Dégradation et lessivage des hydrocarbures de la formation ordovicienne de Thumb Mountain encaissant le gîte Zn–Pb de Polaris (Territoires du Nord-Ouest, Canada)

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Disnar, J.R., Héroux, Y.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1995
• Subjects: General Earth and Planetary Sciences; Canada; Thumb; Cape Phillips; Irene Bay; Thumb Mountain; Territoires du Nord-Ouest
• Online Access: http://dx.doi.org/10.1139/e95-084; http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-084

Carbonate rocks of the Ordovician Thumb Mountain Formation, host to the Zn–Pb Polaris deposit, contain hydrocarbons that show types of alteration classically attributed to biodegradation and water washing. The hydrocarbons of the upper part of this formation and of the overlying Irene Bay Formation...