Table T1. Calcareous
nannofossil datums used during Leg 177 and their assigned age
estimates. (Continued on next
page.)
| Event |
Age
(Ma) |
Reference |
Martini
(1971)
base |
Okada
and Bukry
(1980)
base |
| |
|
|
|
|
| FO E.
huxleyi acme |
0.085 |
1 |
NN21b |
|
| FO E.
huxleyi |
0.26 |
1 |
NN21a |
CN15 |
| LO G.
caribbeanica acme |
0.26 |
2 |
|
|
| LO P.
lacunosa |
0.46 |
1 |
NN20 |
CN14b |
| LO R.
asanoi |
0.88 |
3 |
|
|
| RE Gephyrocapsa
medium |
0.96 |
4 |
|
CN14a? |
| FO R.
asanoi |
1.08 |
3 |
|
|
| LO Gephyrocapsa
large |
1.24 |
4 |
|
|
| FO Gephyrocapsa
large |
1.46 |
4 |
|
|
| LO C.
macintyrei |
1.60 |
4 |
|
|
| FO Gephyrocapsa
medium |
1.69 |
4 |
|
CN13b? |
|
Pliocene/Pleistocene |
1.77 |
|
|
|
| LO D.
brouweri |
1.95 |
4 |
NN19 |
CN13a |
| FCO D.
triradiatus |
2.15 |
4 |
|
|
| LO D.
pentaradiatus |
2.45 |
5 |
NN18 |
CN12d |
| LO D.
surculus |
2.55 |
6 |
NN17 |
CN12c |
| LO D.
tamalis |
2.83 |
6 |
CN12b |
|
| early/late
Pliocene |
3.58 |
|
|
|
| LO Sphenolithus
spp. |
3.66 |
7 |
|
|
| LO R.
pseudoumbilicus |
3.66 |
7 |
NN16 |
CN12a |
| FO P.
lacunosa |
4.00 |
8 |
|
|
|
Miocene/Pliocene |
5.32 |
|
|
|
| LO D.
quinqueramus |
5.54 |
9 |
NN12 |
CN10a |
| LO A.
amplificus |
5.99 |
9 |
|
|
| FO A.
amplificus |
6.84 |
9 |
|
|
| FO Amaurolithus
spp. |
7.39 |
9 |
|
CN9b |
| FO D.
quinqueramus |
8.60 |
10 |
NN11 |
CN9a |
| FO D.
loeblichii |
8.70 |
10 |
|
CN8b |
| LO D.
hamatus |
9.63 |
9 |
NN10 |
CN8a |
| FO D.
hamatus |
10.47 |
9 |
NN9 |
CN7 |
| LO C.
miopelagicus |
10.94 |
9 |
|
|
| middle/late
Miocene |
11.20 |
|
|
|
| LO C.
nitescens |
12.10 |
7 |
|
|
| FO C.
macintyrei |
12.30 |
7 |
|
|
| LO C.
premacintyrei |
12.70 |
7 |
|
|
| LCO C.
floridanus |
13.20 |
7 |
|
|
|
early/middle Miocene |
16.40 |
|
|
|
| FO C.
premacintyrei |
17.40 |
11 |
|
|
| LO S.
belemnos |
18.30 |
10 |
NN4 |
|
| FO D.
druggii |
23.20 |
10 |
NN2 |
CN1c |
|
Oligocene/Miocene |
23.80 |
|
|
|
| LO R.
bisecta |
23.90 |
10 |
NN1 |
CN1a |
| LO Z.
bijugatus |
24.50 |
10 |
|
|
| LO C.
altus |
26.10 |
10 |
|
|
| LO R.
umbilica |
31.30 |
10 |
NP23 |
CP18 |
| LO I.
recurvus |
31.8-33.1 |
10 |
|
|
| Acme Clausicoccus
spp. |
33.30 |
10 |
|
|
| LO R.
oamaruensis |
33.70 |
10 |
|
|
|
Eocene/Oligocene |
33.80 |
|
|
|
| LO D.
saipanensis |
34.2-35.4 |
10 |
NP21 |
CP16a |
| LO R.
reticulata |
36.10 |
10 |
|
|
| FO R.
oamaruensis |
35.40 |
10 |
|
|
| FO I.
recurvus |
36.00 |
10 |
NP19 |
|
| FO C.
oamaruensis |
37.00 |
10 |
NP18 |
CP15 |
| LO C.
grandis |
37.10 |
10 |
|
|
| FO R.
bisecta |
38.00 |
10 |
|
|
| LO C.
solitus |
40.40 |
10 |
NP17 |
CP14b |
| FO R.
reticulata |
42.00 |
10 |
|
|
| LO N.
fulgens |
43.10 |
10 |
|
|
| LO B.
gladius |
43.40 |
10 |
NP16 |
|
| FO R.
umbilica |
43.70 |
10 |
|
CP14a |
| LO C.
gigas |
44.50 |
10 |
|
CP13c |
| FO C.
gigas |
46.10 |
10 |
|
CP13b |
| FO N.
fulgens |
47.30 |
10 |
NN15 |
CP13a |
| FO D.
sublodoensis |
49.70 |
10 |
NP14 |
CP12 |