|
Geomagnetic
reversal boundary |
Site 1237
range (mcd) |
Site 1237
this study |
ATNTS2004
|
SCHPS95
|
CK95
|
|
|---|---|---|---|---|---|---|
| Reunion (Base) | Top | 41.35 | 2142 | 2148 | 2150 | |
| Mean | 41.81 | 2166 | ||||
| Base | 42.36 | 2198 | ||||
| Gauss/Matuyama | Top | 47.82 | 2583 | 2581 | 2600 | 2600 |
| Mean | 47.93 | 2591 | ||||
| Base | 48.04 | 2600 | ||||
| Kaena (Top) | Top* | 56.61 | 3061 | 3032 | 3046 | 3040 |
| Mean* | 56.70 | 3065 | ||||
| Base* | 56.80 | 3070 | ||||
| Kaena (Base) | Top* | 57.60 | 3111 | 3116 | 3131 | 3110 |
| Mean* | 57.73 | 3119 | ||||
| Base* | 57.86 | 3126 | ||||
| Mammoth (Top) | Top* | 58.80 | 3197 | 3207 | 3233 | 3220 |
| Mean* | 58.85 | 3201 | ||||
| Base* | 58.99 | 3211 | ||||
| Mammoth (Base) | Top | 60.60 | 3310 | 3330 | 3331 | 3330 |
| Mean | 60.94 | 3331 | ||||
| Base | 61.28 | 3351 | ||||
| Gilbert/Gauss | Top | 65.53 | 3582 | 3596 | 3594 | 3580 |
| Mean | 65.92 | 3611 | ||||
| Base | 66.31 | 3627 | ||||
| Cochiti (Top) | Top | 75.13 | 4162 | 4187 | 4199 | 4180 |
| Mean | 75.48 | 4184 | ||||
| Base | 75.83 | 4201 | ||||
| Cochiti (Base) | Top | 77.37 | 4302 | 4300 | 4316 | 4290 |
| Mean | 77.57 | 4314 | ||||
| Base | 77.76 | 4325 | ||||
| Nunivak (Top) | Top | 81.00 | 4487 | 4493 | 4479 | 4480 |
| Mean | 81.17 | 4495 | ||||
| Base | 81.34 | 4503 | ||||
| Nunivak (Base) | Top | 83.68 | 4616 | 4631 | 4623 | 4620 |
| Mean | 83.86 | 4624 | ||||
| Base | 84.04 | 4633 | ||||
| Sidufjall (Top) | Top | 87.37 | 4787 | 4799 | 4781 | 4800 |
| Mean | 87.65 | 4802 | ||||
| Base | 87.93 | 4817 | ||||
| Sidufjall (Base) | Top* | 88.77 | 4860 | 4896 | 4878 | 4890 |
| Mean* | 89.07 | 4876 | ||||
| Base | 89.27 | 4888 | ||||
| Thvera (Top) | Top | 90.83 | 4956 | 4997 | 4977 | 4980 |
| Mean | 91.50 | 4983 | ||||
| Base | 92.17 | 5008 | ||||
| Thvera (Base) | Top | 96.64 | 5211 | 5235 | 5232 | 5230 |
| Mean | 97.32 | 5242 | ||||
| Base | 98.00 | 5272 | ||||
Notes: * = depth ranges of reversals at Site 1237 are different from those published in Mix, Tiedemann, Blum, et al. (2003). Ages according to ATNTS2004 (Lourens et al., 2004), SCHPS95 (Shackleton et al., 1995), CK95 (Cande and Kent, 1995), and this study. The reversals were determined at sections that did not belong to the mcd splice. Using core logging data, we more precisely matched these sections to the mcd splice.