Table T13. Depths and ages of magnetic chrons and subchrons identified, Site 1174.
| Depth (mbsf) | Polarity | Chron | Subchron | Age (Ma) |
||
|---|---|---|---|---|---|---|
|
Top
|
Bottom
|
|||||
| 0.00 | 544.70 | N | Brunhes | 0.00 | ||
| 544.70 | 686.00 | R | Matuyama | 0.78 | ||
| 686.00 | 697.85 | N | Gauss | 2.58 | ||
| 697.85 | 702.45 | R | Kaena | 3.04 | ||
| 702.45 | 705.15 | N | C2An.2n | 3.11 | ||
| 705.15 | 710.35 | R | Mammoth | 3.22 | ||
| 710.35 | 727.85 | N | C2An.3n | 3.33 | ||
| 727.85 | 731.70 | R | Gilbert | 3.58 | ||
| 731.70 | 732.70 | N | Cochiti (C3n.1n) ? | 4.18 | ||
| 732.70 | 737.75 | R | C3n.2r ? | 4.29 | ||
| 737.75 | 738.55 | N | Nunivak (C3n.2n) ? | 4.48 | ||
| 738.55 | 738.95 | N | ? | |||
| 738.95 | 751.80 | R | ? | |||
| 751.80 | 761.55 | N | Nunivak (C3n.2n) ? | 4.48 | ||
| 761.55 | 767.25 | R | C3n.3r ? | 4.62 | ||
| 767.25 | 774.99 | N | Sidufjall (C3n.3n) | 4.80 | ||
| 774.99 | 784.50 | R | C3n.4r ? | 4.89 | ||
| 784.50 | 793.92 | N | Thvera (3n.4n) ? | 4.98 | ||
| 793.92 | 802.12 | R | C3n.5r ? | 5.23 | ||
| 802.12 | 807.25 | N | C3A | C3An.1n | 5.89 | |
| 807.25 | 812.55 | R | C3A.1r | 6.14 | ||
| 812.55 | 814.21 | N | C3An.2n | 6.27 | ||
| 814.21 | 832.10 | R | C3Ar | 6.57 | ||
| 832.10 | 841.55 | N | C3B | C3Bn | 6.94 | |
| 841.55 | 842.95 | R | C3Br.1r | 7.09 | ||
| 842.95 | 843.80 | N | C3Br.1n | 7.14 | ||
| 843.80 | 860.95 | R | C3Br.2r | 7.17 | ||
| 860.95 | 862.70 | N | C4 | C4n.1n | 7.43 | |
| 862.70 | 863.24 | R | C4n.1r | 7.56 | ||
| 863.24 | 875.90 | N | C4n.2n | 7.65 | ||
| 875.90 | 880.40 | R | C4r.1r | 8.07 | ||
| 880.40 | 881.75 | N | C4r.2n | 8.23 | ||
| 881.75 | 890.15 | R | C4r.2r | 8.26 | ||
| 890.15 | 892.20 | N | C4An | 8.70 | ||
| 892.20 | 893.59 | N | C4Ar.1n | 9.23 | ||
| 893.59 | 899.85 | R | C4Ar.2n | 9.31 | ||
| 899.85 | 901.40 | R | C4Ar.3r | 9.64 | ||
| 901.40 | 906.35 | N | C5 | C5n.1n | 9.74 | |
| 906.35 | 906.90 | R | C5n.1r | 9.88 | ||
| 906.90 | 947.15 | N | C5n.2n | 9.92 | ||
| 947.15 | 950.00 | R | C5r.1r | 10.95 | ||
| 950.00 | 954.55 | N | C5r.1n | 11.05 | ||
| 954.55 | 956.90 | N | ? | ? | ||
| 956.90 | 1033.60 | N | C5r.2r | 11.10 | ||
| 1033.60 | 1052.65 | N | C5A? | C5An.1n | 11.94 | |
| 1052.65 | N | C5AAn | 12.99 | |||
Notes: N = normal, R = reversed. ? = uncertain subchron boundary.