Table T3. Calcareous nannofossil datums, Site U1404.
Hole, core, section, interval (cm)
|
Age
|
Zone
|
Marker species
|
Age
(Ma) |
Depth (mbsf)
|
||||
|---|---|---|---|---|---|---|---|---|---|
Top
|
Bottom
|
Top
|
Bottom
|
Mid-point
|
±
|
||||
342-
|
342- | ||||||||
| Pliocene–Pleistocene | |||||||||
| U1404B-1H-1, 40 | U1404B-1H-1, 135 | B Gephyrocapsa (>5.5 µm) |
1.62
|
0.41
|
1.35
|
0.88
|
0.47
|
||
| U1404B-1H-1, 40 | U1404B-1H-1, 135 | T Discoaster tamalis |
2.80
|
0.41
|
1.35
|
0.88
|
0.47
|
||
| U1404B-1H-2, 45 | U1404B-1H-CC | T Sphenolithus spp. |
3.54
|
1.96
|
2.46
|
2.205
|
0.25
|
||
| U1404B-1H-2, 45 | U1404B-1H-CC | NN16 | T Reticulofenestra pseudoumbilicus |
3.70
|
1.96
|
2.46
|
2.205
|
0.25
|
|
| Miocene | |||||||||
| U1404A-5H-CC* | U1404A-6H-CC | Tc Discoaster deflandrei |
15.80
|
40.59
|
49.36
|
44.97
|
4.38
|
||
| U1404A-7H-CC | U1404A-8H-3, 115 | NN3 | T Triquetrorhabdulus carinatus |
18.28
|
59.11
|
65.86
|
62.48
|
3.38
|
|
| U1404A-12H-CC | U1404A-13H-2, 100 | B? Sphenolithus disbelemnos |
22.76
|
106.06
|
107.23
|
106.64
|
0.59
|
||
| U1404A-15H-6, 100 | U1404A-15H-CC | NN2 | B Discoaster druggii |
22.82
|
133.03
|
134.71
|
133.87
|
0.84
|
|
| U1404A-16H-CC* | U1404A-17H-2, 55 | T Dictyococcites bisectus (>10 µm) |
23.13
|
144.00
|
145.76
|
144.88
|
0.88
|
||
| U1404A-17H-2, 55 | U1404A-17H-CC | NN1 | T Sphenolithus ciperoensis |
24.43
|
145.76
|
153.72
|
149.74
|
3.98
|
|
| Oligocene | |||||||||
| U1404B-20H-CC | U1404B-21H-CC | T Sphenolithus distentus |
26.44
|
175.05
|
184.17
|
179.61
|
4.56
|
||
| U1404B-20H-CC | U1404A-21H-3, 93 | Bc Triquetrorhabdulus carinatus |
26.57
|
181.99
|
185.63
|
183.81
|
1.82
|
||
| U1404A-21H-3, 93 | U1404B-21H-CC* | NP24 | B Sphenolithus ciperoensis |
29.62
|
185.63
|
191.73
|
188.68
|
3.05
|
|
| U1404A-23H-4, 120* | U1404A-23H-4, 123 | NP23 | T Reticulofenestra umbilicus (>14 µm) |
32.02
|
200.60
|
200.63
|
200.62
|
0.02
|
|
| U1404A-23H-4, 120* | U1404A-23H-4, 123 | T Isthmolithus recurvus |
32.49
|
200.60
|
200.63
|
200.62
|
0.02
|
||
| U1404A-23H-4, 120* | U1404A-23H-4, 123 | NP22 | T Coccolithus formosus |
32.92
|
200.60
|
200.63
|
200.62
|
0.02
|
|
| U1404A-23H-5, 30 | U1404A-23H-5, 60 | Ta Clausicoccus subdistichus |
33.43
|
201.20
|
201.50
|
201.35
|
0.15
|
||
| Eocene/Oligocene boundary |
33.89
|
||||||||
| Eocene | |||||||||
| U1404A-24H-2, 90* | U1404A-24H-3, 30 | NP21 | T Discoaster saipanensis |
34.44
|
206.71
|
207.61
|
207.61
|
0.45
|
|
| U1404A-24H-2, 90* | U1404A-24H-3, 30 | T Discoaster barbadiensis |
34.76
|
206.71
|
207.61
|
207.61
|
0.45
|
||
| U1404A-24H-4, 46 | U1404A-24H-5, 30 | T Reticulofenestra reticulata |
35.40
|
209.26
|
210.61
|
209.93
|
0.67
|
||
| U1404A-24H-6, 96 (CC) | U1404A-25H-1, 100 | NP19/NP20 | B Isthmolithus recurvus |
36.97
|
212.76
|
213.80
|
213.28
|
0.52
|
|
| U1404A-25H-5, 100 | U1404A-25H-CC | T Chiasmolithus grandis |
37.98
|
219.80
|
220.56
|
220.18
|
0.38
|
||
| U1404A-28H-CC | U1404A-29H-1, 64* | B Dictyococcites bisectus (>10 µm)† |
40.36
|
244.03
|
245.01
|
244.52
|
0.49
|
||
| U1404A-33X-1, 120 | U1404A-33X-CC | NP17 | T Chiasmolithus solitus |
40.40
|
272.21
|
279.56
|
275.88
|
3.67
|
|
| U1404A-33X-CC | U1404A-34X-1, 56 | T Nannotetrina spp. |
41.85
|
279.56
|
281.27
|
280.41
|
0.86
|
||
| U1404A-34X-1, 56 | U1404A-34X-1, 56 | B? Reticulofenestra umbilicus (>14 µm) |
41.94
|
281.27
|
281.27
|
281.27
|
0.00
|
||
| T Nannotetrina fulgens |
42.87
|
||||||||
* = barren sample. † = from Fornaciari et al. (2010). B = base, Bc = base common, T = top, Ta = top of acme, Tc = top common.
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