00000nam 2200000zi 4500 9.951643 CaOODSP 20251031142449 m o d f cr cn||||||||| 250530t20252025oncado ob f000 0 eng d 9780660775333 CaOODSP eng rda CaOODSP eng eng fre n-cn--- M183-2/9281E-PDF Nania, L., author. Standardized procedure for silt (63-10, 10-6, 6-2 µm) and clay (2-0.6, 0.6-0.2, < 0.2 µm) separations for mineral characterization and geochronology / L. Nania, J.W. Powell, A. Grenier, I. Bilot, and J.B. Percival. [Ottawa] : Geological Survey of Canada, 2025. ©2025 1 online resource (i, 30 pages) : illustrations, graphs, photographs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Open file, 2816-7155 ; 9281 Includes bibliographical references (pages 19-22). "When dealing with clay-rich samples, separating and identifying authigenic from detrital minerals into distinct subsamples are crucial steps in elucidating geological parameters for tectonic, economic and geochronological studies. The following report outlines a clay separation procedure employed at the Geological Survey of Canada to isolate authigenic and detrital minerals into different silt and clay fractions, quantifying non-clay minerals in the separated samples, and estimating the crystallinity index of clay minerals. The grain size of the fractions obtained using this procedure are examined using a laser particle size analyzer, while the identification of their mineralogical composition is achieved using X-ray diffraction analysis. This protocol provides guidelines for clay sample preparation before chemical and geochronological analyses to determine geological processes such as: diagenesis, weathering, faulting (fault slip and fluid circulation), and host-rock alteration associated with mineralization"--Abstract, page i. Clay Canada Analysis. Geological time Canada. Argile Canada Analyse. Géochronologie Canada. Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 2816-7155 ; 9281. (CaOODSP)9.506878 PDF 2.91 MB https://publications.gc.ca/collections/collection_2025/rncan-nrcan/m183-2/M183-2-9281-eng.pdf HTML N/A https://doi.org/10.4095/p4uapabesk