Figure 2

Calcite veins in cuttings (CV-1, sample 338-C0002F-56-SMW; CV-2, sample 338-C0002F-258-SMW). (a) Calcite veins in cuttings (CV-1, sample 338-C0002F-56-SMW, after Figure F10. E. of Moore et al.[2013]). (b-g) Photomicrographs of analyzed calcite vein samples. (b) CV-1 (crossed polarized light). Note that the abrupt change in grain size between the fine-grained and coarse-grained parts. (c) e-twins in calcite grains from CV-1 (crossed polarized light). The locality is shown in (b) by a frame. (d) Calcite vein in cuttings (CV-2, sample 338-C0002F-258-SMW, plane polarized light). Mechanical e-twins are indicated by solid bars, and two sets of e-twins are sometimes developed (shown by crosses). (e) Another part of calcite vein sample CV-2 (plane polarized light), where ‘A’ denotes the same point as ‘A’ in (d). (f) Concentration of fluid inclusions in kink bands from CV-2 (plane polarized light). The locality is shown in (e) by a frame. (g) Development of e-twins in fibrous calcite grains from CV-2 (shown by dashed lines, plane polarized light). The locality is shown in (d) by a frame. The frames shown by solid lines in (b) and (d) indicate the locality of crystallographic orientation measurements with electron back-scattered diffraction (EBSD) (Figures 4 and 5). See text for explanations.