Deer Member (188.3 +1.5/-1 Ma); Highwood Member (ca. 173 Ma and 166.6 ± 0.2 Ma); and Grey Beds (167.0 ± 0.2 Ma, 165.6 ± 0.3 Ma, and 165.4 ± 0.3 Ma). Some of these bentonites are associated with ammonites and coccoliths which provide biostratigraphic constraints. Strontium and carbon and oxygen isotopes measured from belemnite rostra have been compared in two sections and the resulting curves are compared with those from western Europe.

Item Type:Article
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Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.13130/2039-4942/6264
Publisher statement:This article is available under a Creative Commons Attribution-NonCommercial-NoDerivatives Licence 4.0 International (CC BY-NC-ND 4.0)
Date accepted:30 September 2003
Date deposited:26 January 2017
Date of first online publication:April 2004
Date first made open access:No date available

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