Table T4. Calcareous nannofossil datums, Hole 1052A.
| Datum | Species | Zone/Subzone | Age (Ma) |
Core,
section, interval (cm) |
Depth (mbsf) |
Error
depth (mbsf) |
|
|---|---|---|---|---|---|---|---|
171B-1052A |
|||||||
T |
C. grandis |
t CP14b |
37.1 |
9H-6, 87-89 |
77.06 |
78.55 |
|
B |
D. bisecta |
? |
38.0 |
17X-1, 68-70 |
136.68 |
138.67 |
|
T |
C. solitus |
t CP14a |
40.4 |
19X-3, 43-44 |
157.49 |
158.73 |
|
B |
C. reticulatum |
? |
42.0 |
19X-3, 43-44 |
157.49 |
158.73 |
|
T |
N. fulgens |
43.1 |
19X-4, 63-65 |
158.73 |
160.44 |
||
B |
R. umbilicus |
b CP14a |
43.7 |
19X-4, 63-65 |
161.95 |
160.44 |
|
B* |
N. fulgens |
47.3 |
19X-4, 63-65 |
161.95 |
160.44 |
||
B* |
R. inflata |
b CP12b |
48.5 |
20X-1, 40-41 |
163.41 |
162.72 |
Notes: * = from Norris, Kroon, Klaus, et al., 1998. B = base of age datum, T = top of age datum, ? = questionable, b = base of age datum within zone, t = top of age datum within zone. Error depth = depth to next sample studied above or below a datum level.