Figure F19. Interval 192-1185B-22R-7, 71-82 cm, showing Unit 11 in contact with Unit 12. A chilled margin is visible along the edges of the aphanitic Unit 11 basalt. The contact is subvertical, suggesting that the base of Unit 11 is filling a fissure in the surface of Unit 12.

Figure F19. Interval 192-1185B-22R-7, 71-82 cm, showing Unit 11 in contact with Unit 12. A chilled margin is visible along the edges of the aphanitic Unit 11 basalt. The contact is subvertical, suggesting that the base of Unit 11 is filling a fissure in the surface of Unit 12.