00000nam 2200000zi 4500 9.956506 CaOODSP 20251031142449 m o d f cr mn||||||||| 251021t20212021oncab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-qu M183-2/8763E-PDF Crow, H. L., author. Mineralogical properties of Champlain Sea sediments and their effects on borehole geophysical logs, western Quebec / H.L. Crow, R.J. Enkin, J.B. Percival, and O.N. Al-Mufti. [Ottawa] : Natural Resources Canada = Ressources naturelles Canada, 2021. ©2021 1 online resource (68 pages) : illustrations (chiefly colour), colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Geological Survey of Canada open file, 2816-7155 ; 8763 ISSN of series supplied from ISSN Portal. Includes bibliographical references (pages 34-36). "The Geological Survey of Canada is conducting geoscientific investigations in Breckenridge Creek Valley (Municipality of Pontiac, western Quebec) where ancient and modern landslides have occurred in the fine-grained, post-glacial sediments of the former Champlain Sea. Multidisciplinary studies aim to gain a better understanding of how these sediments respond to earthquake shaking, and what factors increase their susceptibility to retrogressive landslides. As part of these investigations, downhole geophysical logs collected in a 75-m borehole displayed relatively low and unvarying gamma-ray responses, downward increasing density and velocity trends, and variable magnetic susceptibility responses. Laboratory analyses of existing cores were undertaken to better understand these geophysical log responses, and relate them to depositional and post-depositional characteristics of the sediments. … This Open File Report summarizes the laboratory methods and datasets resulting from new analyses of sediment cores, and discusses the results in the context of the geophysical log responses. New insights on broader sedimentological and geochemical conditions in Champlain Sea sediments are also discussed"--Abstract. Sediments (Geology) Québec (Province) Pontiac Analysis. Geophysical well logging Québec (Province) Pontiac. Sédiments (Géologie) Québec (Province) Pontiac Analyse. Diagraphies géophysiques Québec (Province) Pontiac. Champlain Sea. Champlain, Mer de. Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 8763. (CaOODSP)9.506878 PDF 64.10 MB https://publications.gc.ca/collections/collection_2025/rncan-nrcan/m183-2/M183-2-8763-eng.pdf HTML N/A https://doi.org/10.4095/327855