Table
6. Distribution and relative abundances of stratigraphically useful
planktonic foraminifers in Pliocene-Quaternary Hole 1018A.
Core,
section, interval (cm)
Depth (mbsf)
Abundance
Neogloboquadrina
pachyderma pachyderma
Neogloboquadrina
pachyderma B
Neogloboquadrina
pachyderma A
Globorotalia
inflata
Neogloboquadrina
dutertrei
Neogloboquadrina
humerosa praehumerosa
Neogloboquadrina
pachyderma C
Neogloboquadrina
kagaensis
Neogloboquadrina
asanoi
Globorotalia
puncticulata
Zone
Age
167-1018A-
1H-2,
120-122
2.70
A
F
A
R
F
CM1
Quaternary
1H-CC
5.00
A
A
2H-2,
120-122
7.60
F
R
F
2H-5,
120-122
12.10
C
F
C
2H-CC
14.00
A
A
3H-2,
120-122
17.10
F
F
3H-5,
120-122
21.60
C
C
3H-CC
24.00
A
A
4H-2,
120-122
26.60
A
A
4H-5,
120-122
31.10
C
C
4H-CC
33.00
A
A
5H-2,
120-122
36.10
C
C
5H-5,
120-122
40.66
F
F
5H-CC
43.00
F
F
6H-2,
120-122
45.60
F
F
6H-5,
120-122
50.10
A
F
A
6H-CC
52.00
C
R
C
7H-2,
120-122
55.10
B
7H-5,
120-122
59.60
R
R
7H-CC
62.00
A
A
F
A
8H-2,
120-122
64.60
F
F
8H-5,
120-122
69.10
C
C
8H-CC
71.00
A
A
9H-2,
120-125
74.10
C
F
C
9H-5,
120-125
78.60
C
C
9H-CC
80.00
A
F
A
C
10H-2,
120-125
83.60
C
C
10H-5,
120-125
88.10
A
A
10H-CC
90.00
A
A
C
11X-2,
120-125
92.90
A
A
11X-5,
120-125
97.40
F
F
11X-CC
99.00
A
A
C
R
C
C
12X-2,
120-125
101.80
B
12X-CC
109.00
C
C
C
F
F
CM2
13X-2,
120-125
111.40
C
C
13X-5,
120-125
115.90
B
13X-CC
118.00
R
R
14X-2,
120-125
121.00
A
C
A
C
14X-5,
120-125
125.50
B
14X-CC
128.00
A
A
R
15X-2,
120-125
129.72
C
C
R
15X-5,
120-125
134.19
B
15X-CC
138.00
C
C
F
16X-2,
120-125
140.40
R
R
R
16X-CC
148.00
A
A
A
17X-2,
120-125
150.00
A
A
A
17X-5,
120-125
154.50
B
17X-CC
157.00
A
A
A
R
18X-2,
120-122
158.42
B
CM3
18X-5,
120-122
162.92
F
F
18X-CC
167.00
B
19X-2,
120-125
169.20
F
F
R
19X-5,
120-125
173.70
F
C
F
19X-CC
176.00
C
F
F
F
20X-2,
120-125
178.80
A
F
A
20X-5,
120-125
183.30
B
20X-CC
186.00
A
A
C
21X-2,
123-128
187.43
B
21X-5,
119-124
192.89
F
F
21X-CC
195.00
C
R
22X-2,
122-127
198.02
C
C
22X-5,
121-126
202.51
B
22X-CC
205.00
C
F
C
23X-2,
120-125
207.60
B
CM4
late
Pliocene
23X-5,
120-125
212.10
F
F
R
23X-CC
215.00
B
24X-2,
120-125
217.20
B
24X-5,
120-125
221.70
B
24X-CC
224.00
B
25X-2,
121-126
226.91
B
25X-5,
120-128
231.40
F
R
F
25X-CC
234.00
C
C
F
R
26X-2,
120-125
236.50
F
F
F
26X-5,
120-125
241.00
B
26X-CC
244.00
C
C
late
Pliocene
27X-CC
253.00
C
A
C
CM5
28X-2,
120-125
255.70
F
R
F
R
28X-5,
122-127
260.22
B
28X-CC
263.00
R
R
29X-2,
120-125
265.20
B
29X-5,
120-125
269.70
R
R
R
29X-CC
272.00
F
R
R
F
30X-2,
120-125
274.90
F
30X-5,
120-125
279.40
B
F
R
30X-CC
281.00
R
R
31X-5,
121-126
289.01
B
31X-CC
292.00
F
R
F
32X-2,
120-125
294.20
B
32X-5,
120-125
298.70
B
32X-CC
301.00
B
33X-2,
120-125
303.80
F
R
F
CM6
33X-5,
120-125
308.30
R
R
33X-CC
311.00
B
34X-2,
120-125
313.40
R
R
R
34X-5,
120-125
317.90
F
R
R
F
34X-CC
320.00
C
C
F
C
C
35X-2,
120-125
323.00
B
35X-5,
119-124
327.49
B
35X-CC
330.00
C
C
C
36X-2,
120-125
332.70
B
36X-5,
120-125
337.20
R
R
36X-CC
340.00
F
F
37X-2,
120-125
342.40
R
R
R
37X-5,
119-124
346.89
R
R
R
37X-CC
349.00
F
R
F
38X-2,
119-124
352.09
B
38X-5,
119-124
356.59
R
R
R
38X-CC
359.00
B
39X-2,
127-131
361.77
R
R
R
R
39X-5,
125-130
366.25
A
A
A
39X-CC
369.00
C
C
C
F
40X-2,
124-128
371.44
A
A
A
40X-5,
120-124
375.90
C
C
CM7
early
Pliocene
40X-CC
378.00
F
F
41X-2,
119-122
380.99
F
F
F
41X-5,
119-122
385.49
C
R
41X-CC
388.00
B
42X-2,
117-120
390.57
C
R
C
42X-5,
120-123
395.10
F
F
42X-CC
397.00
R
R
43X-2,
120-123
400.20
B
43X-5,
122-125
404.72
F
C
R
R
43X-CC
407.00
C
R
C
C
44X-2,
120-123
409.70
B
44X-5,
122-125
414.22
R
R
44X-CC
417.00
B
45X-2,
118-120
419.38
B
45X-5,
121-123
423.91
B
45X-CC
426.00
R
R
R
Notes: California margin (CM) zones indicated. A = abundant, C = common, F = few, R = rare, B = barren.