|
Marker species/
Zonal boundaries |
Age
(Ma) |
Midpoint
(mcd) |
±
(m) |
|---|---|---|---|
| Nannofossil events: |
|
|
|
T Reticulofenestra umbilicus  14 µm |
31.70 | 2.66 | 0.19 |
| T Ericsonia formosa | 32.90 | 6.74 | 0.60 |
| T Fascicultihus spp.* | 54.10 | 152.94 | 0.06 |
| T Ericsonia robusta | 55.90 | 155.27 | 0.16 |
| B Discoaster multiradiatus | 56.20 | 155.65 | 0.07 |
| B Discoaster nobilis | 56.50 | 155.65 | 0.07 |
| Foraminifer events: |
|
|
|
| Benthic extinction event | 55.00 | 154.31 | 0.01 |
| Radiolarian events: |
|
|
|
| RP20/19 | 33.47 | 6.29 | 0.40 |
| RP19/18 | 34.77 | 7.71 | 0.32 |
| RP18/17 | 36.96 | 19.51 | 0.20 |
| RP17/16 | 38.12 | 23.59 | 0.75 |
| RP16/15 | 40.12 | 35.89 | 0.56 |
| RP15/14 | 41.39 | 52.08 | 0.75 |
| RP14/13 | 43.30 | 66.33 | 1.00 |
| RP13/12 | 44.48 | 77.56 | 0.73 |
| RP12/11 | 45.89 | 104.08 | 0.75 |
| RP8/7 | 52.22 | 127.86 | 13.16 |
Notes: T = top, B = base. * = age estimate in need of revision; event occurs 1.38 m above the P/E boundary (199-1221B-11X-3, 91 cm). Bold type = control point for LSR calculations in Figure F10. This table is also available in ASCII. [N1]