Table
T2. Datum levels used for the calculation of the
Site 1128 sedimentation rate.
Datum
type
Datum
level
Age
(Ma)Midpoint
(mbsf)Stratigraphic
error
(m)Datum
level
codeFossil
groupUpper
sample
Lower
sample
Core,
section,
interval (cm)Depth
(mbsf)
Core,
section, interval (cm)
Depth
(mbsf)
182-1128B-
182-1128B-
T
P.
lacunosa
0.45
2.83
2.83
1
1
1H-CC,
14-17
5.63
1H-1,
0-1
0
Brunhes/Matuyama
0.78
14
2
2H-6,
80
14.00
T
H.
sellii
1.25
10.595
4.935
3
1
1H-CC,
14-17
5.63
2H-CC,
21-24
15.50
T
C.
macintyrei
1.67
16.225
0.695
4
1
2H-CC,
21-24
15.50
3H-2,
18-22
16.88
T
D.
brouweri
1.95
20.07
3.15
5
1
3H-2,
18-22
16.88
3H-CC,
21-24
23.19
T
R.
pseudoumbilicus
3.75
26.525
3.305
6
1
3H-CC,
21-24
23.19
4H-4,
58-63
29.78
T
G.
margaritae
3.58
26.525
3.305
7
4
3H-CC,
21-24
23.19
4H-4,
58-63
29.78
T
A.
tricorniculatus
4
35.385
1.365
8
1
4H-CC,
14-17
33.99
5H-2,
101-105
36.71
T
Z.
nepenthes
4.2
40.235
3.485
9
4
5H-2,
101-105
36.71
5H-CC,
11-13
43.70
B
D.
asymmetricus
5.02
45.69
1.99
10
1
5H-CC,
11-13
43.70
6H-3,
98-103
47.68
T
G.
dehiscens
5.8
50.655
2.925
11
4
6H-3,
98-103
47.68
6H-CC,
19-21
53.56
T
C.
altus
26.1
66.82
4.21
12
1
7H-CC,
21-24
62.58
8H-6,
79-83
70.99
T
C10n
28.28
75.20
13
9H-2,
150
75.20
B
C10n
28.745
90.00
14
9H-6,
80
90.00
T
C11n
29.4
100.80
15
12H-1,
10
100.80
B
C11n
30.1
108.20
16
12H-5,
150
108.20
T
C12n
30.48
133.70
17
15H-4,
41
133.70
T
I.
recurvus
31.8
135.25
2.54
18
1
15H-3,
50-51
132.70
15H-CC,
11-14
137.76
B
C12n
30.94
137.50
19
15H-6,
24
137.50
T
R.
umbilicus
32.3
142.73
4.94
20
1
15H-CC,
11-14
137.76
16X-CC,
50-53
147.64
T
D.
saipanensis
34.2
251.04
3.62
21
1
27X-CC,
28-31
247.42
28X-CC,
32-35
254.66
182-1128D-
182-1128D-
B
I.
recurvus
36
259.11
4.83
22
1
3R-CC,
24-27
254.28
4R-CC,
11-12
263.94
T
C.
solitus
40.4
422.17
5.175
23
1
20R-CC,
13-16
416.97
21R-CC,
20-23
427.32
Notes: T = top of taxon stratigraphic range, B = bottom of taxon stratigraphic range. Midpoint = the middle depth between the sample where the taxon occurs and the adjacent sample where it does not occur. Stratigraphic error = one-half the distance between the sample where the taxon occurs and the adjacent sample where it does not occur. Fossil groups = calcareous nannofossils (1) and planktonic foraminifers (4).