Table T9. Control
points used to calculate sedimentation rates for Holes 1089A, 1089B, 1089C, and 1089D.
Code |
|
Depth range of stratigraphic datums |
|
Age
(Ma) |
Sedimetation rate
(m/m.y.) |
Top |
|
Bottom |
|
Mean |
Event/Zone/Chron |
Core, section,
interval (cm) |
Depth
(mbsf) |
Depth
(mcd) |
Core, section,
interval (cm) |
Depth
(mbsf) |
Depth
(mcd) |
Depth
(mbsf) |
Depth
(mcd) |
|
|
|
|
|
|
|
|
|
|
|
|
|
~128 |
|
|
177- |
|
|
|
177- |
|
|
|
|
|
|
~128 |
DIAT/REFL |
MID MIS 5.3 |
1089B |
|
|
|
1089B |
|
|
|
17.56 |
23.00 |
0.099 |
~128 |
DIAT/REFL |
MID MIS 5.5 |
1089B |
|
|
|
1089B |
|
|
|
23.50 |
27.08 |
0.122 |
~128 |
DIAT/REFL |
MID MIS 6.5 |
1089C |
|
|
|
1089C |
|
|
|
26.50 |
30.08 |
0.171 |
~128 |
DIAT/REFL |
MID MIS 7.1 |
1089B |
|
|
|
1089B |
|
|
|
31.10 |
35.50 |
0.194 |
~128 |
DIAT/REFL |
MID MIS 7.5 |
1089B |
|
|
|
1089B |
|
|
|
35.45 |
39.20 |
0.240 |
~128 |
|
|
|
|
|
|
|
|
|
|
|
|
|
~128 |
CN |
FO E. huxleyi |
1089B-5H-2, 30-30 |
35.10 |
39.56 |
|
1089B-5H-2, 130-130 |
36.10 |
40.56 |
|
35.60 |
40.06 |
0.260 |
~128 |
DIAT/REFL |
MID MIS 9.3 |
1089B |
|
|
|
1089B |
|
|
|
46.00 |
52.20 |
0.331 |
~128 |
DIAT/REFL |
MID MIS 11.1 |
1089B |
|
|
|
1089B |
|
|
|
52.40 |
55.90 |
0.368 |
~128 |
DIAT/REFL |
MID MIS 11.3 |
1089B |
|
|
|
1089B |
|
|
|
58.35 |
63.50 |
0.405 |
~128 |
CN |
LO P. lacunosa |
1089A-7H-CC, 51-56 |
63.40 |
67.54 |
|
1089A-8H-1, 30-30 |
64.60 |
69.37 |
|
63.90 |
68.46 |
0.460 |
~128 |
|
|
|
|
|
|
|
|
|
|
|
|
|
~128 |
DIAT |
TOP A. ingens Subzone c, MIS 16.3 |
1089B-9H-CC, 15-20 |
80.20 |
89.61 |
|
1089C-10H-3, 60-60 |
84.00 |
90.49 |
|
82.10 |
90.05 |
0.640 |
~128 |
MAG |
BOT C1n (Brunhes) |
1089B-12H-4, 65-65 |
105.00 |
116.26 |
|
1089B-13H-4, 20-20 |
114.00 |
125.26 |
|
109.50 |
120.76 |
0.780 |
|
CN |
RE Geph. medium (4-5.5 µm) |
1089B-17H-2, 130-130 |
149.10 |
160.36 |
|
1089B-17H-2, 120-120 |
150.00 |
161.26 |
|
149.55 |
160.81 |
0.960 |
|
DIAT |
TOP A. ingens Subzone b |
1089B-16H-CC, 12-17 |
146.40 |
157.66 |
|
1089B-17H-CC, 18-23 |
155.30 |
166.54 |
|
86.65 |
162.10 |
1.070 |
~110 |
MAG |
BOT C1r.1n (Jaramillo) |
1089B-17H-3, 130-130 |
151.60 |
162.86 |
|
1089B-17H-5, 30-30 |
153.60 |
164.86 |
|
152.60 |
163.86 |
1.070 |
~110 |
|
|
|
|
|
|
|
|
|
|
|
|
|
~110 |
CN |
FO R. asanoi |
1089A-18H-3, 130-130 |
163.60 |
171.56 |
|
1089A-18H-4, 30-30 |
164.10 |
172.05 |
|
163.85 |
171.80 |
1.080 |
~110 |
CN |
LO Gephyrocapsa large (>5.5 µm)
|
1089B-18H-CC, 13-18 |
165.39 |
176.65 |
|
1089A-19H-1, 120-120 |
170.00 |
178.01 |
|
167.69 |
177.33 |
1.240 |
~110 |
DIAT |
TOP A. ingens Subzone a* |
1089C-21H-CC, 19-24 |
185.20 |
197.83 |
|
1089B-20H-CC, 0-10 |
190.80 |
202.05 |
|
95.40 |
199.94 |
1.300 |
~110 |
CN |
FO Gephyrocapsa large (>5.5 µm)
|
1089B-20H-6, 30-30 |
182.88 |
195.56 |
|
1089B-20H-CC, 0-10 |
185.15 |
197.83 |
|
184.02 |
196.70 |
1.460 |
~110 |
CN |
LO C. macintyrei |
1089A-23H-1, 120-120 |
208.00 |
220.30 |
|
1089A-23H-2, 30-30 |
208.60 |
220.90 |
|
208.30 |
220.60 |
1.600 |
~84 |
|
|
|
|
|
|
|
|
|
|
|
|
|
~84 |
CN |
FO Gephyrocapsa medium (4-5 µm) |
1089A-23H-4, 30-30 |
211.60 |
223.90 |
|
1089A-23H-4, 120-120 |
212.50 |
224.80 |
|
212.05 |
224.35 |
1.690 |
~84 |
MAG |
TOP C2n (Olduvai) |
1089B-23H-7, 50-50 |
213.80 |
228.90 |
|
1089B-24H-2, 50-50 |
215.80 |
230.90 |
|
214.80 |
229.90 |
1.770 |
~84 |
DIAT |
TOP P. barboi Zone |
1089B-23H-CC, 0-8 |
213.70 |
228.75 |
|
1089B-24H-CC, 23-28 |
223.40 |
238.53 |
|
123.20 |
233.64 |
1.800 |
~84 |
CN |
LO D. brouweri |
1089B-24H-6, 30-30 |
221.60 |
236.70 |
|
1089B-24H-CC, 23-28 |
223.43 |
238.53 |
|
222.52 |
237.62 |
1.950 |
~84 |
MAG |
BOT C2n (Olduvai) |
1089B-25H-2, 65-65 |
225.45 |
240.55 |
|
1089B-25H-3, 135-135 |
227.65 |
242.75 |
|
226.55 |
241.65 |
1.950 |
~84 |
DIAT |
TOP T. kolbei/F. matuyama Zone |
1089B-24H-CC, 23-28 |
223.40 |
238.53 |
|
1089B-25H-CC, 14-19 |
232.80 |
247.88 |
|
228.10 |
243.21 |
2.000 |
~84 |
Notes: Code abbreviations: DIAT =
diatom, REFL = reflectance, CN = calcareous nannofossil, MAG = magnetic polarity. Event
abbreviations: FO = first occurrence, LO = last occurrence, RE = reentrance, TOP = top of
interval, MID = middle of interval, BOT = bottom of interval. Age assignment of marine
isotope stages (MIS) according to Imbrie et al. (1984). * = datum not included in
sedimentation rate calculations. Sedimentation rates at 1.07 Ma were calculated by
averaging the mean depth range between the TOP of A. ingens and the BOT of C1r.1n
(Jaramillo Subchron). Shaded area indicates a disturbed interval. This table is also
available in ASCII format in the TABLES
directory.