Geological Survey of Canada, Current Research (Online) no. 2005-A3

ISBN-10: 0662410750
ISBN-13: 9780662410751
Category: Lakes
Pages: 8
Language: English
Published: 2005
Publisher: Natural Resources Canada

Description

This study was conducted in response to concerns raised by local residents about water quality in Fisherman Lake, located 18 kilometres north-west of Fort Liard, Northwest Territories. Field investigation of the lake revealed the existence of 13 gas seeps (largely methane) with distinct bubble trains rising continuously to the surface. This paper presents results of analyses of the gas & of the lake water and the determination, through isotope analyses, of whether the gas is of biogenic origin (related to the decomposition of organic matter) or thermogenic origin (representing a seep from geological strata of the gas field below the lake). The possible effects of methane on the lake water are also discussed and recommendations are made for further research.

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