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.