Microstructure, porosity and mineralogy around fractures in Olkiluoto bedrock

作者：Kuva Jukka^*; Siitari Kauppi Marja; Lindberg Antero; Aaltonen Ismo; Turpeinen Tuomas; Myllys Markko; Timonen Jussi

来源：Engineering Geology, 2012, 139: 28-37.

DOI：10.1016/j.enggeo.2012.04.008

• Computed X-ray tomography
• Petrography
• C-14-PMMA method
• Porosity analysis
• 3D structure analysis
• Water-conducting fractures

3D distributions of minerals and porosities were determined for rock-core samples that included water-conducting fractures. The analysis of these samples was performed using conventional petrography methods, C-14-PMMA porosity analysis and X-ray tomography. It seems that the properties of rock around a water-conducting fracture depend on so many uncorrelated factors that no clear pattern emerged even for rock samples with a given type of fracture. We can conclude, however, that the present combination of methods can be used to infer novel structural information about alteration zones adjacent to fracture surfaces.

• 出版日期2012-6-22