Table T5. Summary of calcareous nannofossil datums.
Datum
Age
(Ma)
Core, section,
interval (cm)
Depth interval
(mbsf)
    189-1168A-  
LO Reticulofenestra bisecta 23.9 47X-2, 125/47X-3, 125 437.65/439.15
LO Chiasmolithus altus 26.1 55X-5, 125/55X-CC 518.95/521.15
FO Cyclicargolithus abisectus 31.1 75X-4, 125/75X-5, 125 710.05/711.55
LO Reticulofenestra umbilicus 31.3 77X-CC/78X-1, 38 733.41/733.68
LO Isthmolithus recurvus 32.3 77X-CC/78X-1, 38 733.41/733.68
LO Reticulofenestra reticulata 35.9 86X-4, 125/86X-CC 815.65/818.33
    189-1170A-  
LO Reticulofenestra bisecta 23.9 42X-4, 10/42X-5, 10 382.0/383.5
LO Chiasmolithus altus 26.1 44X-1, 10/44X-2, 10 396.7/398.2
    189-1170D-  
FO Cyclicargolithus abisectus 31.1 7R-1, 90/8R-5, 10 476.73/487.6
LO Reticulofenestra umbilicus 31.3 7R-1, 90/8R-5, 10 476.73/487.6
LO Isthmolithus recurvus 32.3 7R-1, 90/8R-5, 10 476.73/487.6
LO Reticulofenestra reticulata 35.9 7R-1, 90/8R-5, 10 476.73/487.6
FO Isthmolithus recurvus 36.0 8R-5, 50/9R-2, 10 488.0/492.70
LO Chiasmolithus solitus 38.2 12R-3, 10/12R-CC 522.90/524.59
FO Reticulofenestra reticulata 41.2 12R-CC/13R-1, 40 524.59/529.5
FO Reticulofenestra umbilicus 42.0 34R-CC/35R-5, 10 741.48/747.3
    189-1171C-  
LO Reticulofenestra bisecta 23.9 28X-3, 59/28X-CC 252.49/253.79
    189-1171D-  
LO Chiasmolithus altus 26.1 3R-3, 2/3R-3, 20 269.62/269.80
FO Cyclicargolithus abisectus 31.1 3R-3, 20/3R-CC, 12 269.79/271.32
LO Reticulofenestra umbilicus 31.3 3R-3, 20/3R-CC, 12 269.79/271.32
LO Reticulofenestra oamaruensis 33.7 3R-3, 20/3R-CC, 12 269.79/271.32
FO Reticulofenestra oamaruensis 35.8 4R-CC/5R-CC 280.59/287.53
LO Reticulofenestra reticulata 35.9 4R-CC/5R-CC 280.59/287.53
FO Isthmolithus recurvus 36.0 4R-CC/5R-CC 280.59/287.53
LO Chiasmolithus solitus 38.2 6R-CC/7R-1, 25 295.26/296.25
FO Reticulofenestra reticulata 41.2 6R-CC/7R-1, 25 295.26/296.25
FO Reticulofenestra umbilicus 42.0 19R-1, 59/19R-3, 59 411.39/414.39
LO Discoaster kupperi 48.4 44R-CC/45R-CC 660.71/665.86
    189-1172A-  
LO Reticulofenestra bisecta 23.9 37X-6, 59/37X-7, 59 343.39/344.6
LO Chiasmolithus altus 26.1 38X-3, 62/38X-4, 54 348.52/349.96
FO Cyclicargolithus abisectus 31.1 39X-2, 18/39X-2, 135 356.28/357.45
LO Reticulofenestra umbilicus 31.3 39X-2, 143/39X-5, 63 357.43/361.23
LO Reticulofenestra reticulata 35.9 39X-2, 143/39X-5, 63 357.53/361.23
LO Chiasmolithus solitus 38.2 42X-5, 59/42X-6, 59 389.99/391.49
FO Reticulofenestra reticulata 41.2 44X-CC/45X-4, 59 412.47/417.29
FO Reticulofenestra umbilicus 42.0 46X-3, 59/53X-CC 425.39/498.0
    189-1172D-  
LO Discoaster kupperi 48.4 8R-CC/9R-CC 543.99/555.26

Note: LO = last occurrence; FO = first occurrence. Timescale from Berggren et al. (1995).