Table 1. Percentage abundance of selected diatom taxa in the mid-Pliocene of Hole 1022A.
 
Core, section, interval (cm)
Depth (mbsf)
Age
(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