Table T5. Summary of biostratigraphic age assignments for Site 1090. (Continued on next page.)
Core,
section, interval (cm) |
Depth (mbsf) |
Depth (mcd) |
Calcareous nannofossil zone |
Calcareous
nannofossil age (Ma) |
Diatom zone |
Diatom age (Ma) |
Radiolaria zone |
Radiolaria age (Ma) |
Benthic foraminifer zone |
Planktic foraminifer age (Ma) |
Comment |
---|---|---|---|---|---|---|---|---|---|---|---|
177-1090A- | |||||||||||
1H-CC, 10-15 | 6.97 | 6.97 | NN21 | 0-0.26 | T. lentiginosa Subzone c | 0-0.18 | |||||
177-1090B- | |||||||||||
1H-CC, 20-25 | 4.20 | 4.20 | NN21 | 0-0.26 | T. lentiginosa Subzone c | 0-0.18 | B. aquilonalis/Omega | 0-0.46 | |||
2H-1, 130-130 | 5.50 | 5.50 | NN21 | 0-0.26 | |||||||
2H-2, 30-30 | 6.00 | 6.00 | NN20 | >0.26 | Not well defined | ||||||
2H-CC, 0-10 | 13.80 | 13.80 | NN20 | >0.26? | T. lentiginosa Subzone b | 0.18-0.42 | |||||
3H-1, 40-40 | 14.10 | 15.85 | NN19 | <0.46 | |||||||
3H-1, 70-70 | 14.40 | 16.15 | T. lentiginosa Subzone a | 0.42-0.65 | |||||||
3H-1, 100-100 | 14.70 | 16.45 | T. lentiginosa Subzone a | 0.42-0.65 | |||||||
3H-1, 130-130 | 15.00 | 16.75 | NN19 | 0.46-0.88 | |||||||
3H-1, 140-140 | 15.10 | 16.85 | T. lentiginosa Subzone a | 0.42-0.65 | |||||||
3H-6, 50-50 | 21.70 | 23.45 | A. ingens Subzone c | 0.65-1.07 | Warm-water diatom assemblage ?MIS 17 | ||||||
3H-6, 70-70 | 21.90 | 23.65 | A. ingens Subzone c | 0.65-1.07 | Cold-water diatom assemblage ?MIS 18 | ||||||
3H-6, 92-92 | 22.12 | 23.87 | A. ingens Subzone c | 0.65-1.07 | Cold-water diatom assemblage ?MIS 18 | ||||||
3H-CC, 13-18 | 22.28 | 24.03 | NN19 | 0.46-0.88 | A. ingens Subzone c | 0.65-1.07 | |||||
4H-3, 30-30 | 26.50 | 29.01 | NN19 | 0.46-0.88 | |||||||
4H-3, 130-130 | 27.50 | 30.01 | NN19 | 0.88-0.96 | |||||||
4H-4, 40-40 | 28.10 | 30.61 | A. ingens Subzone c | 0.65-1.07 | |||||||
4H-5, 10-10 | 29.30 | 31.81 | A. ingens Subzone c | 0.65-1.07 | |||||||
4H-6, 30-30 | 31.00 | 33.51 | 0.88-0.96 | ||||||||
4H-6, 130-130 | 32.00 | 34.51 | NN19 | 0.96-1.08 | |||||||
4H-CC, 12-17 | 32.51 | 35.02 | NN19 | 0.96-1.08 | A. ingens Subzone c | 0.65-1.07 | ? | <2.61 | >0.6-0.9 | ||
5H-1, 35-35 | 33.05 | 36.66 | NN19 | 1.08-1.24 | |||||||
5H-1, 130-130 | 34.00 | 37.61 | NN19 | 1.24-1.46 | |||||||
5H-3, 30-30 | 36.00 | 39.61 | NN19 | 1.24-1.46 | |||||||
5H-3, 110-110 | 36.80 | 40.41 | NN19 | 1.46-1.6 | |||||||
5H-5, 30-30 | 39.00 | 42.31 | NN19 | 1.46-1.6 | |||||||
5H-5, 130-130 | 40.00 | 43.31 | NN19 | 1.6-1.69 | |||||||
5H-6, 30-30 | 40.50 | 43.81 | NN19 | >1.69 | |||||||
5H-6, 130-130 | 41.50 | 44.81 | NN19 | 1.69-1.95 | A. ingens Subzone a | 1.3-1.8 | |||||
5H-CC, 14-19 | 41.40 | 45.01 | NN18 | 1.95-2.45 | P. barboi | 1.8-2.0 | |||||
6H-1, 30-30 | 42.50 | 45.11 | NN18 | 1.95-2.45 | P. barboi | 1.8-2.0 | |||||
6H-7, 30-30 | 51.50 | 53.10 | NN18 | 1.95-2.45 | |||||||
6H-CC, 9-14 | 51.84 | 53.44 | NN17 | >2.45 | T.
kolbei/ F. matuyamae |
2-2.5 | |||||
7H-CC, 12-17 | 59.29 | 65.59 | NN17 | >2.45 | F. interfrigidaria | 3.3-3.8 | ? | >2.61 | |||
8H-1, 120-120 | 62.40 | 66.11 | NN16 | 2.45-3.66 | |||||||
8H-2, 30-30 | 63.30 | 66.71 | F. interfrigidaria | 3.3-3.8 | |||||||
8H-2, 90-90 | 63.90 | 67.31 | F. interfrigidaria | 3.3-3.8 | |||||||
8H-2, 120-120 | 63.90 | 67.61 | pre F. interfrigidaria | early Pliocene, >3.8 | |||||||
8H-2, 140-140 | 64.10 | 67.81 | NN14-15? | >3.66 | |||||||
8H-3, 90-90 | 65.10 | 68.81 | pre F. interfrigidaria | early Pliocene, >3.8 | |||||||
8H-3, 120-120 | 65.40 | 69.11 | No zonation | mixed ages | Warm-water diatom assemblage | ||||||
8H-4, 30-30 | 66.00 | 69.71 | ? | No zonation | mixed ages | early Matuyama/late Gauss + early Miocene | |||||
8H-4, 60-60 | 66.30 | 70.01 | No zonation | mixed ages | early Matuyama/late Gauss + early Miocene | ||||||
8H-4, 90-90 | 66.60 | 70.31 | No zonation | early Miocene | |||||||
8H-5, 30-30 | 67.50 | 71.21 | Miocene | CN: no markers | |||||||
8H-CC, 18-23 | 69.63 | 73.34 | No zonation | C.
longithorax/ C. antiqua |
19.11-22.48 | Mixed diatom
assemblage Neogene/Paleogene; CN: no markers |
|||||
9H-3, 140-140 | 75.10 | 78.79 | Miocene | CN: no markers | |||||||
9H-CC, 13-18 | 79.99 | 83.68 | No zonation | early Miocene | CN: no markers | ||||||
10H-CC, 19-24 | 88.41 | 92.98 | CN: no markers | ||||||||
11H-CC, 10-15 | 99.16 | 103.15 | middle-lower
T. fraga |
19-20.8 | C.
longithorax/ C. antiqua |
19.11-22.48 | CN: no markers | ||||
12H-CC, 6-11 | 108.89 | 112.56 | early Miocene? | C.
longithorax/ C. antiqua |
19.11-22.48 | ||||||
13H-CC, 0-5 | 117.12 | 122.53 | C.
longithorax/ C. antiqua |
19.11-22.48 | CN: barren | ||||||
14H-CC, 0-5 | 127.51 | 131.16 | e. Mioc./l. Oligoc. | L. conica | 22.48-(24.1-?28.7) | ||||||
15H-CC, 0-10 | 136.73 | 143.22 | ? | <23.9 | R. gelida | 22.6-26.5 | L. conica | 22.48-(24.1-?28.7) | |||
16H-CC, 0-10 | 146.75 | 153.40 | <23.9 | R. gelida | 22.6-26.5 | ||||||
17H-CC, 14-24 | 154.36 | 161.86 | lower R. gelida | 25.5-26.5 | CN: barren | ||||||
18H-CC, 6-16 | 165.37 | 173.15 | NN1? | <23.9 | lower R. gelida | 25.5-26.5 | |||||
19H-CC, 24-34 | 173.14 | 182.63 | >23.9 | L. conica | 22.48-(24.1-?28.7) | ||||||
20H-CC, 22-32 | 184.42 | 192.03 | >23.9 | A.
gombosii + L. ornata |
26.5-28 | ||||||
21X-3, 30-30 | 188.00 | 196.05 | >23.9 | ||||||||
21X-3, 130-130 | 189.00 | 197.05 | NP25 | >23.9 | |||||||
21X-CC, 15-25 | 194.09 | 202.14 | L. conica | 22.48-(24.1-?28.7) | CN: barren | ||||||
22X-CC, 0-10 | 203.69 | 211.30 | A.
gombosii + L. ornata |
26.5-28.3 | A. irregularis | (24.1-?28.7)- (30.9-34.7) |
CN: barren | ||||
23X-7, 30-30 | 213.40 | 220.70 | NP23 | <31.3 | |||||||
23X-7, 130-130 | 214.40 | 221.70 | NP22 | >31.3 | |||||||
23X-CC, 26-36 | 213.76 | 222.16 | NP22 | >31.8-33.1 | ? late Eocene | A. irregularis | (24.1-?28.7)- (30.9-34.7) |
||||
24X-1, 30-30 | 214.10 | 225.06 | NP22 | >31.8 | |||||||
23X-7, 130-130 | 214.40 | 221.70 | NP22 | >31.3 | |||||||
24X-4, 30-30 | 218.6 | 229.56 | NP21 | 31.8-33.3 | |||||||
24X-5, 130-130 | 221.1 | 232.06 | NP21 | 33.3-35.4 | |||||||
24X-7, 110-110 | 222.9 | 233.86 | NP21 | 33.3-35.4 | |||||||
24X-CC, 18-28 | 223.25 | 234.21 | NP21 | 33.3-35.4 | |||||||
25X-CC, 19-27 | 233.01 | 243.72 | NP21 | 33.3-35.4 | |||||||
26X-CC, 10-15 | 242.73 | 254.72 | CN: barren | ||||||||
27X-5, 120-120 | 250.10 | 262.09 | NP21 | 33.7-35.4 | |||||||
27X-6, 30-30 | 250.70 | 262.69 | NP19-20 | 33.7-35.4 | |||||||
27X-CC, 13-18 | 251.53 | 263.52 | NP19-20 | 35.4-36.0 | E. spinosum | >30.9-34.7 | |||||
28X-CC, 16-21 | 262.19 | 274.18 | NP19-20 | <36.0 | |||||||
29X-CC, 17-22 | 271.87 | 283.86 | NP19-20 | <36.0 | |||||||
30X-CC, 21-34 | 281.60 | 293.68 | NP19-20 | <36.0 | |||||||
31X-6, 30-30 | 289.50 | 301.49 | NP19-20 | <36.0 | |||||||
31X-7, 30-30 | 291.00 | 302.99 | NP19-20 | 36.0-37.0 | E. spinosum | >30.9-34.7 | |||||
31X-CC, 21-26 | 291.50 | 303.43 | NP19-20 | >36.0? | |||||||
33X-CC, 13-18 | 297.73 | 309.39 | NP18 | 36.1-37.0 | |||||||
35X-CC, 17-20 | 319.91 | 331.90 | NP18 | 36.1-37.0 | E. spinosum | >30.9-34.7 | |||||
36X-CC, 26-34 | 330.12 | 342.11 | CN: barren | ||||||||
37X-CC, 40-45 | 337.16 | 349.15 | NP17 | <38.0 | Diatom: barren | ||||||
38X-4, 130-130 | 346.90 | 357.39 | NP17 | 36.0-38.0 | |||||||
38X-7, 10-10 | 348.70 | 360.69 | NP17 | 38.0-42.0 | |||||||
38X-CC, 8-18 | 349.12 | 361.11 | NN17 | <38.0 | Diatom: barren | ||||||
39X-1, 130-130 | 350.50 | 362.49 | NP16 | >38.0 | |||||||
39X-CC, 12-22 | 358.78 | 370.77 | NP16 | 38.0-42.0 | Diatom: barren | ||||||
40X-CC, 21-31 | 368.55 | 380.54 | NP16 | 38.0-42.0 | |||||||
41X-CC, 0-5 | 372.58 | 384.57 | NP16 | 42.0-43.1 | |||||||
42X-1, 30-30 | 378.40 | 390.39 | NP15 | 43.1-43.7 | |||||||
42X-CC, 22-27 | 387.50 | 399.49 | NP15 | 43.1-43.7 | P12-P14 | ||||||
43X-CC, 29-39 | 397.59 | 409.58 | NP15 | 43.1-43.7 |