Figure F13. Main macroscopic and microscopic characteristics of Unit 3. A. Interval 203-1243B-3R-1, 8-27 cm. B. Sample 203-1243B-5R-2, 29-32 cm (PPL; field of view = 2.75 mm; photomicrograph 1243B-28). C. Sample 203-1243B-5R-2, 29-32 cm (XPL; field of view = 2.75 mm; photomicrograph 1243B-26).