Table T4. Paleomagnetic data for igneous samples, Site 597.
Core, section, interval (cm)
Depth (mbsf)
NRM
(A/m)
Inc
(°)
Demag
N
Steps
MAD
(°)
Colatitude
(°)
Group number
Mean
colat
Std
N colat
597B-











2-1, 20 54.49 2.8 53.3 A


56.1



2-1, 28‡ 54.57 1.4 35.0 A 4 20-30 7.4 70.7



2-1, 80‡ 55.17 1.1 49.2 A 4 15-28 1.9 59.9



2-1, 91‡ 55.88 0.5 40.1 A 4 20-30 12.3 67.2



2-1, 95 55.24 2.7 53.6 A


55.9



2-2, 7‡ 55.96 3.5 53.0 A 4 10-25 0.8 56.4



2-2, 48 56.37 2.0 41.0 A


66.5



2-2, 68‡ 56.57 1.7 37.6 A 5 10-28 1.5 68.9



2-2, 100‡ 56.89 0.6 40.5 A 4 10-25 3.0 66.9



2-2, 110 57.02 3.3 44.1 A


64.1



2-2, 131 57.23 2.5 46.1 A


62.5



2-3, 29 57.71 2.5 46.9 A


61.9



2-3, 74‡ 58.16 1.1 47.3 A 3 10-25 2.8 61.5



2-3, 86‡ 58.28 1.4 47.1 A 4 10-25 3.8 61.7



2-3, 106‡ 58.48 0.9 38.5 A 4 5-20 7.5 68.3



2-3, 113 58.56 4.4 57.4 A


52.0



3-1, 3 63.55 2.3 44.7 A


63.7



3-1, 29‡ 63.81 1.7 41.0 A 4 10-25 2.8 66.5



3-1, 51‡ 64.03 0.9 38.9 A 4 10-25 2.9 68.0



3-1, 97‡ 64.49 1.8 39.1 A 4 10-25 2.1 67.9



3-1, 119‡ 64.71 0.7 38.3 A 4 10-25 4.3 68.5



3-1, 132 64.84 2.7 40.5 A


66.9



3-2, 14‡ 65.16 0.8 51.9 A 4 10-25 1.5 57.5



3-2, 23 65.25 2.2 35.3 A


70.5



3-2, 26 65.42 2.5 36.7 A


69.6



597C-











3-1, 18‡ 55.67 3.0 37.4 A 4 10-25 0.7 69.1



3-1, 24 55.73 2.8 45.7 A


62.9



3-1, 48‡ 55.97 0.6 32.3 A 4 10-25 5.6 72.5



3-1, 78‡ 56.27 0.6 Unstable A







3-1, 104‡ 56.53 0.8 47.7 A 3 10-20 4.2 61.2



3-1, 134 56.83 3.1 50.1 A


59.1



3-2, 13‡ 57.12 0.9 Unstable A







3-2, 43 57.42 2.4 36.5 A


69.7



3-2, 81‡ 57.80 1.1 45.4 A 4 10-25 2.8 63.1



3-2, 123‡ 58.22 1.6 33.6 A 4 10-25 2.5 71.6



3-2, 146‡ 58.45 2.6
A







3-3, 5 58.57 2.7 60.1 A


49.0*



3-3, 38‡ 58.90 2.5 32.4 A 4 10-25 0.4




3-3, 52 59.04 2.5 31.2 A


73.2



3-3, 71‡ 59.23 4.2 43.1 A 4 10-25 1.5 64.9



4-1, 55‡ 65.07 1.9 Unstable A







4-1, 60 65.12 4.1 37.9 A


68.7



4-1, 70‡ 65.22 0.6 -58.4† A 4 15-28 2.4 50.9



4-1, 120 65.72 3.3 41.3 A


66.3



4-2, 21 66.72 3.1 48.2 A


60.8 1 62.8 5.5 39
4-2, 55‡ 67.06 1.1 61.7 A 3 10-20 4.3 47.1



4-2, 87‡ 67.38 2.3 -63.3† A 3 28-35 3.4 45.2



4-2, 109‡ 67.60 1.8 Unstable A







4-2, 111 67.13 2.9 55.8 A


53.7



4-3, 27 67.79 3.3 60.4 A


48.6



4-3, 49‡ 68.01 3.7 Unstable A







4-3, 91 68.43 2.7 61.0 A


47.9 2 48.5 3.2 5
4-3, 139‡ 68.91 2.2 Unstable A







4-4, 23 69.25 2.7 44.9 A


63.5



4-4, 62‡ 69.64 5.1 53.5 A 3 10-20 2.9 56.0



4-4, 76 69.78 3.3 48.5 A


60.5



4-4, 127‡ 70.29 2.0 Unstable A







4-5, 23‡ 70.75 2.6 Unstable A







4-5, 26 70.78 2.3 45.3 A


63.2



4-5, 71 71.22 2.3 45.6 A


63.0



4-5, 89‡ 71.41 1.0 Unstable A







4-5, 118‡ 71.70 2.2 Unstable A







4-6, 21 72.22 2.3 65.7 A


42.1*



4-6, 42‡ 72.43 1.3 Unstable A







4-6, 73 72.75 2.0 43.0 A


65.0



4-6, 100‡ 73.01 2.2 53.0 A 4 10-25 1.5 56.4



5-1, 9‡ 73.61 1.2 Unstable A







5-1, 62‡ 74.14 7.3 52.2 A 3 10-20 2.2 57.2



5-1, 129 74.81 2.6 41.0 A


66.5



5-1, 134‡ 74.86 1.2 41.2 A 3 10-20 3.0 66.4



5-2, 63 75.64 4.0 46.1 A


62.5 3 61.8 3.8 11
6-1, 28‡ 82.80 2.3 Unstable A







6-1, 109 83.61 3.6 50.6 A


58.7



6-1, 119‡ 83.71 4.6 56.4 A 3 10-20 0.4 53.0



6-2, 12‡ 84.14 1.5 -34.6† A 3 10-20 1.8 71.0*



6-2, 35‡ 84.37 1.3 47.4 A 4 10-25 4.5 61.5



6-2, 49 84.51 2.3 46.5 A


62.2



6-3, 62 86.14 2.9 49.3 A


59.8



6-3, 55‡ 86.07 2.1 Unstable A







6-3, 78‡ 86.30 1.0 Unstable A







6-3, 105 86.57 0.7 49.2 A 4 25-35 2.1




6-4, 19‡ 87.21 2.4 54.6 A 4 10-25 3.6 54.9 4 58.3 3.7 7
6-4, 53‡ 87.55 1.7 Unstable A







6-4, 74 87.76 3.0 37.8 A


68.8



6-4, 116‡ 88.18 2.1 Unstable A







6-5, 38‡ 88.90 0.6 27.5 A 3 10-20 3.5 75.4



6-5, 58 89.10 3.3 37.9 A


68.7



6-5, 82‡ 89.34 2.3 Unstable A







7-1, 70‡ 92.22 1.8 31.0 A 4 15-28 2.2 73.3 5 71.6 3.3 4
7-1, 128‡ 92.80 5.8 48.1 A 4 10-25 1.6 60.9



7-1, 115 92.67 3.1 50.2 A


59.0



7-2, 7‡ 93.08 2.8 Unstable A







7-2, 16 93.17 3.3 45.6 A


63.0



7-2, 66‡ 93.67 6.7 49.8 A 4 15-20 2.4 59.4



7-2, 117 94.18 3.7 50.6 A


58.7



7-2, 123‡ 94.24 3.9 47.4 A 4 10-25 0.5 61.5



7-3, 10‡ 94.61 4.3 55.2 A 4 10-25 0.7 54.3



7-4, 17‡ 96.19 5.2 58.9 A 4 10-25 2.5 50.3



7-4, 18 96.20 3.0 54.0 A


55.5



7-4, 87 96.89 4.4 50.2 A


59.0



7-4, 91‡ 96.93 6.7 -49.9† A 4 28-35 2.2 59.3



7-4, 111 97.13 2.8 56.0 A


53.5



7-4, 137 97.39 1.9 -41.1† A


66.4



7-4, 141‡ 97.43 2.3 -65.6† A 4 5-20 1.2 42.2*



7-5, 70 98.22 2.2 -76.7† A


25.3* 6 58.5 4.3 13
8-1, 9 100.60 3.2 41.9 A


65.8



8-1, 25‡ 100.76 1.8 39.6 A 4 10-25 2.0 67.5



8-1, 94 101.46 3.2 41.0 A


66.5



8-1, 103‡ 101.54 3.7 40.4 A 4 15-28 1.2 66.9



8-2, 41‡ 102.42 3.5 41.0 A 4 10-25 1.9 66.5



8-2, 50 102.51 2.8 39.1 A


67.9



8-2, 66‡ 102.67 2.2 41.3 A 3 10-20 2.3 66.3



8-2, 137‡ 103.38 2.7 46.1 A 4 15-28 1.5 62.5



8-3, 5 103.57 2.5 36.5 A


69.7



8-3, 44‡ 103.96 1.5 Unstable A







8-3, 130 104.82 2.5 22.1 A


78.5*



8-3, 138‡ 104.90 2.4 30.8 A 5 10-28 2.6 73.4



8-4, 70‡ 105.72 1.8 31.7 A 4 10-25 4.9 72.8



8-4, 102 106.04 2.6 40.2 A


67.1



8-4, 103‡ 106.05 2.9 43.5 A 4 15-28 1.7 64.6



8-4, 137‡ 106.39 1.0 33.1 A 3 20-28 2.3 71.9



8-5, 49 107.01 3.9 34.8 A 4 10-25 0.3 70.8



8-5, 60 107.12 2.7 37.0 A


69.4



8-5, 88‡ 107.40 2.5 Unstable A







8-6, 30‡ 108.32 1.3 32.1 A 4 10-25 2.7 72.6



8-6, 56 108.58 3.3 40.9 A


66.6



8-6, 92‡ 108.94 1.2 -22.7† A 3 20-28 0.7 78.2*



8-6, 135‡ 109.37 2.7 37.2 A 4 10-25 3.7 69.2



8-7, 7‡ 109.57 1.4 41.6 A 3 15-25 1.9 66.1



8-7, 9 109.59 2.9 44.0 A


64.2



8-7, 86‡ 110.36 2.0 28.9 A 4 10-25 6.3 74.6



9-1, 9 109.59 3.8 36.5 A


69.7



9-1, 76‡ 110.27 0.8 Unstable A







9-1, 139 110.90 2.2 34.5 A 4 15-28 1.7




9-1, 141‡ 110.92 1.4 Unstable A







9-1, 142 110.93 3.2 38.9 A


68.0



9-2, 15‡ 111.17 2.8 60.8 A 4 20-35 1.4 48.2*



9-2, 60‡ 111.62 3.3 -46.6† A 5 30-45 0.4 62.1



9-2, 70 111.72 3.4 41.6 A


66.1



9-3, 82‡ 113.33 1.1 -60.6† A 7 28-45 5.7 48.4*



9-3, 88 113.39 2.9 47.3 A


61.5



9-3, 140‡ 113.91 0.9 -51.3† A 4 20-30 5.1 58.0



9-4, 64‡ 114.66 0.6 Unstable A







9-4, 103 115.05 3.1 41.9 A


65.8



9-4, 104‡ 115.06 4.6 33.9 A 4 20-30 6.2 71.4 7 67.5 3.8 30
10-1, 74‡ 119.26 6.5 43.4 A 4 15-25 2.0 64.7



10-1, 112 119.64 2.9 40.1 A


67.2



10-1, 128‡ 119.80 2.9 37.5 A 4 10-25 2.2 69.0



10-2, 39‡ 120.41 2.5 44.5 A 4 10-25 0.6 63.8



10-2, 86‡ 120.88 1.9 52.9 A 4 10-25 3.3 56.5



10-2, 104 121.06 1.9 43.6 A


64.5



10-3, 33‡ 121.85 0.9 Unstable A







10-3, 72‡ 122.24 2.1 42.7 A 4 20-35 1.1 65.2



10-3, 94 122.46 2.0 43.9 A


64.3



10-3, 115‡ 122.67 2.2 31.8 A 4 10-25 4.3 72.8



10-4, 46‡ 123.48 1.0 39.6 A 4 10-25 2.9 67.5



10-4, 91 123.93 1.5 52.6 A


56.8



10-4, 133‡ 124.35 1.1 32.8 A 3 10-20 4.6 72.1



10-5, 52‡ 125.02 1.0 Unstable A







10-5, 84 125.36 1.6 46.4 A


62.3



10-5, 112‡ 125.62 2.1 -49.5† A 4 15-28 0.2 59.7



10-6, 19‡ 126.21 0.5 46.1 A 4 20-30 2.6 62.5



10-6, 36 126.38 1.7 40.5 A


66.9



10-6, 103‡ 127.05 0.9 44.8 A 4 20-30 1.6 63.6



10-7, 30‡ 127.31 1.4 45.5 A 4 15-28 1.7 63.0



10-7, 42 127.93 1.6 42.2 A


65.6



10-7, 84 127.85 1.2 21.0 A 4 15-28 1.0 79.1*



11-1, 32‡ 127.84 0.7 63.8 A 4 20-30 0.6 44.5*



11-1, 79 128.31 1.6 47.1 A


61.7



11-1, 116‡ 128.68 0.4 44.7 A 4 15-28 1.2 63.7



11-2, 46‡ 129.48 0.7 Unstable A







11-2, 103 130.05 1.6 43.8 A


64.4



11-2, 138‡ 130.40 0.7 48.1 A 4 25-40 0.4 60.9



11-3, 13 130.64 1.7 45.6 A


63.0



11-3, 47‡ 130.98 1.8 41.6 A 4 10-25 0.9 66.1



11-3, 93‡ 131.44 1.2 40.4 A 4 15-28 0.9 66.9



11-4, 25‡ 132.26 0.9 23.2 A 4 10-25 3.3 77.9*



11-4, 39‡ 132.40 1.4 -45.2† A 4 25-32 1.2 63.3



11-4, 50‡ 132.51 1.6 47.0 A 4 10-25 1.1 61.8



11-4, 62 132.63 1.7 42.9 A


65.1



11-4, 66‡ 132.67 1.6 32.2 A 4 10-25 0.5 72.5 8 64.6 3.9 30

Notes: NRM = natural remanent magnetization. Inc = inclination of characteristic remanent magnetization determined by principal component analysis. Demag = demagnetization. A = alternating field. N = number of measurements used for principal component analysis. Steps = demagnetization steps used for principal component analysis. MAD = maximum angle of deviation (Kirshvink, 1980). Mean colat = group mean colatitude. Std = standard deviation of group mean colatitude. N colat = number of colatitudes used to calculate group mean. * = datum not used in average colatitude calculations. Group averages are shown at the far right; underscores show the division of groups. † = Sample assumed to be inverted. ‡ = Sample measured in this study.