7682 66.4 siltY Marl. frable, f.j., CAlC 55 becom[ing] [illegible]y 66.5- 66.7, then frAbile ledgy 67.2 fissle brownish grey mudst. becoming brownish upward to contact at 67.7 w. fissle. Marl. 68.4. Carb papery siltY Fisslesh. 68.6. Fissle Marl. 69.8. 11 bounded, vfy simple [8] x-bedded) CAlC ledgy 55. + to 3 dm beds fissle Marl [illegible] at 55 ripple marked Marl grey fissle 69.9 to 70.2 trough 55. low [X] bed, simple a ripple in ledgy. abt 10-20 cm thick sep by frable ss vfy middle CAlc. base of great SS channel CAvernous wh middle contorted &m thick