Table T5. Summary of diatom datums identified, Holes 1165B and 1165C.
Upper sample | Lower sample | Event | Taxon | |||
---|---|---|---|---|---|---|
Core,
section, interval (cm)
|
Interval
depth (mbsf)
|
Core,
section, interval (cm)
|
Interval
depth (mbsf)
|
|||
188-1165B- | 188-1165B- | |||||
1H-2, 20-21 | 1.70 | 1H-5, 20-21 | 6.20 | LO | Actinocylclus ingens | |
1H-5, 20-21 | 6.20 | 2H-2, 95-96 | 9.25 | LO | Fragilariopsis barronii | |
2H-2, 95-96 | 9.25 | 3H-1, 95-96 | 17.25 | LO | Thalassiosira kolbei | |
3H-1, 95-96 | 17.25 | 3H-2, 20-21 | 18.00 | LO | Thalassiosira vulnifica | |
3H-2, 20-21 | 18.00 | 3H-3, 20-21 | 19.50 | LO | Thalassiosira insigna | |
3H-CC | 25.01 | 4H-1, 20-21 | 26.00 | FO | Thalassiosira vulnifica | |
5H-1, 127-128 | 36.57 | 5H-2, 127-128 | 38.07 | FO | Fragilariopsis interfrigidaria | |
5H-4, 95-96 | 40.75 | 5H-5, 60-61 | 41.90 | FO | Fragilariopsis barronii | |
6H-3, 95-96 | 48.75 | 6H-4, 59-60 | 49.89 | FO | Thalassiosira inura | |
9H-CC | 81.39 | 10H-1, 20-21 | 83.00 | FO | Hemidiscus triangularus | |
11H-CC | 100.32 | 12H-CC | 101.80 | FO | Hemidiscus ovalis | |
12H-CC | 101.80 | 13H-6, 70-71 | 114.50 | FO | Thalassiosira torokina | |
23X-3, 20-21 | 188.30 | 23X-CC | 194.70 | LO | Denticulopsis dimorpha | |
27X-CC | 231.69 | 28X-CC | 242.68 | FO | Denticulopsis dimorpha | |
28X-CC | 242.68 | 30X-CC | 253.71 | FO | Denticulopsis praedimorpha | |
33X-CC | 265.70 | 34X-CC | 290.89 | FO | Nitzschia denticuloides | |
35X-CC | 298.38 | 36X-CC | 309.52 | FCO | Denticulopsis simonsenii | |
38X-CC | 327.78 | 39X-CC | 336.89 | FO | Actinocyclus ingens v. nodus | |
50X-CC | 443.99 | 51X-CC | 449.80 | FCO | Actinocyclus ingens | |
55X-CC | 487.52 | 56X-CC | 495.81 | FO | Denticulopsis maccollumii | |
55X-CC | 487.52 | 56X-CC | 495.81 | FO | Crucidenticula kanayae | |
59X-CC | 527.92 | 60X-CC | 534.60 | LO | Thalassiosira praefraga | |
188-1165C- | 188-1165C- | |||||
10R-3, 127-129 | 750.77 | — | — | FO | Thalassiosira praefraga |
Notes: Sample designations and depths in bold type represent the occurrence of each taxon, and plain type represents sample-spacing uncertainty for each datum. LO = last occurrence, FO = first occurrence, FCO = first common occurrence. — = not identified due to opal-A dissolution.