Table
T2. Datum levels used for the calculation of the
Site 1129 sedimentation rate.
Datum
typeDatum
level
Age
(Ma)Midpoint
(mbsf)Stratigraphic
error
(m)Fossil
groupUpper
sample
Lower
sample
Core,
section,
interval (cm)Depth
(mbsf)
Core,
section,
interval (cm)Depth
(mbsf)
182-1129C-
182-1129C-
T
P.
lacunosa
0.45
163.99
4.90
1
17H-CC,
13-16
159.05
18H-CC,
8-12
168.85
Brunhes/Matuyama
0.78
343.00
4.20
37X-3
T
G.
tosaensis
0.65
341.68
5.82
4
36X-CC,
27-30
335.83
37X-CC,
24-27
347.47
B
G.
truncatulinoides
2
423.47
9.47
4
45X-CC,
6-9
413.86
46X-CC,
53-56
432.93
182-1129D-
182-1129D-
Top
of Jaramillo
0.99
397.75
4.85
5R
392
6R
402
Bottom
of Jaramillo
1.07
440.80
8.90
9R
435
10R
445
Top
of Olduvai
1.77
540.38
0.67
20R-3
B
G.
crassaformis
4.5
556.19
1.49
4
21R-CC,
31-34
554.70
22R-CC,
16-18
557.68
B
G.
puncticulata
4.5
556.19
1.49
4
21R-CC,
31-34
554.70
22R-CC,
16-18
557.68
T
S.
heteromorphus
13.6
556.19
1.49
1
21R-CC,
31-34
554.70
22R-CC,
16-18
557.68
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 these two samples. Fossil groups = calcareous nannofossils (1) and planktonic foraminifers (4).