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Table 2. Polarity chron boundaries at Site 907.



Hole 907A (Leg 151)
Hole 907B
Hole 907C
Polarity chron boundary Age Depth
(mbsf)
Depth
(mcd)

Depth
(mbsf)
Depth
(mcd)

Depth
(mbsf)
Depth
(mcd)











Brunhes/Mat.

0.780

16.10

16.13*


13.32

14.89


14.03

14.89

Top Jaramillo

0.990

17.00

18.50


17.05

18.62


16.00

18.19

Base Jaramillo

1.070

19.10

20.60


18.53

20.10


18.43

20.62

Top Cobb

1.200







21.13

23.32

Base Cobb

1.200







21.45

23.64

Top Olduvai

1.770

33.80

36.53


34.48

36.46


34.68

36.77

Base Olduvai

1.950




38.47

40.45


37.93

40.02

Top Reunion

2.130




40.57

42.55


41.67

43.76

Base Reunion

2.140




41.50

44.75


41.83

43.92

Mat./Gauss

2.580

49.00

54.79


47.85

54.79


53.27

54.88

Top Kaena

3.040

57.90

64.63







Base Kaena

3.110

59.30

66.03







Top Mammoth

3.220

61.20

67.93







Base Mammoth

3.330




61.63

70.36




Gauss/Gilbert

3.580

66.80

74.54


65.70

74.43


67.18

75.30

Top Cochiti

4.180

70.50

78.24


68.78

77.51


69.25

77.37





















Base Gilbert

5.890

89.50

97.64


88.35

97.65


88.63

97.68

Base 3An.1n

6.140

92.25

100.39





91.75

101.33

Top 3An.2n

6.270

93.30

101.72





92.37

101.95

Top 3Ar

6.570

96.40

104.82





96.30

105.88





















Top 5n.2n

9.920

111.80

120.89


110.87

121.38


110.70

120.81

Base 5n.2n

10.950

129.70

140.20


128.13

140.12


128.67

140.15

Base 5r

11.940

141.85

154.11


141.27

154.02


140.63

153.94





















Base 5An.1n

12.080









Top 5An.2n

12.180









Base 5An.2n

12.400

145.65

157.91


146.32

159.84


144.73

158.04

Base 5Ar

12.990

159.60

172.54


160.87

176.07


160.83

175.89

Base 5AAn

13.139

165.50

180.18


165.37

181.84


166.67

181.73

Top 5ABn

13.302

168.00

182.68


167.49

186.96


167.65

184.43

Base 5ABn

13.510

181.35

199.31


181.32

199.37


182.07

199.55

Top 5ACn

13.703

187.85

205.81


188.29

206.70


189.20

207.95

Note: Mat. = Matuyama, * = affected by dropstone.

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