00000nam 2200000zi 4500 9.870742 CaOODSP 20241203113647 m o d f cr bn||||||||| 190327s1996 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on En13-5/96-71E-PDF Harris, Steven M., author. The determination of the orientations of fracture planes in a weathered clay till using core samples / Steven M. Harris, Neil R. Thomson, Department of Civil Engineering, University of Waterloo ; Kentner S. Novakowski, Canada Centre for Inland Waters. [Ottawa] : Environment Canada, Water Science and Technology Directorate = Environnement Canada, Direction générale des sciences et de la technologie, eau, 1996. 1 online resource (13, 12 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 96-71 "Submitted to Ground Water, May 1996." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "A method has been developed to determine fracture plane orientations in clay-rich glacial deposits from core samples obtained from inclined borings. In this method, a portion of each core sample is removed to expose vertical and horizontal surfaces which are used to map each identified fracture plane. An analytical geometry technique is used in conjunction with the mapping data to determine the pole to each fracture plane. This fracture pole data can then be presented on a lower hemisphere equal area projection diagram to indicate preferred fracture plane orientations. The utility of the developed method is demonstrated through a detailed analysis of core samples collected from a 10 m² site located near Sarnia, Ontario. The data from this investigation indicated the presence of three sets of fracture planes; however, only one of these fracture sets was determined to be statistically significant. The developed method offers an alternative to mapping fracture plane orientations on exposed surfaces"--Abstract. Drift Fracture mechanics gccst Sediments Thomson, Neil Robert, 1957- author. Novakowski, Kent S., author. Canada. Environment Canada. Canada. Water Science and Technology Directorate. Canada Centre for Inland Waters. University of Waterloo. Department of Civil Engineering. National Water Research Institute (Canada) NWRI contribution ; 96-71. (CaOODSP)9.844121 PDF 2.74 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-96-71-eng.pdf