Table T3. Datum levels for calcareous nannofossils, Site 1258.
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Datum
Species
Zone
Age
Age
(Ma)
Top
Bottom
Top
Bottom
207-1258A-








1R-CC, 6–11 5.04 11.49 5.04 11.49 B Discoaster kugleri NN7 middle Miocene 11.6–11.9
2R-CC, 6–11 11.49 22.93 11.49 22.93 B Nannotetrina fulgens NP15 middle Eocene 43.4–47.0
5R-CC, 14–20 30.33 38.58 30.33 43.08 T Discoaster sublodoensis NP14 middle Eocene 47.2
6R-CC, 0–6 38.58 52.50 43.08 53.02 T Discoaster lodoensis NP14 middle Eocene 48.0
9R-CC, 24 69.38 81.83 71.23 82.08 T Tribrachiatus orthostylus NP12 early Eocene 51.0
10R-CC, 6–12 90.22 100.52 90.85 100.22 B Discoaster lodoensis NP12 early Eocene 52.4
11R-CC, 6–13 90.22 100.52 90.85 100.22 T Sphenolithus conspicuus NP12 early Eocene 51.0
11R-CC, 6–13 100.52 110.69 100.22 111.08 B Sphenolithus radians NP12 early Eocene 53.3
12R-CC, 9–14 110.69 120.03 111.08 120.64 B Sphenolithus radians NP12 early Eocene 53.3
13R-CC, 0–5 120.03 125.39 120.64 126.30 B Tribrachiatus orthostylus NP12 early Eocene 53.4
13R-CC, 0–5 120.03 125.39 120.64 126.30 B Sphenolithus conspicuus NP12 early Eocene 53.3
15R-4, 51–53 134.71 149.16 158.25 171.10 B Discoaster diastypus NP10 early Eocene 53.9
15R-4, 51–53 125.39 134.71 126.30 158.25 T Discoaster multiradiatus NP10 early Eocene 53.0
19R-CC, 24–29 168.35 178.00 192.21 201.43 T Fasciculithus spp. NP9 late Paleocene 54.1
23R-CC, 17–22 216.14 225.73 239.57 249.16 B Discoaster mohleri NP8 late Paleocene 57.5
25R-CC, 12–17 235.88 245.47 258.33 267.92 B Heliolithus riedeli NP7 late Paleocene 57.3
27R-1, 3 245.33 252.60 267.78 275.05 B Cruciplacolithus tenuis NP2 early Paleocene 64.5
27R-CC, 0–5 245.33 252.60 267.78 275.05 T Micula murus CC25/CC26 late Maastrichtian 65.0
31R-CC, 21–26 293.86 302.09 316.60 325.30 B Micula murus CC25 late Maastrichtian 66.2
33R-CC, 0–5 302.09 312.81 325.30 334.92 T Reinhardtites levis CC24 early Maastrichtian/late Campanian 69.2
35R-CC, 0–2 320.24 331.34 345.13 354.21 T Reinhardtites levis CC23 late Campanian 69.2
35R-CC, 0–2 320.24 331.34 345.13 354.21 T Uniplanarius sissinghi CC23 late Campanian 69.6
35R-CC, 0–2 320.24 331.34 345.13 354.21 T Uniplanarius trifidum CC23 late Campanian 69.6
40R-CC, 0–5 377.77 385.69 401.70 409.62 B Uniplanarius trifidum CC23 late Campanian 76.0
41R-CC, 24–29 385.69 399.47 409.62 424.42 B Broinsonia parca constricta CC20 early Campanian 82.5
45R-CC, 0–1 411.38 422.58 436.26 447.46 T Corollithion kennedyi CC10 Cenomanian 94.0
46R-CC, 16–19 422.58 429.42 447.46 454.30 T Axopodorhabdus albianus CC10 Cenomanian 94.0
207-1258B-








2R-CC, 7–12 7.65 18.16 10.55 18.16 T Chiasmolithus gigas NP15 middle Eocene 46.1
5R-CC, 9–14 38.64 49.62 38.64 49.72 T Discoaster lodoensis NP14 middle Eocene 48.0
8R-CC, 22–27 69.02 78.96 69.01 78.49 T Tribrachiatus orthostylus NP12 early Eocene 51.0
17R-CC, 0–7 155.72 166.37 157.86 166.96 T Discoaster multiradiatus NP9 early Eocene 53.0
27R-CC, 20–23 243.57 253.94 264.82 277.37 T Micula murus CC25/CC26 late Maastrichtian 65.0
29R-CC, 0–4 266.02 282.11 292.50 303.61 B Micula murus CC25 late Maastrichtian 66.2
36R-CC, 11–16 321.22 334.93 341.61 347.74 T Uniplanarius trifidum CC23 late Campanian~ 71.3
42R-CC, 0–4 387.11 392.00 409.22 414.11 B Uniplanarius trifidum CC23 late Campanian~ 76.0
47R-CC, 8–13 407.54 412.20 429.60 434.26 T Axopodorhabdus albianus CC10 Cenomanian 94.0
57R-CC, 15–20 458.90
483.47
B Eiffellithus turriseiffelii CC9 Albian 101.7
207-1258C-








1R-CC, 9–14 129.84 139.21 129.11 140.58 B Discoaster diastypus NP11 early Eocene 53.9
22R-CC, 14–17 420.37 428.26 444.48 452.82 T Corollithion kennedyi CC10 Cenomanian 94.0
27R-CC, 19–23 451.74 454.38 483.12 486.88 B Eiffellithus turriseiffelii NC9a Albian 101.7

Note: T = top, B = bottom.