| Title | Accuracy of low porosity measurements in granite |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Katsube, T J; Scromeda, N |
| Source | Canadian Shield/Bouclier canadien; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1995-C, 1995 p. 265-270, https://doi.org/10.4095/202926  Open Access |
| Year | 1995 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English; French |
| Media | paper; on-line; digital |
| Related | This publication is contained in Canadian Shield
|
| File format | pdf |
| Subjects | igneous and metamorphic petrology; porosity; igneous rocks; granites; plutonic rocks; analytical methods |
| Illustrations | analyses |
| Released | 1995 01 01 |
| Abstract | Effective porosity (øE) of 32 granite samples from the Canadian Shield has been measured and compared with similar measurements previously made on the same samples, using slightly different measurement
procedures. The purpose was to investigate measurement accuracy of previous low porosity measurements. Effective porosity is determined by taking the difference between a water-saturated and oven-dried sample. Results show that øE values (0.27-0.64%)
obtained in this study are similar to those (0.16-0.60%) obtained in the past. A comparison of individual values show that previous values are lower by 10-40%. Results also indicate that reduced water saturation time and drying temperatures, used
previously, account for up to about 12% of that 40% and that other explanations must be found for the remaining 28%. The currently used saturation time and drying temperature are 300 minutes and 116°C, respectively, in compared to 40 minutes and
100-105°C used in the past. |
| GEOSCAN ID | 202926 |
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