00000nam 2200000za 4500 9.835844 CaOODSP 20221107150748 cr ||||||||||| 170426s1979 oncad||#ot f000 0 eng d CaOODSP eng eng eng fre n-cn-nt M74-3/79-16E-PDF Michel, F. Laboratory and field studies to investigate isotope effects occurring during the formation of permafrost [electronic resource] / F. Michel and P. Fritz. Ottawa : Energy, Mines and Resources Canada, Earth Physics Branch, 1978. iv, 65 p. : ill., charts Earth Physics Branch open file ; no. 79-16 Title from cover. At head of title: Geothermal Service of Canada. Digitized edition from print produced 2017 [by Natural Resources Canada] Includes bibliographical references. "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. Includes abstract in French. gccst Geochemistry gccst Permafrost Fritz, P. (Peter), 1937- Canada. Energy, Mines and Resources Canada. Canada. Earth Physics Branch. Open file (Earth Physics Branch) no. 79-16 (CaOODSP)9.835819 PDF 7.89 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M74-3-79-16-eng.pdf