Table T1. Paleomagnetic measurements from Hole 1213B basalt samples. (See table notes. Continued on next page.)
Core, section, interval (cm)
Depth (mbsf)
NRM
(A/m)
Incl.
(°)
PCA
type
MAD
(°)
Demag type
Steps
N
MDF (mT)
Bc
(mT)
Bcr
(mT)
Ms
(10–6 Am2)
Mr
(10–6 Am2)
Susceptibility (10–5 SI)
Rejection criteria
Unit 1                              
198-1213B-                              
28R-1, 62 448.42 7.2       TH               0.030 NS
28R-1, 95 448.75 12.8 –10.6 A 1.00 TH 560–580 2           0.047  
28R-1, 107 448.87 9.0 –6.6 F 16.20 AF 20–30 5 3.46 4.60 6.36 28.81 3.49 0.033
28R-2, 33 449.38 10.2 –9.7 A 0.80 TH 550–575 2           0.047  
28R-2, 83 449.88 21.9 –12.5 A 3.20 TH 540–580 3           0.036  
28R-2, 118 450.23 13.3       AF               0.029 NS
28R-3, 46 451.00 16.6 –14.4 F 10.70 AF 20–28 3 5.22 4.36 6.57 28.96 3.01 0.036  
28R-3, 79 451.33 16.0 –4.0 F 11.20 TH 480–580 5           0.050  
28R-3, 102 451.56 10.6 –9.7 F 7.50 TH 500–575 3           0.040  
29R-1, 21 453.01 3.0 12.7 F 11.40 AF 15–23 4 5.75 4.13 6.47 32.18 3.02 0.028 OV
29R-1, 58 453.38 7.7       AF               0.035 NS
30R-1, 39 457.79 9.1 18.3 F 4.80 AF 10–23 5 2.99         0.033 OV
30R-2, 46 459.10 12.4 8.9 F 14.10 AF 18–28 4 5.28 4.06 5.60 27.71 2.83 0.032 OV
30R-2, 95 459.59 6.0       TH               0.041 NS
30R-3, 44 460.53 1.8       AF               0.033 NS
30R-3, 116 461.25 1.4 –13.5* F 26.30 AF 15–35 3 2.50         0.028 MA
30R-4, 16 461.71 5.1 19.0 F 12.10 TH 350–500 3           0.041 OV
Unit 2                              
198-1213B-                              
31R-1, 45 467.45 9.2       TH               0.028 NS
31R-1, 97 467.97 9.5 –11.2 F 9.20 TH 540–580 3           0.030  
31R-2, 36 468.70 32.9 –4.1 F 2.20 AF 22–28 4 3.36         0.032  
31R-2, 100 469.34 11.9 –9.9* A 7.70 TH 550–575 2           0.023 OV
31R-3, 44 470.15 13.9 –8.8 F 1.00 AF 18–25 4 5.68 4.35 6.41 31.26 3.13 0.032  
31R-3, 100 470.71 11.4 –14.8 F 16.70 AF 20–28 4 5.36         0.030  
31R-4, 49 471.68 9.1 –17.3 F 3.30 AF 20–35 4 7.15         0.026  
31R-4, 108 472.27 7.1 16.8 F 2.10 AF 15–20 3 5.40         0.031 OV
31R-5, 16 472.77 6.5 –4.9 A 2.60 TH 450–500 2           0.032  
31R-5, 113 473.74 10.2 –3.5 F 8.40 AF 20–28 4 5.52         0.032  
31R-6, 69 474.68 4.9 49.9 F 14.20 AF 18–25 4 5.40         0.034 OV
31R-6, 134 475.33 6.8 –0.8 A 3.90 TH 450–575 4           0.035  
31R-7, 62 476.05 15.3 –9.8 F 9.90 AF 18–28 5 5.69 3.58 6.27 23.04 2.12 0.031  
31R-7, 88 476.31 7.1 –3.1 F 25.80 TH 480–560 5           0.026 MA
31R-8, 28 476.95 6.5 –11.5 F 19.10 AF 25–33 4 5.40         0.028  
32R-1, 40 477.00 10.9 –26.0* F 22.20 AF 25–30 3 3.14         0.029 MA
32R-1, 91 477.51 11.5       AF               0.035 NS
32R-2, 40 478.50 6.2 5.2 F 1.80 TH 450–550 3           0.042 OV
32R-2, 85 478.95 4.9       AF               0.029 NS
32R-3, 60 480.14 2.4 –12.3 F 13.90 TH 450–520 4           0.061  
32R-3, 78 480.32 3.4 –15.3 A 8.30 TH 550–575 2           0.023  
32R-4, 39 481.28 4.0       TH               0.058 NS
Unit 3                              
198-1213B-                              
32R-4, 138 482.30 4.5       AF               0.026 NS
32R-5, 54 482.89 4.0 –5.7 F 4.80 TH 480–580 6           0.056  
33R-1, 104 486.70 6.8       AF       3.82 5.44 27.99 2.81 0.024 NS
33R-2, 4 487.24 9.1       AF       3.86 5.57 34.02 3.43 0.015 NS
33R-2, 60 487.80 10.2       TH               0.040 NS
33R-3, 34 488.40 8.0       AF               0.028 NS
33R-3, 88 488.94 8.0       AF               0.033 NS
33R-4, 32 489.69 3.8 –2.1 F 6.50 AF 15–30 4 3.36 4.19 6.02 33.27 3.61 0.024  
33R-5, 5 490.48 4.1 –8.5 F 19.90 TH 480–580 6           0.052  
33R-5, 63 491.06 6.0 –11.8 F 11.60 AF 22–28 4 5.37         0.031  
33R-5, 96 491.39 4.0 –13.3 F 8.20 AF 15–23 4 5.87         0.031  
33R-6, 5 491.78 5.3 –7.2 F 11.30 AF 18–25 4 5.75 6.97 13.60 46.17 5.43 0.033  
33R-6, 45 492.18 2.4 –7.5 F 5.70 TH 480–560 5           0.055  

Notes: * = sample inclination not used in mean colatitude calculation. NRM = natural remanent magnetization intensity. Incl. = inclination of characteristic remanence. PCA type = type of principal component analysis, A = anchored to origin, F = free. MAD = maximum angle of deviation. Demag type = type of demagnetization, AF = alternating field, TH = thermal. Demag steps = demagnetization steps (in mT or °C) used for PCA calculation. N = number of measurements used for PCA calculation. MDF = median destructive field, Bc = coercivity field, Bcr = remanent coercivity field. Ms = saturation magnetization, Mr = remanent saturation magnetization. Susceptibility = volume magnetic susceptibility. NS = no stable vector, OV = overprint incompletely removed, MA = MAD > 20°.