Table T9. Diatom bioevents identified, Holes 1170A and 1170D.
Bioevent | Age (Ma) |
Interval (cm) | Depth (mbsf) | Mean (mbsf) |
Error
bar (m) |
|||
---|---|---|---|---|---|---|---|---|
Top
|
Bottom
|
Top
|
Bottom
|
|||||
LO Actinocyclus ingens | 0.64 | 2H-CC | 3H-CC | 11.67 | 20.75 | 16.21 | 4.54 | |
LO Fragilariopsis barronii | 1.44 | 4H-CC | 5H-CC | 29.07 | 39.40 | 34.24 | 5.17 | |
LO Proboscia baboi | 1.80 | 4H-CC | 5H-CC | 29.07 | 39.40 | 34.24 | 5.17 | |
LO Thalassiosira complicata | 2.50 | 7H-CC | 8H-CC | 58.25 | 68.97 | 63.61 | 5.36 | |
LO Thalassiosira inura | 2.50 | 7H-CC | 8H-CC | 58.25 | 68.97 | 63.61 | 5.36 | |
LO Fragilariopsis weaveri | 2.65 | 7H-CC | 8H-CC | 58.25 | 68.97 | 63.61 | 5.36 | |
FO Thalassiosira complicata | 4.44 | 11H-CC | 12H-CC | 96.88 | 106.45 | 101.67 | 4.79 | |
FO Thalassiosira inura | 4.92 | 11H-CC | 12H-CC | 96.88 | 106.45 | 101.67 | 4.79 | |
LO Actinocyclus ingens var. ovalis | 6.27 | 16H-CC | 17H-CC | 143.75 | 153.57 | 148.66 | 4.91 | |
LO Denticulopsis dimorpha | 10.70 | 22X-CC | 23X-CC | 192.05 | 201.09 | 196.57 | 4.52 | |
FO Denticulopsis dimorpha | 12.20 | 27X-CC | 28X-CC | 239.38 | 250.70 | 245.04 | 5.66 | |
LO Actinocyclus ingens var. nodus | 12.71 | 27X-CC | 28X-CC | 239.38 | 250.70 | 245.04 | 5.66 | |
FO Actinocyclus ingens var. nodus | 14.38 | 32X-CC | 33X-CC | 290.89 | 299.60 | 295.25 | 4.36 | |
LO Cavitatus (Synedra) jouseanus | 14.61 | 32X-CC | 33X-CC | 290.89 | 299.60 | 295.25 | 4.36 | |
LO Denticulopsis maccollumii | 14.70 | 33X-CC | 34X-CC | 299.60 | 310.39 | 305.00 | 5.39 | |
LO Azpeitia gombosi | 21.10 | 41X -CC | 42X-CC | 376.53 | 387.17 | 381.85 | 5.32 | |
LO Coscinodiscus lewisianus var. levis | 28.20 | 42X-CC | 43X-CC | 387.17 | 396.63 | 391.90 | 4.73 | |
FO Coscinodiscus lewisianus var. levis | 28.50 | 43X-CC | 44X-CC | 396.63 | 405.83 | 401.23 | 4.60 | |
LO Rocella vigilans (small) | 28.80 | 43X-CC | 44X-CC | 396.63 | 405.83 | 401.23 | 4.60 | |
FO Coscinodiscus lewisianus var. levis | 28.50 | 1R-CC | 2R-CC | 427.27 | 437.50 | 432.39 | 5.12 | |
FO Rocella vigilans (small) | 30.24 | 48X-CC | 49X-CC | 435.26 | 450.25 | 442.76 | 7.50 | |
FO Cavitatus (Synedra) jouseanus | 30.62 | 4R-1, 120 | 4R-CC | 453.90 | 454.95 | 454.43 | 0.53 |
Note: LO = last occurrence, FO = first occurrence.