Table T18. Polarity zonation, Holes U1306A, U1306B, U1306C, and U1306D.
| Polarity chron interpretation |
Age (Ma) |
Interval | Hole U1306A | Hole U1306B | Hole U1306C | Hole U1306D | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Core, section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
Core, section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
Core, section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
Core, section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
|||
| 303-U1306A- | 303-U1306B- | 303-U1306C- | 303-U1306D- | |||||||||||
| C1n (b) Matuyama/Brunhes | 0.78 | Upper | 13H-6, 80 | 114.12 | 122.65 | 13H-3, 70 | 113.2 | 122.54 | 13H-2, 135 | 116.35 | 123.48 | |||
| Lower | 14H-1, 140 | 116.7 | 125.65 | 13H-4, 120 | 115.2 | 124.54 | 13H-3, 45 | 116.95 | 124.08 | |||||
| C1r.1n (t) Jaramillo | 0.99 | Upper | 16H-6, 115 | 142.96 | 153.25 | 16H-3, 25 | 141.25 | 153.64 | ||||||
| Lower | 17H-1, 70 | 144.50 | 156.99 | 16H-3, 105 | 142.05 | 154.44 | ||||||||
| C1r.1n (b) Jaramillo* | 1.07 | Upper | 17H-6, 140 | 151.70 | 164.23 | 17H-6, 60 | 151.91 | 164.60 | 17H-4, 35 | 152.35 | 165.28 | 17H-2, 100 | 153.59 | 165.28 |
| Lower | 18H-2, 75 | 154.55 | 166.90 | 18H-1, 70 | 154.00 | 167.26 | 17H-4, 85 | 152.85 | 165.78 | 17H-3, 20 | 154.29 | 165.98 | ||
| (t) Cobb Mountain | 1.19 | Upper | 19H-3, 30 | 165.07 | 178.62 | 18H-5, 35 | 163.35 | 177.78 | 18H-3, 100 | 165.00 | 178.33 | |||
| Lower | 19H-3, 65 | 165.42 | 178.97 | 18H-6, 35 | 164.85 | 179.28 | 18H-4, 20 | 179.08 | 179.03 | |||||
| (b) Cobb Mountain | 1.215 | Upper | 19H-6, 5 | 169.32 | 182.87 | 19H-1, 130 | 168.1 | 182.57 | 19H-1, 110 | 167.6 | 183.25 | |||
| Lower | 19H-6, 75 | 170.02 | 183.57 | 19H-2, 120 | 169.5 | 183.97 | 19H-2, 55 | 168.55 | 184.20 | |||||
| C2n (t) Olduvai | 1.77 | Upper | 28H-8, 45 | 256.74 | 277.14 | 28H-3, 105 | 256.35 | 277.29 | 27H-2, 25 | 248.25 | 269.62 | |||
| Lower | 29H-1, 70 | 257.50 | 278.87 | 28H-4, 100 | 257.8 | 278.74 | 28H-1, 85 | 256.85 | 278.54 | |||||
| C2n (b) Olduvai | 1.95 | Upper | 32H-1, 15 | 286.45 | 310.4 | 31H-4, 30 | 285.10 | 309.76 | ||||||
| Lower | 32H-3, 80 | 289.04 | 312.99 | 31H-6, 50 | 286.52 | 311.18 | ||||||||
Note: (b) = bottom, (t) = top. * = coincides with prominent sand layer.
Previous | Close | Next | Top of page