Table T9. Pyroclastic ash-fall deposits identified at Site 1139.
 
Lithologic unit Core Interval
(cm)
Depth
(mbsf)
Age
(Ma)
Age
type
Color Volcanic
components
Suggested composition
II
11R-1
107-109
96.17
24.0-18.0
D+F+N Dark and light gray Brown platy and vesicular glass shards Basalt

38R-3
17-19
356.80
31.0-26.5
F+N Dark gray Translucent glass shards and tube pumice Trachyte

38R-4
80-82
358.93
31.0-26.5
F+N Dark brown Brown, curviplanar-platy glass shards Basalt

Note: D = diatoms, F = foraminifers, N = nannofossils.