|
Polarity
Subchron |
Reversal
type |
Age
(Ma) |
Range
(mbsf) |
Best estimate (mbsf)
|
Best estimate core, section, interval (cm)
|
Measurement type
|
Sedimentation rate (mm/yr)
|
Comment
|
|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
|
178- |
|
|
|
| 0 | N | 0 | 0.00-0.00 | 0.00 | Top of 1101A-1H |
|
|
(1) |
| C1n (o) |
R N |
0.78 | 55.04-55.06 | 55.05 | 1101A-7H-5, 135 | U-channel | 70.58 | * |
| C1r.1n (t) |
NR |
0.99 | 70.96-71.33 | 71.15 | 1101A-9H-3, 145 | U-channel | 76.64 | * |
| C1r.1n (o) |
RN |
1.07 | 75.95-76.29 | 76.12 | Between 1101A-9H and 10H | U-channel | 62.19 | * |
| C1r.2r-1n (t) |
NR |
1.201 | 80.96-82.26 | 81.61 | 1101A-10H-4, 46 | U-channel | 41.91 | † * |
| C1r.2r-1n (t) |
RN |
1.211 | 82.52-82.54 | 82.53 | 1101A-10H-5, 33 | U-channel | 92.00 | † * |
| C2n (t) |
NR |
1.77 | 121.24-121.26 | 121.25 | 1101A-14H-5, 105 | U-channel | 64.47 | * |
| C2n (o) |
RN |
1.95 | 126.95-126.97 | 126.96 | 1101A-15H-3, 26 | U-channel | 31.72 | * |
| C2r.1n (t) |
NR |
2.14 | 136.10-136.30 | 136.20 | 1101A-16H-2, 150 | Split-core | 48.63 | † * |
| C2r.1n (o) |
RN |
2.15 | 136.60-136.65 | 136.63 | 1101A-16H-3, 43 | Split-core | 42.50 | † * |
| C2An.1n (t) |
NR |
2.581 | 165.95-166.00 | 165.98 | 1101A-19X-3, 138 | Split-core | 61.83 | ** |
| C2An.1n (o) |
RN |
3.04 | 209.35-209.40 | 209.38 | 1101A-24X-1, 128 | Split-core | 94.55 | * |
Notes: Ages for chrons are from Cande and Kent (1995). (o) = onset, (t) = termination of a polarity chron. NR = a reversal where the polarity of the field changed from normal to reversed, RN = a reversal where the polarity of the field changed from reversed to normal. * = the reversal boundary is the same as identified by Shipboard Scientific Party (1999c), but the location of the boundary has been adjusted slightly. † = identification of chron and reversal boundaries is speculative; therefore, these reversal boundaries are not used in the sedimentation rate plots. ** = The reversal boundary location is identical to that given by Shipboard Scientific Party (1999c). Comments: (1) = the mudline is taken as 0-Ma sediment.