Table
T2. Datum levels used for the calculation of the
Site 1127 sedimentation rate.
Datum
typeDatum
level
Age
(Ma)Midpoint
(mbsf)Stratigraphic
error (m)Fossil
groupDatum
level
codeUpper
sample
Lower
sample
Core,
section,
interval (cm)Depth
(mbsf)
Core,
section,
interval (cm)Depth
(mbsf)
182-1127B-
182-1127B-
B
Emiliania
huxleyi
0.25
19.33
3.99
1
1
2H-CC,
12-15
15.34
3H-CC,
17-20
23.32
T
Pseudoemiliania
lacunosa
0.45
158.75
3.52
1
2
17X-CC,
23-26
155.20
18X-CC,
29-32
162.24
T
Globorotalia
tosaensis
0.65
234.78
4.95
4
3
25X-CC,
29-31
229.81
26X-CC,
67-70
239.70
T
Reticulofenestra
asanoi
0.88
284.8
4.975
1
4
30X-CC,
13-16
279.80
31X-CC,
36-39
289.75
B
Reticulofenestra
asanoi
1.08
313.33
5.325
1
5
33X-CC,
29-32
308.00
34X-CC,
43-46
318.65
Brunhes/Matuyama
0.78
343.4
A
T
Calcidiscus
macintyrei
1.67
352.32
4.85
1
6
37X-CC,
36-39
347.47
38X-CC,
31-34
357.16
T
Jaramillo
0.99
380.7
B
B
Jaramillo
1.07
394
3.5
C
42X-5,
20-21
393
42X-5,
120-121
395
B
Globorotalia
truncatulinoides
2
422.71
1.425
4
7
45X-5,
89-94
421.29
45X-CC,
28-30
424.14
B
Globorotalia
inflata
2.09
463.28
3.66
4
8
49X-CC,
34-37
459.62
50X-3,
144-146
466.94
T
Zeaglobigerina
nepenthes
4.2
469.92
2.36
4
9
50X-4,
54-56
467.54
50X-CC,
32-35
472.25
T
Globquadrina
dehiscens
5.8
483.97
4
4
10
51X-CC,
30-33
479.94
52X-CC,
20-23
487.94
T
Sphenolithus
heteromorphus
13.6
504.43
3.32
1
11
54X-CC,
0-1
501.10
55X-CC,
5-6
507.75
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. Datum level code = the number assigned to the datum level on Figure F6. Fossil groups = calcareous nannofossils (1) and planktonic foraminifers (4).