Table T7. Distribution and relative abundances of selected diatom species from Hole 1151A.
| Leg | Site | Hole | Core | Type | Section | Top (cm) | Bottom (cm) | Depth (mbsf) | Diatom zones |
NPD | Geological Age |
Group abundance | Preservation | Actinocyclus ellipticus | Actinocyclus ingens | Actinocyclus oculatus | Actinoptychus senarius | Aulacoseira spp. | Cavitatus jouseanus | Cocconeis costata | Coscinodiscus marginatus | Crucidenticula nicobarica | Delphineis simonsenii | Denticulopsis dimorpha | Denticulopsis hyalina | Denticulopsis katayamae | Denticulopsis lauta | Denticulopsis praedimorpha | Denticulopsis praelauta | Denticulopsis simonsenii | Fragilariopsis doliolus | Hemidiscus cuneiformis | Ikebea tenuis | Kieselviella carina | Koizumia tatsunokuchiensis | Neodenticula kamtschatica | Neodenticula koizumii | Neodenticula seminae | Nitzschia fossilis | Nitzschia reinholdii | Nitzschia rolandii | Paralia sulcata | Proboscia barboi | Proboscia curvirostris | Pyxidicula zabelinae | Rhizosolenia hebetata f. hiemalis | Rouxia californica | Stephanopyxis horridus | Stephanopyxis turris | Thalassionema nitzschioides | Thalassionema schraderi | Thalassiosira antiqua | Thalassiosira gravida | Thalassiosira jouseae | Thalassiosira latimarginata | Thalassiosira nidulus | Thalassiosira oestrupii | Thalassiosira praeoestrupii | Thalassiosira yabei | Thalassiothrix longissima | Chaetoceros spp. (resting spores) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
186 |
1151 | A | 2 | R | 1 | 70 | 73 | 78.70 | P. curvirostris | 11 | Pleistocene | G | A | R | C | R | R | R | F | F | R | F | R | R | F | ||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 2 | R | CC | 5 | 8 | 82.08 | P. curvirostris | 11 | Pleistocene | G | A | R | C | R | R | C | F | C | R | A | |||||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 3 | R | CC | 0 | 5 | 92.50 | P. curvirostris | 11 | Pleistocene | G | A | C | r | R | R | F | C | F | A | ||||||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 4 | R | 2 | 138 | 142 | 96.18 | A. oculatus | 10 | Pleistocene | VG | A | F | F | C | F | F | F | F | C | ||||||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 4 | R | CC | 15 | 19 | 99.51 | A. oculatus | 10 | Pleistocene | G | A | R | R | F | C | R | R | R | F | C | |||||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 5 | R | CC | 0 | 5 | 105.90 | A. oculatus | 10 | late Pliocene | G | C | R | T | F | R | F | R | F | F | R | F | C | |||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 6 | R | 1 | 70 | 72 | 113.30 | N. koizumii | 9 | late Pliocene | G | A | R | F | F | C | F | F | F | R | R | C | ||||||||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 6 | R | CC | 8 | 13 | 118.07 | N. koizumii | 9 | late Pliocene | G | A | R | R | R | r | C | C | T | C | R | F | T | F | F | F | A | |||||||||||||||||||||||||||||||||
| 186 | 1151 | A | 7 | R | 1 | 70 | 73 | 122.90 | N. koizumii | 9 | late Pliocene | G | C | F | R | C | R | R | F | F | R | C |
Notes: NPD = North Pacific diatom zones, A = abundant, G = good, R = rare, F = few, T = trace, C = common, P = poor, M = moderate, r = reworking, VG = very good. Only a portion of this table appears here. The complete table is available in ASCII format.