Laboratory and field studies to investigate isotope effects occurring during the formation of permafrost / F. Michel and P. Fritz. : M74-3/79-16E-PDF

"Significant and systematic variations in oxygen-18 and tritium contents were documented in field cores collected in 1974 along the Mackenzie Valley and Polar Gas pipeline routes. As a result of these findings a laboratory program was initiated in the fall of 1977 to investigate these isotope variations under controlled conditions which simulate the growth of permafrost. This report describes the work completed during the second year of the program in developing the equipment and experimental procedures. Data obtained during the first five experimental runs are discussed in relation to fundamental guidelines for future experiments and in relation to the effect the variations produced or not produced will have on the interpretation of the naturally occurring isotopic variations"--Abstract.

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