Table T2. Oligocene–Miocene planktonic foraminifer datum levels recognized at Site 1148.
Event
Top
Bottom
Mean
depth
(mcd)
Age
(Ma)
Reference
Core, section, interval (cm)
Depth (mcd)
Core, section, interval (cm)
Depth (mcd)

184-1148A-

184-1148A-




LO Globoturborotalita nepenthes 19X-2, 60–62 176.83
19X-2, 75–77 176.98
176.91 4.20 Berggren et al., 1995
FO Sphaeroidinella dehiscens 20X-3, 75–77 189.08
20X-3, 90–92 188.23
188.16 5.54 Chaisson and Pearson, 1997
FO Globorotalia tumida 21X-2, 45–47 195.98
21X-2, 60–62 196.18
196.08 5.82 Chaisson and Pearson, 1997
FO Globigerinoides conglobatus 22X-2, 148–150 206.71
22X-3, 15–17 206.88
206.79 6.20 Chaisson and Pearson, 1997
FO Globigerinoides extremus 26X-2, 45–47 244.18
26X-2, 60–62 244.33
244.26 8.30 Berggren et al., 1995
LO Globoquadrina dehiscens 27X-4, 75–77 257.08
27X-4, 90–92 257.23
257.16 9.5–9.8 Site 1148 datum
FO Neogloboquadrina acostaensis 27X-6, 15–17 259.63
27X-6, 30–32 259.78
259.70 9.82 Chaisson and Pearson, 1997
LO Paragloborotalia mayeri 29X-3, 118–120 275.21
29X-3, 120–122 275.23
275.22 10.49 Chaisson and Pearson, 1997
FO Globoturborotalita nepenthes 30X-3, 0–2 283.63
30X-3, 30–32 283.93
283.78 11.19 Chaisson and Pearson, 1997
LO Globorotalia fohsi 32X-1, 117–119 301.00
32X-1, 120–122 301.03
301.02 13.00 Site 1148 datum
FO Globorotalia fohsi 32X-3, 30–32 303.13
32X-3, 60–62 303.43
303.28 13.42 Pearson and Chaisson, 1997
Mi-3





309.28 13.60 Miller et al., 1991, 1996
FO Globorotalia praefohsi 32X-6, 120–122 308.53
32X-7, 0–2 308.83
308.68 14.00 Pearson and Chaisson, 1997
LO Praeorbulina glomerosa 33X-2, 120–122 312.23
33X-3, 0–2 312.53
312.38 14.80 Berggren et al., 1995
FO Globorotalia praemenardii 33X-6, 90–92 317.93
33X-6, 120–122 318.23
317.98 14.90 Pearson and Chaisson, 1997
LO Globigerinatella insueta 34X-3, 0–2 320.82
34X-3, 30–32 321.12
320.97 15.00 Pearson and Chaisson, 1997
FO Orbulina 34X-2, 90–92 320.22
34X-2, 120–122 320.52
320.37 15.10 Berggren et al., 1995
Mi-2 (= CM3)





337.23 16.0–16.2 Mutti, 2000; Billups et al., 2002
FO Globorotalia glomerosa 36X-4, 120–122 344.13
36X-5, 0–2 344.43
344.18 16.10 Berggren et al., 1995
FO Globorotalia curva 37X-4, 30–32 352.83
37X-4, 60–62 353.13
352.98 16.30 Berggren et al., 1995
FO Globorotalia sicana 37X-5, 120–122 355.24
37X-6, 0–2 355.54
355.39 16.40 Berggren et al., 1995
LO Catapsydrax dissimilis 38X-5, 120–122 364.73
38X-6, 0–2 365.03
364.88 17.30 Berggren et al., 1995
FO Globorotalia praescitula 39X-CC, 26–33 374.74
40X-CC, 26–33 384.31
379.53 18.50 Wang, Prell, Blum, et al., 2000
FO Globigerinatella insueta 38X-CC, 30–32 367.30
39X-1, 30–32 367.43
367.37 18.00 Site 1148 datum
LO Globoquadrina binaiensis 40X-1, 30–32 377.03
40X-1, 60–62 377.33
377.18 19.10 Pearson and Chaisson, 1997
FO Globigerinoides altiapertura 43X-1, 45–47 406.18
43X-1, 85–87 406.58
406.38 20.50 Berggren et al., 1995
LO Paragloborotalia kugleri 43X-2, 45–47 407.68
43X-2, 85–87 408.08
408.83 21.50 Berggren et al., 1995
CM–O/M (top)





432.38 22.60 Hodell and Woodruff, 1994
FO Globoquadrina dehiscens 47X-7, 45–46 453.87
48X-1, 45–46 454.47
454.17 23.20 Berggren et al., 1995
CM–O/M (base)





458.98 23.80 Flower et al., 1997
FO Paragloborotalia kugleri 48X-4, 125–126 459.77
48X-5, 45–46 460.47
460.12 23.80 Berggren et al., 1995
FO Paragloborotalia pseudokugleri 50X-2, 85–86 475.57
50X-2, 125–126 475.97
475.77 25.90 Berggren et al., 1995
LO Paragloborotalia opima 50X-3, 45–46 476.67
51X-1, 15–16 480.37
478.52 27.10 Berggren et al., 1995
LO Chiloguembelina cubensis 52X-CC, 15–16 485.47
53X-1, 15–16 490.07
487.77 28.50 Berggren et al., 1995
FO Globigerina angulisuturalis 65X-CC, 27–34 593.63
66X-CC, 33–40 609.68
601.66 29.40 Berggren et al., 1995
LO Turborotalia ampliapertura 68X-CC, 24–31 629.65
69X-CC, 36–43 639.27
634.46 30.30 Berggren et al., 1995
FO Paragloborotalia opima 71X-CC, 37–43 658.54
72X-CC, 34–40 668.09
663.32 30.60 Berggren et al., 1995
LO Pseudohastigerina 74X-CC

75X-CC 696.94
692.26 32.00 Berggren et al., 1995

Notes: FO = first occurrence, LO = last occurrence. Ages for local datum levels are given in bold. Isotopic events (bold italic) are based on Miller et al. (1991, 1996) and Woodruff and Savin (1991), and their age estimates were calculated using the timescale of Berggren et al. (1995).