|
Marker species/
Zonal boundaries |
Age
(Ma) |
Depth (mcd)
|
|
|---|---|---|---|
|
Midpoint
|
±
|
||
| Nannofossil events: |
|
|
|
| T Cyclicargolithus floridanus | 13.20 | 13.20 | 0.23 |
| T Sphenolithus heteromorphus | 13.60 | 20.67 | 0.79 |
| T Discoaster deflandrei acme | 16.10 | 22.69 | 0.94 |
| T Triquetrorhabdulus carinatus* | 19.60 | 20.48 | 0.24 |
| T Triquetrorhabdulus carinatus acme* | 22.00 | 4.04 | 1.08 |
| B Sphenolithus disbelemnos | 22.70 | 26.72 | 0.32 |
| T Sphenolithus delphix | 23.00 | 27.02 | 0.30 |
| B Sphenolithus delphix | 23.20 | 27.22 | 0.25 |
| T Sphenolithus ciperoensis | 24.10 | 26.17 | 0.35 |
| T Cyclicargolithus abisectus acme* | 24.60 | 26.67 | 0.80 |
| T Sphenolithus distentus | 26.50 | 29.55 | 0.75 |
| B Sphenolithus ciperoensis | 28.10 | 35.47 | 0.75 |
| T Sphenolithus pseudoradians | 29.10 | 44.23 | 0.75 |
| B Sphenolithus distentus | 30.40 | 49.99 | 0.75 |
T Reticulofenestra umbilicus  14 µm |
31.70 | 54.55 | 0.10 |
| T Ericsonia formosa | 32.90 | 57.23 | 0.75 |
| T Discoaster saipanensis | 34.00 | 33.85 | 13.83 |
| T Discoaster barbadiensis | 34.20 | 33.91 | 13.83 |
| T Chiasmolithus grandis | 37.10 | 34.84 | 15.12 |
| B Dictyococcites bisectus | 38.50 | 36.98 | 6.14 |
| T Dictyococcites hesslandii | 40.30 | 36.99 | 6.14 |
|
B Reticulofenestra umbilicus 14 µm |
42.50 | 72.83 | 0.38 |
| P Nannotetrina spp. | 45.10 | 39.11 | 5.76 |
| P Nannotetrina alata | 45.20 | 40.19 | 0.50 |
| X Tribrachiatus contortus/Tribrachiatus orthostylus | 53.40 | 87.73 | 0.24 |
| T-T Tribrachiatus contortus/Fasciculithus tympaniformis | 53.80 | 43.64 | 7.09 |
| Foraminifer events: |
|
|
|
| T Catapsydrax dissimilis | 17.30 | 33.06 | 1.32 |
| T Paragloborotalia kugleri | 21.00 | 38.19 | 0.90 |
| B Paragloborotalia kugleri | 22.90 | 56.28 | 0.13 |
| T Paraglorborotalia opima opima | 27.10 | 78.18 | 2.79 |
| B Globorotalia mayeri |
|
115.64 | 2.16 |
| T Morozovella acuta | 54.25 | 279.57 | 0.35 |
| Radiolarian events: |
|
|
|
| T Calocycletta costata | 15.00 | 5.44 | 0.49 |
Dorcadospyris dentata  Dorcadospyris alata |
15.68 | 19.70 | 0.75 |
| RN5/4 | 15.70 | 19.70 | 0.75 |
| B Calocycletta costata | 17.03 | 25.62 | 0.31 |
| RN4/3 | 17.03 | 25.62 | 0.31 |
| B Stichocorys wolffii | 17.92 | 33.09 | 0.75 |
| RN3/2 | 17.92 | 33.09 | 0.75 |
| T Theocyrtis annosa | 20.53 | 42.49 | 0.75 |
| RN2/1 | 20.53 | 42.49 | 0.75 |
| B Eucyrtidium diaphanes | 23.94 | 47.60 | 0.88 |
| T Artophormis gracilis | 23.94 | 47.60 | 0.88 |
| B Cyrtocapsella tetrapera | 23.62 | 49.22 | 0.75 |
| RN1/RP22 | 23.62 | 52.36 | 0.75 |
| RP22/21 | 24.60 | 65.89 | 0.58 |
| RP21/20 | 28.80 | 124.83 | 0.75 |
| RP20/19 | 32.80 | 178.16 | 0.84 |
| RP19/18 | 34.90 | 184.00 | 0.78 |
| RP18/17 | 36.40 | 188.53 | 0.75 |
| RP17/16 | 37.70 | 200.53 | 0.75 |
| RP16/15 | 38.80 | 212.11 | 0.75 |
| RP15/14 | 39.50 | 230.54 | 0.75 |
| RP14/13 | 42.80 | 244.03 | 0.75 |
| RP13/12 | 44.50 | 250.03 | 0.75 |
Notes: * = on Cande and Kent (1995) timescale, 900 k.y. subtracted from age estimates for Triquetrorhabdulus carinatus acme and Cyclicargolithus abisectus acme. T = top, B = bottom, P = presence, X = abundance cross-over, T-T = between top Tribrachiatus contortus and top Fasciculithus spp. This table is also available in ASCII. [N1]