Figure F15.
Depth profiles of (
A
) TiO
2
, (
B
) Al
2
O
3
, (
C
) SiO
2
, and (
D
) Ti/Al concentrations. Subunit 4A = gabbro sill, Subunit 4B = lower igneous section. Circles = basal sediments, red diamonds = volcanic ash samples, and triangles = baked sediments.
