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Table T20. Polarity boundaries, Site U1389.
|
Polarity boundary
|
Age
(Ma)
|
Depth (mbsf)
|
|
Hole U1389A
|
Hole U1389C
|
Hole U1389E
|
|
Brunhes/Matuyama
|
0.781
|
Above 327.6
|
Above 327.2
|
|
|
T Olduvai
|
1.778
|
|
|
542.0
|
|
B Olduvai
|
1.945
|
|
|
592.0
|
|
T Reunion
|
2.128
|
|
|
636.4
|
|
B Reunion
|
2.148
|
|
|
636.8
|
|
Matuyama/Gauss
|
2.581
|
|
|
696.0
|
|
T Kaena
|
3.032
|
|
|
757.7
|
|
B Kaena
|
3.116
|
|
|
758.3
|
|
T Mammoth
|
3.207
|
|
|
858.5
|
|
B Mammoth
|
3.330
|
|
|
875.5
|
|
Gauss/Gilbert
|
3.596
|
|
|
953.4
|
Bold = well-defined boundary. T = top, B = bottom.
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