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Table 2 Polarity boundaries identified in collected u-channel samples from Holes U1424A and U1424B

From: Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea)

Polarity boundaries Age (Ma) Hole-core-section Center position (cm) Uncertainty (cm) Depth CSF-A (m) Depth CCSF-A (m)
(B) C1n (Brunhes/Matuyama) 0.781 B-4H-2 112 ± 5 24.32 27.54
(T) C1r.1n (Jaramillo) 0.988 A-4H-4 132 ± 8 31.62 34.92
(B) C1r.1n (Jaramillo) 1.072 A-4H-6 96 ± 19 34.26 37.56
   B-5H-3 52 ± 18 34.18 37.58
(T) C1r.2n (Cobb Mountain) 1.173 B-5H-5 54 ± 5 37.20 40.60
(B) C1r.2n (Cobb Mountain) 1.185 B-5H-5 76 ± 5 37.42 40.82
(T) C2n (Olduvai) 1.778 B-7H-3 126 ± 5 54.46 59.69
(B) C2n (Olduvai) 1.945 B-7H-6 98 ± 5 58.68 63.91
(T) C2r.1n (Reunion) 2.128 A-7H-6 103 ± 7 62.83 67.96
   B-8H-2 67 ± 10 61.87 67.93
(B) C2r.1n (Reunion) 2.148 A-7H-6 137 ± 7 63.17 68.30
   B-8H-2 118 ± 10 62.38 68.44
(T) C2An.1n (Matuyama/Gauss) 2.581 B-9H-4 100 ± 12 74.66 81.30
(T) C2An.1r (Kaena) 3.032 A-10H-5 115 ± 15 89.95 95.81
(B) C2An.1r (Kaena) 3.116 B-11H-2 110 ± 10 90.80 98.44
(T) C2An.2r (Mammoth) 3.207 A-11H-3 67 ± 20 95.35 101.87
   B-11H-5 7 ± 5 94.27 101.91
(B) C2An.2r (Mammoth) 3.33 A-11H-5 50 ± 25 98.18 104.70
(T) C2Ar (Gauss/Gilbert) 3.596 A-12H-6 26 ± 5 109.62 115.67
   B-13H-2 8 ± 5 107.51 115.64
(T) C3n.1n (Cochiti) 4.187 A-16H-1 110 ± 5 140.90 149.06
   B-16H-5 45 ± 15 142.15 149.10
(B) C3n.1n (Cochiti) 4.3 A-16H-5 33 ± 20 146.05 154.21
(T) C3n.2n (Nunivak) 4.493 B-17H-5 55 ± 10 151.75 159.34
(B) C3n.2n (Nunivak) 4.631 A-17H-3 92 ± 25 153.22 162.10
(T) C3n.3n (Sidufjall) 4.799 A-17H-5 150 ± 20 156.80 165.68
  1. (B) = bottom; (T) = top. In bold are polarity boundaries that are defined with more confidence. Reversal ages are based on GPTS2012 (Gradstein et al. 2012)