Table T3. Datum levels for calcareous nannofossils, Hole 1259A.
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Datum
Species
Zone
Age
Age
(Ma)
Top
Bottom
Top
Bottom
207-1259A-







1R-CC, 12–17 0.00 3.35 0.00 3.35 Slump; no datums given
NP23 (= CP17) early Oligocene 30.4–31.7
2R-CC, 12–17 3.35 13.37 3.35 13.37 Slump; no datums given
NP21 early Oligocene 32.9–33.8
3R-CC, 15–18 13.37 25.86 13.37 25.86 Slump; no datums given
NP23 (= CP17) early Oligocene 30.4–31.7
4R-CC, 0–8 25.86 28.29 25.86 28.29 T Triquetrorhabdulus carinatus NN2 early Miocene 19.6
5R-CC, 5–13 41.29 50.06 41.29 50.06 B Sphenolithus belemnos NN2 early Miocene 18.9
6R-CC, 8–16 50.06 50.06 50.06 50.06 B Discoaster druggii NN2 early Miocene 23.2
8R-CC, 11–17 62.00 72.20 62.00 72.20 T acme Triquetrorhabdulus carinatus NN2 early Miocene 22.9
9R-CC, 18–23 82.33 91.95 82.33 91.95 B Sphenolithus disbelemnos NN1 early Miocene 23.5
10R-CC, 6–12 91.95 99.95 91.95 99.95 B Sphenolithus distentus NP23 (= CP18) late Oligocene 30.4
14R-4, 27.5–27.5 126.07 126.07 126.07 126.07 Disconformity Oligocene/Eocene boundary

33.7
14R-CC, 17–22 120.24 127.00 120.24 127.00 T Cribrocentrum reticulatum NP20/19 late Eocene 33.9
16R-CC, 10–15 136.35 145.61 136.35 145.61 T Chiasmolithus grandis NP17 middle Eocene 37.1
20R-CC, 8–13 173.03 185.77 173.03 185.77 T Chiasmolithus solitus NP16 middle Eocene 40.4
24R-CC, 21–24 220.67 231.79 220.67 231.79 B Reticulofenestra umbilica NP16 (= CP13c) middle Eocene 42.5
26R-CC, 14–19 231.79 245.28 231.79 245.28 T Chiasmolithus gigas mid NP15 (= CP13b) middle Eocene 44.0
29R-CC, 12–17 274.17 280.39 274.17 280.39 B Chiasmolithus gigas mid NP15 (= CP13b) middle Eocene 46.1
31R-CC, 15–19 280.39 287.81 280.39 287.81 T Discoaster sublodoensis NP14 middle Eocene 47.2
31R-CC, 15–19 287.81 298.12 287.81 298.12 B Discoaster sublodoensis NP14 middle Eocene 49.3
34R-CC, 0–5 313.52 323.00 313.37 322.85 T Tribrachiatus orthostylus NP12 early Eocene 51.0
35R-CC, 21–26 323.00 334.70 323.21 334.91 X T. bramlettei/T. contortus NP10 early Eocene 53.7
39R-5, 139–139 368.24 368.24 369.42 369.42 X at PETM Z. bijugatus/fasciculiths NP9 Eocene/Paleocene 55.5
41R-CC, 9–13 381.77 406.80 382.94 407.97 B Discoaster multiradiatus NP9 late Paleocene 56.2
47R-3, 72–72 442.30 442.30 443.78 443.78 T at K/T Micula prinsii CC26 late Maastrichtian 65.0
49R-CC, 11–17 467.05 477.12 467.91 477.98 B Micula murus CC25 late Maastrichtian 66.2
51R-CC, 14–16 477.12 487.51 477.45 487.84 T Uniplanarius trifidum CC23 Campanian/Maastrichtian boundary 71.3
52R-6, 104–104 494.64 494.70 496.39 496.45 B Micula decussata CC13 early Coniacian 87.2
54R-CC, 10–15 510.31 513.82 512.06 515.57 B Marthasterites furcatus CC13 Cenomanian/Turonian boundary 89.3
56R-CC, 14–19 520.22 529.29 521.97 531.04 B Eiffellithus eximius CC12 Turonian 91.0
59R-1, 138–138 540.88 541.00 542.72 542.84 B Liliasterites angularis
Turonian 93.2

Notes: T = top, B = bottom, X = crossover in abundance. K/T = Cretaceous/Tertiary boundary. PETM = Paleocene/Eocene Thermal Maximum.