Table T13. Preliminary positions of polarity chron boundaries at Site 1089.
| Interpreted boundary |
Sample | Depth | Depth | Age (Ma) |
Comment | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Top (cm) |
Bottom (cm) |
Top (mbsf) |
Bottom (mbsf) |
Mean (mbsf) |
Top (mbsf) |
Bottom (mbsf) |
Mean (mbsf) |
|||||
| 177-1089B- | 177-1089B- | |||||||||||
| C1n (Brunhes) | 12H-4, 65 | 13H-4, 20 | 105 | 114 | 110 | 116.26 | 125.26 | 121.26 | 0.78 | No clear transition | ||
| C1r.1n (Jaramillo) bottom | 17H-3, 130 | 17H-5, 30 | 151.6 | 153.6 | 152.6 | 162.86 | 154.86 | 153.86 | 1.07 | |||
| C2n (Olduvai) top | 23H-7, 50 | 24H-2, 50 | 213.8 | 215.8 | 214.8 | 228.9 | 230.9 | 229.9 | 1.77 | |||
| C2n (Olduvai) bottom | 25H-2, 65 | 25H-3, 135 | 225.45 | 227.65 | 226.5 | 240.55 | 242.75 | 241.6 | 1.95 | |||