00000nam 2200000zi 4500 9.914230 CaOODSP 20251031142448 m o d f cr cn||||||||| 220808t20222022oncabdo ob f000 0 eng d 9780660449340 CaOODSP eng rda CaOODSP n-cn-on M183-2/8913E-PDF Olson, L. C., author. Chemostratigraphic logging of the Lower Ordovician and Precambrian, Bells Corners Borehole Calibration Facility, Ottawa, Ontario / L.C. Olson, R.D. Knight, H.L. Crow, and H.A.J. Russell. Ottawa, Ontario : Geological Survey of Canada, 2022. ©2022 1 online resource (22 pages) : illustrations, maps, graphs, photographs + Appendices (3 volumes). text txt rdacontent computer c rdamedia online resource cr rdacarrier Open file, 2816-7155 ; 8913 This record only includes the Open File in PDF; the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/. Includes bibliographical references (pages 19-22). "Geochemical data were collected from a 120-meter-deep borehole (BC81-2) located at the Geological Survey of Canada's Bells Corners Borehole Calibration Facility in Ottawa, Ontario. This report documents geochemical data collected for the most frequently logged of the six boreholes located at the facility. The geochemical data were collected using a portable X-ray fluorescence (pXRF) spectrometer with a subset of samples collected for modern laboratory based fusion and multi-acid methods to calibrate the pXRF data for improved accuracy. Borehole geochemistry provides a characterization of Precambrian and overlying Ordovician rocks in the Ottawa area that augments the understanding of geophysical properties obtained from the calibration borehole. The combined geochemical and geophysical datasets further define rock characteristics, formational boundaries, as well as alteration zones. The results demonstrate the usefulness of pXRF derived geochemical data and chemostratigraphy of rock cores. The chemostratigraphic data augment data collected with spectral gamma logging tools and support an enhanced interpretation of geological contacts across transitional boundaries and the nature of the matrix mineralogy"--Abstract, page 1. Geology, Stratigraphic Ordovician. Geology, Stratigraphic Precambrian. Chemostratigraphy Ontario Ottawa. Stratigraphie Ordovicien. Stratigraphie Précambrien. Chimiostratigraphie Ontario Ottawa. Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 2816-7155 ; 8913. (CaOODSP)9.506878 PDF 15.55 MB https://publications.gc.ca/collections/collection_2022/rncan-nrcan/m183-2/M183-2-8913-eng.pdf Report PDF 3.80 MB https://publications.gc.ca/collections/collection_2022/rncan-nrcan/m183-2/M183-2-8913B-eng.pdf Appendix B PDF 19.57 MB https://publications.gc.ca/collections/collection_2022/rncan-nrcan/m183-2/M183-2-8913C-eng.pdf Appendix C PDF 9.89 MB https://publications.gc.ca/collections/collection_2022/rncan-nrcan/m183-2/M183-2-8913D-eng.pdf Appendix D HTML N/A https://doi.org/10.4095/330519 GEOSCAN Link 330519