| Unit/Subunit | Lithologies
with volcanic components |
Section | Feldspar | Glass (brown) |
Pumice | Lithics | Volcanic clay |
Tephra layer | Age (Ma) |
|---|---|---|---|---|---|---|---|---|---|
|
IA
|
Foraminifer/diatom-bearing nannofossil ooze | 1R-CC |
|
|
|
|
|
|
1.9-0.6
|
|
|
2R-CC |
|
|
|
|
|
|
1.9-0.6
|
|
|
IB
|
Foraminifer-bearing nannofossil ooze | 3R-CC |
|
|
|
|
|
|
18.0-11.5
|
|
|
4R-CC |
|
R
|
|
|
|
|
18.0-11.5
|
|
| 5R-CC |
|
R
|
|
|
P
|
|
18.0-11.5
|
||
| 6R-CC |
|
R
|
|
|
|
|
18.0-11.5
|
||
| 7R-CC |
|
P
|
|
|
P
|
|
18.0-11.5
|
||
| 8R-CC |
|
A
|
|
|
|
|
18.0-11.5
|
||
| 9R-CC |
|
R
|
|
|
R
|
|
24.0-18.0
|
||
| 10R-CC |
P
|
R
|
|
|
P
|
|
24.0-18.0
|
||
| 11R-CC |
|
P
|
|
|
|
T
|
24.0-18.0
|
||
| 12R-CC |
P
|
|
|
|
|
|
24.0-18.0
|
||
| 13R-CC |
|
|
|
|
|
|
24.0-18.0
|
||
| 14R-CC |
P
|
C
|
|
|
|
|
24.0-18.0
|
||
|
II
|
Nannofossil-bearing clay and claystone, and nannofossil-bearing ooze and chalk | 15R-CC |
|
C
|
|
|
P
|
|
24.0-18.0
|
| 16R-CC |
|
A
|
|
|
|
|
24.0-18.0
|
||
| 17R-CC |
|
R
|
|
|
|
|
24.0-18.0
|
||
| 18R-CC |
|
|
|
|
|
|
24.0-18.0
|
||
| 19R-CC |
|
|
|
|
|
|
26.5-23.8
|
||
| 20R-CC |
P
|
|
|
R
|
|
|
26.5-23.8
|
||
| 21R-CC |
C
|
|
|
C
|
|
|
26.5-23.8
|
||
| 22R-CC |
|
|
|
|
|
|
31.0-26.5
|
||
| 23R-CC |
|
|
|
|
|
|
31.0-26.5
|
||
| 24R-CC |
|
|
|
P
|
P
|
|
31.0-26.5
|
||
| 25R-CC |
|
|
|
|
|
|
31.0-26.5
|
||
| 26R-CC |
C
|
R
|
|
P
|
|
|
31.0-26.5
|
||
| 34R-CC |
|
|
|
|
C
|
|
31.0-26.5
|
||
| 35R-CC |
|
|
|
|
C
|
|
31.0-26.5
|
||
| 36R-CC |
|
|
|
|
|
|
31.0-26.5
|
||
| 37R-CC |
|
|
|
|
|
|
31.0-26.5
|
||
| 38R-CC |
|
|
|
|
|
TT
|
31.0-26.5
|
||
| 39R-CC |
P
|
|
|
|
P
|
|
31.0-26.5
|
||
Notes: Age from biostratigraphy. Volcanic components in >63-µm fraction of core catcher sample are represented by A = abundant, C = common, P = present, and R = rare. Volcanic components not abundant in Sections 183-1139A-27R-CC through 33R-CC and beyond 39R-CC in Unit II. T = discrete tephra are present in the core from which the core catcher was examined, TT = two tephra layers. Blanks = volcanic component not detected. Gray bar = Sections 183-1139A-27R-CC through 33R-CC contain no data.