Figure F16. Main macroscopic and microscopic characteristics of Unit 6. A. Interval 203-1243B-13R-1, 55-67 cm. B. Sample 203-12437B-12R-1, 136-140 cm (PPL; field of view = 2.75 mm; photomicrograph 1243B-42). C. Sample 203-1243B-13R-1, 84-87 cm (PPL; field of view = 2.75 mm; photomicrograph 1243B-43) D. Sample 203-1243B-13R-1, 84-87 cm (XPL; field of view = 2.75 mm; photomicrograph 1243B-44).