Table
T2. Datum levels used for the calculation of the
Site 1126 sedimentation rate.
Datum
type
Datum
level
Age
(Ma)Midpoint
(mbsf)Stratigraphic
error
(m)Fossil
groupDatum
level code
Upper
sample
Depth
(mbsf)
Lower
sample
Depth
(mbsf)
Leg,
hole, core,
section, interval (cm)Leg,
hole, core, section, interval (cm)
T
P.
lacunosa
0.41
13.25
4.77
1
1
182-1126C-1H-CC,
9-11
8.46
182-1126C-2H-CC,
8-11
17.99
T
C.
macintyrei
1.65
51.35
4.71
1
2
182-1126C-5H-CC,
12-15
46.61
182-1126C-6H-CC,
26-29
56.02
T
D.
brouweri
1.95
60.52
4.47
1
3
182-1126C-6H-CC,
26-29
56.02
182-1126C-7H-CC,
13-16
64.96
T
R.
pseudoumbilicus
3.83
66.69
0.16
1
4
182-1126B-8H-3,
1-3
66.51
182-1126B-8H-3,
32-34
66.82
B
Globorotalia
puncticulata
4.20
70.36
5.40
4
5
182-1126C-7H-CC,
13-16
64.96
182-1126C-8H-CC,
43-46
75.76
B
Globorotalia
crassaformis
4.50
77.49
4.53
4
6
182-1126B-8H-CC,
13-16
72.96
182-1126B-9H-CC,
15-18
82.02
T
Globoquadrina
dehiscens
5.60
81.88
0.38
4
7
182-1126C-9H-5,
45-50
81.45
182-1126C-9H-5,
120-125
82.20
T
M.
convallis
7.80
77.52
4.53
1
8
182-1126B-8H-CC,
13-16
72.96
182-1126B-9H-CC,
15-18
82.02
T
C.
miopelagicus
10.80
111.16
7.11
1
9
182-1126B-12H-CC,
15-20
104.00
182-1126B-14H-CC,
12-15
118.23
T
S.
heteromorphus
13.60
120.58
2.32
1
10
182-1126B-14H-CC,
12-15
118.23
182-1126B-15H-CC,
0-4
122.85
B
Orbulina
suturalis
15.10
142.16
5.34
4
11
182-1126B-17H-CC,
13-16
136.82
182-1126B-18H-CC,
21-25
147.49
Base
of C5Cn
16.70
155.70
12
B
Globigerinoides
sicanus
16.40
160.38
0.20
4
13
182-1126B-20H-CC,
6-9
160.28
182-1126B-21X-CC,
18-20
160.48
B
S.
heteromorphus
18.20
172.63
4.28
14
182-1126B-22X-CC,
17-20
168.35
182-1126B-23X-CC,
0-3
176.90
B
Globoconella
praescitula
18.50
178.18
9.83
4
15
182-1126B-22X-CC,
17-20
168.35
182-1126B-24X-CC,
23-26
188.00
Top
of C7n
24.70
217.80
16
T
Globigerina
euapertura
23.80
214.37
8.52
4
17
182-1126B-26X-CC,
15-18
205.85
182-1126B-27X-CC,
28-32
222.88
T
D.
bisectus
23.90
214.40
8.52
1
18
182-1126B-26X-CC,
15-18
205.85
182-1126B-27X-CC,
28-32
222.88
T
C.
altus
26.10
233.15
4.21
1
19
182-1126B-28X-CC,
22-25
228.91
182-1126B-29X-CC,
16-20
237.31
T
Zeaglobigerina
labiacrassata
27.10
251.76
3.06
4
20
182-1126B-31X-CC,
0-1
248.70
182-1126B-32X-CC,
26-28
254.82
T
Chiloguembelina
cubensis
28.50
286.10
4.90
4
21
182-1126D-15R-CC,
29-30
281.19
182-1126D-16R-CC,
38-39
290.98
T
Globigerinatheka
index
34.30
334.40
4.48
4
22
182-1126D-20R-CC,
20-22
329.89
182-1126D-21R-CC,
18-19
338.87
B
I.
recurvus
36.00
345.16
6.29
1
23
182-1126D-21R-CC,
18-19
338.87
182-1126D-22R-CC,
15-17
351.45
T
Acarinina
collactea
37.70
375.27
5.13
4
24
182-1126D-24R-CC,
30-33
370.11
182-1126D-25R-CC,
15-17
380.38
T
C.
solitus
40.40
385.40
5.00
1
25
182-1126D-25R-CC,
15-17
380.38
182-1126D-26R-CC,
23-25
390.38
T
Acarinina
primitiva
39.00
385.40
5.00
4
26
182-1126D-25R-CC,
15-17
380.38
182-1126D-26R-CC,
23-25
390.38
T
Acarinina
bullbrooki
40.50
393.53
3.13
4
27
182-1126D-26R-CC,
23-25
390.38
182-1126D-27R-CC,
0-2
396.63
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 F7. Fossil groups = calcareous nannofossils (1) and planktonic foraminifers (4).