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AAPG Bulletin
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AAPG Bulletin; Year: 2025; Issue: April DOI: 10.1306/03182524012
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Figure 10. Photomicrographs of the normal-oblique fault zone in well B. (A) Core section where the fault was observed. It contains a brecciated laminate (Brlam) cemented with calcite (Brcem) and oblique striations on fault plane (see Figure 7C). (B) Plane-parallel transmitted light image showing quartz vein (QV) and Brcem sheared by the fault. The fault is mineralized with saddle dolomite (SD). (C) The Brcem filled with quartz (Qtz) and SD. (D) Energy-dispersive x-ray spectroscopy map showing porous fault breccia filled by Qtz, SD, and barite (B). HRC = host rock clast.
Figure 10. Photomicrographs of the normal-oblique fault zone in well B. (A) Core section where the fault was observed. It contains a brecciated laminate (Brlam) cemented with calcite (Brcem) and oblique striations on fault plane (see Figure 7C). (B) Plane-parallel transmitted light image showing quartz vein (QV) and Brcem sheared by the fault. The fault is mineralized with saddle dolomite (SD). (C) The Brcem filled with quartz (Qtz) and SD. (D) Energy-dispersive x-ray spectroscopy map showing porous fault breccia filled by Qtz, SD, and barite (B). HRC = host rock clast.