Figure F12. Main macroscopic and microscopic characteristics of Unit 1. A. Interval 203-1243B-2R-1, 23-30 cm. B. Sample 203-1243B-2R-1, 23-25 cm (plane-polarized light [PPL]; field of view = 2.75 mm; photomicrograph 1243B-2). C. Sample 203-1243B-2R-1, 23-25 cm (cross-polarized light [XPL]; field of view = 2.75 mm; photomicrograph 1243B-3).

Figure F12. Main macroscopic and microscopic characteristics of Unit 1. A. Interval 203-1243B-2R-1, 23-30 cm. B. Sample 203-1243B-2R-1, 23-25 cm (plane-polarized light [PPL]; field of view = 2.75 mm; photomicrograph 1243B-2). C. Sample 203-1243B-2R-1, 23-25 cm (cross-polarized light [XPL]; field of view = 2.75 mm; photomicrograph 1243B-3).