Table 1. Planktonic foraminifer datums, Hole 999A.
| Event | Zone (base) | Age (Ma) |
Core, section, interval (cm) | Depth (mbsf) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1
|
2
|
Upper
|
Lower
|
Upper
|
Lower
|
Interpol.
|
(±)
|
||||
| 165-999A- | 165-999A- | ||||||||||
| LO | Truncorotalia tosaensis | Pt1b |
0.65 | Not observed | |||||||
| LO | Globigerinoides obliquus | 1.3 | 5H-5, 42-55 | 5H-CC, 14-16 | 42.52 | 45.58 | 44.05 | 1.53 | |||
| LO | Globigerinoides fistulosus | Pt1a |
1.7 | 8H-2, 42-44 | 8H-5, 42-44 | 66.52 | 71.02 | 68.77 | 2.25 | ||
| FO | Truncorotalia truncatulinoides | N22 |
2.0 | 8H-2, 42-44 | 8H-5, 42-44 | 66.52 | 71.02 | 68.77 | 2.25 | ||
| LO | Menardella exilis | 2.2 | 8H-CC, 24-26 | 9H-2, 42-44 | 74.08 | 76.02 | 75.05 | 0.97 | |||
| LO | Menardella miocenica | PL6 |
2.3 | 9H-2, 42-44 | 9H-5, 42-44 | 76.02 | 80.52 | 78.27 | 2.25 | ||
| Re | Pulleniatina spp. in Atlantic | 2.3 | 8H-CC, 24-26 | 9H-2, 42-44 | 74.02 | 76.02 | 75.02 | 1.00 | |||
| LO | Menardella limbata | 2.4 | 10H-3, 32-34 | 10H-5, 42-44 | 86.92 | 90.02 | 88.47 | 1.55 | |||
| LO | Menardella pertenuis | 2.6 | 10H-3, 32-34 | 10H-5, 42-44 | 86.92 | 90.02 | 88.47 | 1.55 | |||
| LO | Menardella multicamerata | 3.0 | 11H-2, 42-44 | 11H-5, 42-44 | 95.02 | 99.52 | 97.27 | 2.25 | |||
| LO | Dentoglobigerna altispira | PL5 |
3.0 | 11H-2, 42-44 | 11H-5, 42-44 | 95.02 | 99.52 | 97.27 | 2.25 | ||
| LO | Sphaeroidinellopsis | PL4 |
3.12 | 11H-CC, 22-25 | 12H-2, 42-44 | 102.58 | 104.52 | 103.55 | 0.97 | ||
| FO | Truncorotalia tosaensis | N21 |
3.20 | See Table 4 | |||||||
| FO | Globigerinoides fistulosus | 3.2 | 10H-3, 32-34 | 10H-5, 42-44 | 86.92 | 90.02 | 88.47 | 1.55 | |||
| FO | Menardella pertenuis | 3.5 | 10H-CC, 34-36 | 11H-2, 42-44 | 93.08 | 95.02 | 94.05 | 0.97 | |||
| Di | Pulleniatina spp. in Atlantic | 3.5 | 11H-CC, 22-25 | 12H-2, 42-44 | 102.58 | 104.52 | 103.55 | 0.97 | |||
| LO | Hirsutella margaritae | PL3 |
3.58 | 12H-5, 42-44 | 12H-CC, 36-38 | 109.02 | 112.08 | 110.55 | 1.53 | ||
| FO | Menardella miocenica | N20 |
3.6 | 11H-5, 42-44 | 11H-CC, 22-25 | 99.52 | 102.58 | 101.05 | 1.53 | ||
| LO | Globoturborotalita nepenthes | PL2 |
4.3 | 15H-5, 42-44 | 15H-CC, 28-31 | 137.55 | 140.58 | 139.07 | 1.52 | ||
| LO | Globorotalia plesiotumida | 4.4 | 13H-CC, 28-31 | 14H-2, 42-44 | 121.58 | 123.52 | 122.55 | 0.97 | |||
| FO | Menardella exilis | 4.5 | 15H-5, 42-44 | 15H-CC, 28-31 | 137.55 | 140.58 | 139.07 | 1.52 | |||
| FO | Truncorotalia crassaformis | 4.7 | 15H-5, 42-44 | 15H-CC, 28-31 | 137.55 | 140.58 | 139.07 | 1.52 | |||
| LO | Hirsutella cibaoensis | PL1b |
5.0 | 15H-5, 42-44 | 15H-CC, 28-31 | 137.55 | 140.58 | 139.07 | 1.52 | ||
| LO | Globoquadrina baroemoenensis | 5.5 | 15H-CC, 28-31 | 16H-2, 42-44 | 140.58 | 142.52 | 141.55 | 0.97 | |||
| FO | Sphaeroidinella dehiscens | N19 |
5.6 | 17H-CC, 21-23 | 18H-2, 42-44 | 159.58 | 161.52 | 160.55 | 0.97 | ||
| FO | Globorotalia tumida | N18 |
PL1a |
5.9 (5.6) | 18H-2, 42-44 | 18H-5, 42-44 | 161.52 | 166.05 | 163.79 | 2.27 | |
| FO | Hirsutella margaritae | 6.0 | 17H-CC, 21-23 | 18H-2, 42-44 | 159.58 | 161.52 | 160.55 | 0.97 | |||
| LO | Globorotalia lenguaensis | M14 |
6.0 | 27H-CC, 25-27 | 28H-2, 42-44 | 248.68 | 250.62 | 249.65 | 0.97 | ||
| FO | Globigernoides conglobatus | 6.2 | 17H-5, 42-44 | 17H-CC, 21-23 | 156.52 | 159.58 | 158.05 | 1.53 | |||
| FO | Hirsutella cibaoensis | 7.7 | 25X-CC, 20-23 | 26X-2, 40-42 | 229.48 | 231.40 | 230.44 | 0.96 | |||
| FO | Candeina nitida | 8.0 | 25X-CC, 20-23 | 26X-CC, 17-20 | 229.48 | 239.08 | 234.28 | 4.80 | |||
| FO | Globorotalia plesiotumida | N17 |
8.3 | 26X-5. 50-52 | 26X-CC, 17-20 | 236.00 | 239.08 | 237.54 | 1.54 | ||
| FO | Neogloboquadrina acostaensis | N16 |
M13 |
10.6 (10.9) | 29X-5, 41-43 | 29X-6, 40-42 | 264.81 | 266.31 | 265.56 | 0.75 | |
| LO | Menardella praemenardii | 10.7 | 31X-5, 42-44 | 31X-CC, 37-40 | 284.02 | 287.18 | 285.60 | 1.58 | |||
| LO | Paragloborotalia mayeri | N15 |
M12 |
10.8 (11.4) | 30X-1, 42-44 | 30X-2, 30-32 | 268.42 | 269.80 | 269.11 | 0.69 | |
| FO | Globoturborotalita apertura | 10.8 | 29X-2, 41-43 | 29X-4, 42-44 | 260.31 | 263.32 | 261.82 | 1.51 | |||
| FO | Globoturborotalita nepenthes | N14 |
M11 |
11.6 (11.8) | 32X-5, 42-44 | 32X-CC, 37-40 | 293.62 | 296.68 | 295.15 | 1.53 | |
| LO | Fohsella fohsi | N13 |
11.8 | 33X-1, 41-43 | 33X-3, 42-44 | 297.11 | 300.11 | 298.61 | 1.50 | ||
| LO | Fohsella robusta | M10 |
11.8 | 33X-1, 41-43 | 33X-3, 42-44 | 297.11 | 300.11 | 298.61 | 1.50 | ||
| FO | Globorotalia lenguaensis | 12.6 | 34X-5, 39-41 | 34X-CC, 33-37 | 312.69 | 315.98 | 314.34 | 1.65 | |||
| FO | Fohsella robusta | M9b |
12.7 | 33X-1, 41-43 | 33X-3, 42-44 | 297.11 | 300.11 | 298.61 | 1.50 | ||
| FO | Fohsella lobata | M9a |
13.2 | Not observed | |||||||
| FO | Fohsella fohsi | N12 |
M8 |
13.5 (12.7) | 33X-CC, 18-20 | 34X-2, 41-43 | 306.28 | 308.21 | 307.25 | 1.93 | |
| FO | Fohsella praefohsi | N11 |
13.9 | 36X-5, 35-37 | 36X-CC, 35-37 | 331.45 | 335.18 | 333.32 | 1.87 | ||
| LO | Menardella archeomenardii | 14.3 | 37X-CC, 25-27 | 38X-2, 42-44 | 344.78 | 346.72 | 345.75 | 0.97 | |||
| FO | Fohsella peripheroacuta | N10 |
M7 |
14.8 | 37X-CC, 25-27 | 38X-2, 42-44 | 344.78 | 346.72 | 345.75 | ||
| FO | Menardella praemenardii | 14.9 | 37X-5, 40-42 | 37X-CC, 25-27 | 341.60 | 344.78 | 343.19 | 1.59 | |||
| FO | Orbulina universa | N9 |
M6 |
15.1 | 37X-5, 40-42 | 37X-CC, 25-27 | 341.60 | 344.78 | 343.19 | 1.59 | |
| FO | Praeorbulina glomerosa s.s. | M5b |
16.1 | Not observed | |||||||
| FO | Praeorbulina sicana | N8 |
M5a |
16.4 | 45X-2, 42-44 | 45X-5, 38-40 | 414.02 | 418.48 | 416.25 | 2.23 | |
| FO | Globorotalia birnageae | M4b |
16.7 | 48X-CC, 36-38 | 49X-2, 46-48 | 450.68 | 452.66 | 451.67 | 0.99 | ||
| LO | Catapsydrax dissimilis | N7 |
M4a |
17.3 | 49X-2, 46-48 | 49X-4, 42-44 | 452.66 | 455.62 | 454.14 | 1.48 | |
| LO | Globigerinoides altiapertura | 20.5 | 43X-CC, 34-37 | 44X-CC, 38-40 | 402.48 | 412.08 | 407.28 | 4.80 | |||
Notes: Zone 1 = Blow (1969) zonal scheme; Zone 2 = Berggren et al. (1995a, 1995b) zonal scheme. Ages are from Curry, Shackleton, Richter, et al. (1995). Ages in parentheses are those of Berggren et al. (1995a, 1995b). The names of zones that could not be accurately delimited in Hole 999A are italicized. Re = re-entrance, Di = disappearance.