Table T15. Biostratigraphic events identified at Site 1123, using shipboard analysis data.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
Events
Group
Figure
29
Age
(Ma)
Sample
Depth
(mbsf)
Depth
(mcd)
FO Globorotalia hirsuta
F
~0.45
1123B-1H-1, 18-20 cm
0.18
0.18
Bottom acme of Emiliania huxleyi
N
0.09
1123A-1H-2, 145 cm
1.57
1.57
FO Emiliania huxleyi
N
0.24
1123A-1H-4, 75 cm
5.25
5.25
Base of acme Hemidiscus karstenii
D
26
0.42
1123B-2H-CC
12.85
12.11
LO Globorotalia puncticuloides
F
~0.6
1123B-2H-CC
15.60
15.36
LCO Globorotalia puncticuloides
F
~0.7
1123A-3H-CC
23.31
23.07
LO Stylatractus universus
R
0.46
1123A-3H-CC
23.31
23.07
LO Pseudoumbilica lacunosa
N
31
0.42
1123A-3H-CC
23.31
23.07
LO Nitzschia reinholdii
D
27
0.65
1123B-3H-CC
22.74
24.46
FO Globorotalia truncatulinoides
F
~0.8
1123A-5H-CC
44.29
44.15
FO Theocorythium trachelium
R
1.6-1.7
1123A-7H-CC
63.15
65.85
LO Eucyrtidium calvertense
R
1.92
1123A-7H-CC
63.15
65.85
FO Gephyrocapsa (medium)
N
1.67
1123A-7H-CC
63.15
66.25
LO Calcidiscus macintyrei
N
1.6
1123A-8H-CC
72.07
75.87
FO Globorotalia crassula
F
1
2.6
1123A-9H-CC
72.00
75.80
LO Globorotalia crassaformis (dextral)
F
2
2.1
1123A-9H-CC
72.00
75.80
FO Globorotalia tosaensis
F
3.2
1123A-8H-CC
72.07
75.87
LO Theocorythium vetulum
R
1.2-1.3
1123A-8H-CC
72.07
75.87
LO Thalassiosira convexa
D
2.1
1123B-10H-CC
89.19
94.01
FO Globorotalia crassaformis (dextral)
F
3
3.0
1123A-10H-CC
91.93
97.83
LO Lamprocyrtis heteroporos
R
1.8
1123A-10H-CC
91.93
97.83
LO Discoaster tamalis
N
32
2.8
1123A-11H-CC
98.81
103.91
FO Globorotalia puncticuloides
F
3.4
1123A-11H-CC
101.24
107.32
LO Globorotalia pliozea
F
3.4
1123A-11H-CC
101.24
107.32
LO Globorotalia crassaconica
F
4
3.2
1123A-11H-CC
101.24
107.32
FO Globorotalia inflata
F
3.8
1123A-11H-CC
101.24
107.32
LO Pterocanium prismatium
R
1.7
1123A-11H-CC
101.24
107.32
FO Globorotalia inflata triangula
F
3.7
1123B-12H-CC
108.16
115.10
LCO Stichocorys group
R
4.2
1123A-12H-CC
110.76
117.42
LCO Globorotalia pliozea
F
3.7
1123A-12H-CC
110.86
117.52
LO Globorotalia puncticulata
F
5
3.8
1123A-12H-CC
110.86
117.52
FO Cycladophora davisiana davisiana
R
2.91-3.08
1123A-13H-CC
119.70
127.91
LO Reticulofenestra pseudoumbilicus
N
33
3.82
1123A-14H-CC
129.76
138.46
FO Pseudoemiliania lacunosa
N
4
1123A-14H-CC
129.76
139.15
LO Stichocorys peregrina
R
3.0
1123B-15H-CC
139.50
149.38
FO Amphirhopalum ypsilon
R
3.9
1123B-16H-CC
145.76
157.78
FO Discoaster asymmetricus
N
34
4.13
1123A-16H-CC
148.71
160.35
LO Lychnodictyum audax
R
3.7
1123B-17H-CC
155.63
167.57
FO Globorotalia crassaconica
F
6
4.7
1123B-18X-CC
163.79
175.73
FO Sphaeroidinella dehiscens
F
4.8
1123B-18X-CC
163.79
175.73
LO Dictyophimus splendens
R
5.0-5.2
1123B-19X-CC
172.31
184.25
FO Globorotalia puncticulata
F
8
5.2
1123B-19X-CC
172.31
184.25
LO Globorotalia sphericomiozea
F
9
5.2
1123B-20X-4, 83-87 cm
177.69
189.53
LO Globorotalia juanai
F
5.2
1123B-20X-CC
182.05
193.99
FO Globorotalia pliozea
F
5.4
1123B-20X-CC
182.05
193.99
LO Globorotalia miotumida
F
5.6
1123B-20X-CC
182.05
193.99
LO Globorotalia mons
F
7
4.8
1123B-21X-CC
191.37
203.31
FO Globorotalia sphericomiozea
F
10
5.6
1123B-21X-CC
191.37
203.31
LO Lychnocanoma parallelipes
R
5.6
1123B-21X-CC
191.37
203.31
FO Sphaeropyle langii
R
6.0-6.2
1123B-21X-CC
191.37
203.31
FO Globorotalia juanai
F
6.6
1123B-22X-CC
201.47
213.41
FO Stylacontarium acquilonium
R
7.88
1123B-22X-CC
201.47
213.41
LO Discoaster quinqueramus
N
35
5.56
1123B-24X-CC
220.55
232.49
FO Sphaeroidinella paenedehiscens
F
~8
1123B-27X-CC
249.42
261.36
LO Bolboforma pentaspinosa
F
11
7
1123B-27X-CC
249.42
261.36
FO Lychnocanoma parallelipes
R
6.8-7.3
1123B-29X-CC
268.50
280.53
Acme Stichocorys peregrina
R
6.8-7.3
1123B-29X-CC
268.50
280.53
FO Nitzschia reinholdii
D
28
7.2-7.3
1123B-29X-CC
268.59
280.53
FO Discoaster quinqueramus
N
36
8.3
1123B-30X-CC
278.05
289.99
LO Minylitha convallis
N
7.73
1123B-30X-CC
278.05
289.99
FO Hemidiscus ovalis
D
29
7.9
1123B-31X-CC
287.59
299.53
LO Didymocyrtis antepenultima
R
8.2
1123B-32X-CC
296.30
308.24
LO Globoquadrina dehiscens
F
14
9.9
1123B-35X-3, 132-134 cm
320.82
332.76
FO Didymocyrtis antepenultima
R
9.7
1123B-35X-CC
326.00
337.94
FO Minylitha convallis
N
37
9.34
1123B-35X-CC
330.74
342.68
FO Neogloboquadrina pachyderma
F
12
11.3
1123B-38X-CC
354.89
366.83
FO Zeaglobigerina nepenthes
F
13
11.8
1123B-38X-CC
354.89
366.83
LO Zeaglobigerina druryi
F
15
11.3
1123B-39X-CC
364.58
376.52
LO Coccolithus miopelagicus
N
38
10.9
1123B-40X-CC
374.16
386.10
LO Cyrtocapsella japonica
R
9.9
1123B-41X-CC
382.20
394.14
Acme Cyrtocapsella japonica
R
10.2
1123B-42X-CC
388.40
400.34
LO Paragloborotalia mayeri
F
11.25
1123B-43X-CC
399.62
411.56
LO Neogloboquadrina continuosa
F
11
1123B-43X-CC
399.62
411.56
Nitzschia denticuloides
D
30
11.3-13.5
1123B-43X-CC
399.62
411.56
LO Calcidiscus premacintyrei
N
39
12.65
1123B-43X-CC
399.62
411.56
LCO Cyrtocapsella tetrapera
R
12.6
1123B-44X-CC
408.30
420.24
LO Globorotalia conica
F
~ 11.5
1123B-45X-CC
416.66
428.60
FO Paragloborotalia mayeri
F
13.2
1123B-46X-CC
428.41
440.35
FO Globorotalia miotumida
F
16
13.2
1123B-46X-CC
428.41
440.35
FO Orbulina suturalis
F
15.1
1123B-46X-CC
428.41
440.35
LO Globorotalia praemenardii
F
17
13.2
1123B-47X-CC
437.06
449.00
FO Globorotalia amuria
F
~ 16
1123B-48X-CC
445.75
457.69
FO Globorotalia panda
F
15
1123B-48X-CC
445.75
457.69
FO Cibicidoides wuellerstorfi
F
16.4
1123B-49X-CC
457.21
469.15
LO Sphenolithus heteromorphus
N
40
13.57
1123B-49X-CC
457.21
469.15
FO Globorotalia praemenardii
F
18
15.8
1123B-50X-CC
468.60
480.54
LO Globorotalia miozea
F
19
15.8
1123B-51X-CC
479.72
491.66
LO Catapsydrax stainforthi
F
20
16.4
1123B-51X-CC
479.72
491.66
FO Zeaglobigerina druryi
F
17.4
1123B-52X-CC
488.60
500.54
FO Eucyrtidium punctatum
R
17.1
1123C-19X-CC
498.10
507.42
LO Paragloborotalia bella
F
16.3
1123C-19X-CC
498.10
507.42
FO Calcidiscus premacintyrei
N
17.4
1123C-20X-3, 147 cm
502.47
514.41
FO Globorotalia miozea
F
16.7
1123C-20X-CC
506.54
515.86
LO Catapsydrax dissimilis
F
23
17.3
1123C-20X-CC
506.39
515.86
FO Sphaeroidinellopsis disjuncta
F
21
18.5
1123C-21X-CC
517.11
526.43
FO Globorotalia zealandica
F
22
18.5
1123C-21X-CC
517.11
526.43
FO Sphenolithus heteromorphus
N
41
18.3
1123C-21X-CC
517.11
526.43
LO Sphenolithus belemnos
N
42
19.2
1123C-22X-6, 136 cm
526.26
538.20
LO Globorotalia incognita
F
24
18.6
1123C-23X-CC
536.70
546.02
FO Cyrtocapsella tetrapera
R
23.62
1123C-27X-CC
574.96
584.28
FO Globorotalia incognita
F
25
21.6
1123C-28X-CC
583.80
593.12
FO Globoquadrina dehiscens
F
25
1123C-28X-CC
583.80
593.12
LO Subbotina angiporoides
F
30
1123C-28X-CC
583.80
593.12
Acme Clausicoccus subdistichus
N
43
33.3
1123C-29X-CC
593.41
602.37
LCO Paragloborotalia gemma
F
32
1123C-29X-CC
593.41
602.37
LO Globigerinatheka index
F
34.3
1123C-31X-CC
611.18
620.50
LO Globigerinatheka semiinvoluta
F
~ 34.8
1123C-31X-CC
611.18
620.50
FO Paragloborotalia gemma
F
~ 35
1123C-31X-CC
611.18
620.50
LO Eucyrtidium spinosum
R
31.7-32.0
1123C-31X-CC
611.10
620.51
FO Eucyrtidium antiquum
R
32.8-33.1
1123C-31X-CC
611.10
620.44
LO Discoaster saipanensis
N
44
34.6
1123C-31X-CC
611.18
620.50
LO Nuttallides truempyi
F
? 34.8
1123C-33X-CC
625.80
635.12
Notes: F = foraminifer, N = nannofossils, D = diatoms, R = radiolarians. Most samples are from core catchers. Events numbered 1-44, under the column labeled "Figure 29," are plotted in the age-depth graph of Figure F29.