Figure 4
Microcomputed X-ray tomography (µCT) reconstructions of Westerly granite samples WGSI3 (a) and WG102 (b). The red surface shows the approximate position of s3DXRD scans in each sample. The blue domain in sample WGSI3 corresponds to open fractures with an aperture larger than 12.4 µm. The lower panels show the corresponding µCT slice, with different minerals labeled. bt: biotite; fsp: feldspar (orthoclase or oligoclase); mt: magnetite; qtz: quartz. |