Table
1. Percentage abundance of selected diatom taxa in the mid-Pliocene
of Hole 1022A.
(Ma)
Actinoptychus
spp.
Azpeitia
nodulifera
Delphineis
spp.
Chaetoceros
spores
Coscinodiscus
marginatus
Hemidiscus
cuneiformis
Neodenticula
kamtschatica
Neodenticula
koizumii
Nitzschia
reinholdii
Proboscia
barboi
Rhizosolenia
spp.
Stephanopyxis
spp.
Thalassionema
nitzschioides
Thalassiosira
oestrupii
Thalassiosira
spp.
Thalassiothrix
longissima
Benthic
and freshwater taxa
Reworked
taxa
Other
planktonic taxa
Total
counted
167-1022A-
9H-1,
50-52
71.50
2.50
0.0
1.0
3.6
32.3
0.0
0.0
0.0
35.0
0.0
0.0
1.0
4.0
9.9
2.0
9.6
1.0
0.7
0.0
0.0
303
9H-2,
50-52
73.00
2.53
0.0
0.0
4.0
16.8
0.0
0.0
15.0
28.3
0.0
0.0
0.6
0.0
12.1
0.6
18.5
1.7
1.7
0.6
0.0
173
9H-3,
50-52
74.50
2.55
0.0
2.5
1.2
34.6
7.4
0.0
0.0
7.4
0.0
4.9
2.5
12.3
9.9
2.5
12.3
2.5
0.0
0.0
0.0
40
9H-4,
50-52
76.00
2.57
0.0
0.0
1.6
46.4
2.3
0.0
1.8
30.8
0.0
0.0
1.8
0.0
7.4
0.9
6.0
0.5
0.5
0.0
0.0
218
9H-5,
50-52
77.50
2.59
0.3
1.3
0.3
29.4
2.3
1.0
0.7
22.2
0.3
0.3
0.3
2.0
21.2
2.9
12.7
1.3
0.3
0.0
0.7
306
9H-6,
50-52
79.00
2.62
1.7
1.0
0.3
26.0
3.3
0.0
0.3
38.7
0.0
0.7
0.7
0.7
13.3
1.0
10.0
1.7
1.0
0.0
0.7
300
9H-7,
50-52
80.50
2.64
0.3
0.6
1.9
38.2
0.8
0.3
0.8
29.2
0.3
0.3
1.4
1.1
9.2
0.0
11.4
1.1
1.4
0.8
0.6
359
10H-1,
50-52
81.00
2.66
1.0
1.0
2.3
26.2
2.3
1.3
0.7
33.8
0.0
1.7
1.0
1.0
13.9
1.0
8.3
0.7
1.7
0.0
1.7
302
10H-2,
50-52
82.50
2.69
0.0
0.7
3.0
32.0
0.7
0.7
22.8
7.3
0.0
0.3
2.0
3.6
18.2
0.0
6.6
1.0
0.3
0.3
0.3
303
10H-3,
50-52
84.00
2.71
0.0
0.3
2.3
23.0
1.0
0.3
40.8
3.6
0.3
0.3
0.7
0.3
19.4
0.3
5.3
0.3
0.0
0.3
0.7
304
10H-5,
50-52
85.92
2.74
0.7
1.4
2.4
42.0
0.2
0.2
13.2
2.8
0.5
0.2
0.7
3.8
21.2
0.9
6.4
0.9
0.9
0.2
0.9
424
10H-6,
50-52
87.03
2.76
0.0
0.0
1.2
22.7
1.6
0.4
28.5
4.7
0.4
0.4
1.2
0.8
28.1
0.8
5.9
0.4
0.8
0.0
1.2
256
10H-7,
50-52
88.53
2.78
2.0
3.6
0.7
24.4
3.3
1.7
5.6
5.3
0.3
4.0
0.7
4.0
25.7
4.6
8.9
1.3
0.7
0.0
2.6
303
11H-1,
50-52
90.50
2.80
0.4
5.0
2.1
22.1
6.0
1.8
2.1
2.8
0.7
3.9
1.8
2.8
27.0
3.6
15.7
1.8
0.7
0.0
0.0
281
11H-2,
50-52
92.00
2.83
0.3
0.6
2.9
52.4
0.3
1.0
1.9
1.9
0.6
0.6
1.3
2.9
23.3
1.3
4.8
0.6
1.0
0.0
1.3
313
11H-3,
50-52
93.50
2.85
0.4
2.6
1.3
28.8
3.5
1.7
5.2
1.3
1.3
3.1
0.9
3.5
24.5
1.7
10.0
1.7
2.6
0.9
2.6
229
11H-4,
50-52
95.00
2.87
1.9
2.3
2.3
31.5
5.2
1.0
3.2
1.0
0.6
1.9
1.9
2.9
26.6
2.9
11.0
1.3
2.6
0.3
0.6
308
11H-5,
50-52
96.50
2.90
3.0
3.0
2.3
33.2
4.0
0.7
5.0
2.3
0.3
1.3
1.7
2.3
28.2
2.0
8.6
0.3
1.0
1.0
1.3
301
11H-6,
50-52
98.00
2.92
1.6
1.9
1.9
23.7
3.1
0.3
9.3
1.9
0.6
1.9
1.2
3.4
28.7
3.4
11.8
0.9
2.2
0.6
1.6
321
11H-7,
50-52
99.50
2.94
0.7
1.3
0.7
27.6
6.3
0.0
12.0
0.0
0.3
3.0
2.0
0.3
30.2
0.7
9.6
2.7
2.7
0.7
0.0
301
12H-1,
50-52
100.00
2.96
0.7
1.7
0.7
24.9
4.0
0.7
18.6
0.0
0.0
1.7
2.0
2.0
25.6
3.7
11.3
1.0
1.3
0.3
0.3
301
12H-2,
50-52
101.54
2.99
3.1
0.7
0.7
24.2
0.3
0.0
18.0
0.0
0.3
0.3
0.7
1.4
36.7
2.4
7.3
0.7
3.1
0.3
1.4
289
12H-3,
50-52
103.04
3.01
2.1
4.2
2.1
26.6
2.1
0.0
6.3
0.0
0.0
2.1
2.8
3.5
35.0
0.7
6.3
0.7
5.6
2.1
0.0
143
12H-4,
50-52
104.54
3.03
0.7
1.0
1.3
20.5
2.0
0.0
26.1
0.3
0.0
0.3
0.7
0.0
34.7
0.7
5.9
0.7
3.0
0.3
1.3
303
12H-5,
50-52
106.04
3.06
1.6
1.0
1.0
21.0
10.5
0.3
10.8
0.0
0.0
2.9
0.6
3.5
30.6
0.6
8.0
0.6
2.9
0.6
2.5
314
12H-6,
50-52
107.54
3.08
1.9
0.6
0.3
20.2
15.1
0.3
15.7
0.6
0.3
7.1
2.6
3.8
10.9
2.2
11.5
2.9
1.0
0.3
2.2
312
12H-7,
50-52
109.04
3.10
1.3
0.3
1.3
22.4
14.1
0.3
14.1
0.3
1.0
5.6
0.3
6.9
11.5
1.6
14.1
2.6
1.3
0.7
0.7
304
13H-1,
50-52
109.50
3.11
3.0
0.3
1.3
19.6
14.0
0.0
6.3
0.0
0.3
3.0
4.0
3.3
34.6
1.0
5.0
2.0
0.3
1.3
0.7
301
13H-2,
53-55
111.03
3.13
0.3
0.7
0.0
26.9
5.0
0.3
12.6
0.3
0.7
1.0
4.7
3.7
30.6
1.0
5.6
2.7
2.0
0.7
1.3
301
13H-3,
50-52
112.50
3.16
0.8
0.8
0.8
30.5
4.6
0.0
9.2
0.0
0.8
0.8
3.8
6.9
35.1
0.0
2.3
0.0
2.3
1.5
0.0
131
13H-4,
50-52
114.00
3.18
0.3
0.3
0.7
34.7
9.6
0.0
5.9
0.3
0.3
1.3
2.6
7.3
21.5
1.3
7.6
3.3
1.3
0.3
1.3
303
13H-5,
50-52
115.50
3.20
0.7
0.0
1.6
29.2
3.9
0.0
11.5
0.0
0.3
1.6
0.7
4.6
36.1
0.0
6.6
1.3
0.7
0.7
0.7
305
13H-6,
50-52
117.00
3.23
0.0
0.0
1.3
37.5
3.9
0.7
2.0
0.0
0.7
0.7
0.7
3.9
40.8
0.7
3.9
0.7
2.0
0.7
0.0
152
13H-7,
50-52
118.50
3.25
0.6
0.3
0.3
28.2
10.9
0.6
10.9
1.0
2.6
0.6
2.6
4.8
25.3
1.0
5.1
1.9
1.9
0.6
0.6
312