Table T6. Summary of biostratigraphic age assignments for Site 1091. (See table note.)
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) |
Comment |
---|---|---|---|---|---|---|---|---|---|
177-1091A- | |||||||||
1H-3, 83-83 | 3.83 | 3.83 | T. lentiginosa Subzone c | 0-0.18 | |||||
1H-CC, 9-14 | 6.84 | 6.84 | NN21 | <0.26 | T. lentiginosa Subzone c | 0-0.18 | Omega | 0-0.46 | |
2H-CC, 9-14 | 14.43 | 17.35 | T. lentiginosa Subzone c | 0-0.18 | Omega | 0-0.46 | |||
3H-CC, 12-17 | 25.40 | 27.58 | T. lentiginosa Subzone b | 0.18-0.42 | Omega | 0-0.46 | |||
4H-CC, 9-14 | 34.65 | 37.85 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-2, 140-140 | 38.30 | 40.61 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-5, 130-130 | 42.70 | 45.01 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-6, 55-55 | 43.45 | 45.76 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-CC, 9-15 | 44.09 | 46.40 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
6H-1, 75-75 | 45.65 | 49.12 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
6H-1, 80.5-80.5 | 45.71 | 49.18 | |||||||
6H-1, 85-85 | 45.75 | 49.22 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
6H-1, 135-135 | 46.25 | 49.72 | T. lentiginosa Subzone a | 0.42-0.65 | |||||
6H-CC, 7-17 | 53.97 | 57.44 | NN20 | <0.46 | T. lentiginosa Subzone a | 0.42-0.65 | Omega | 0-0.46 | A. ingens reworked |
7H-3, 26-26 | 56.60 | 60.41 | NN19 | 0.46-0.96 | |||||
7H-CC, 15-20 | 63.71 | 67.52 | T. lentiginosa Subzone a | 0.42-0.65 | |||||
8H-5, 10-10 | 70.00 | 74.89 | NN19 | 0.46-0.88 | CN: reworking | ||||
8H-CC, 15-20 | 70.62 | 75.51 | T. lentiginosa Subzone a | 0.42-0.65 | Psi | 0.46-0.83 | A. ingens reworked | ||
9H-4, 127-127 | 79.17 | 83.62 | NN19 | 0.46-0.88 | CN: high Oligocene-Eocene reworking | ||||
9H-CC, 11-16 | 81.48 | 85.93 | NN19 | 0.46-1.69 | A. ingens Subzone c | 0.65-1.07 | |||
10H-CC, 11-21 | 92.13 | 97.52 | NN19 | 0.46-0.96? | A. ingens Subzone c | 0.65-1.07 | Psi | 0.46-0.83 | |
11H-6, 45-45 | 100.35 | 106.11 | NN19 | 0.46-0.88 | |||||
11H-CC, 17-22 | 101.70 | 107.46 | A. ingens Subzone c | 0.65-1.07 | |||||
12H-1, 13-13 | 102.03 | 109.29 | NN19 | 0.46-0.88 | |||||
12H-CC, 0-10 | 109.25 | 116.51 | A. ingens Subzone c | 0.65-1.07 | Psi | 0.46-0.83 | |||
13H-4, 104-104 | 116.94 | 123.48 | NN19 | 0.88-0.96 | |||||
13H-7, 5-5 | 120.45 | 126.99 | NN19 | >0.88 | |||||
13H-7, 88-88 | 121.28 | 127.82 | NN19 | 0.88-0.96 | |||||
13H-CC, 6-16 | 121.08 | 127.62 | NN19 | 0.88-0.96 | A. ingens Subzone c | 0.65-1.07 | |||
14H-4, 130-130 | 126.70 | 135.31 | NN19 | 0.96-1.08 | |||||
14H-5, 30-30 | 127.20 | 135.81 | NN19 | 0.96-1.08 | |||||
14H-CC, 16-21 | 130.54 | 139.15 | A. ingens Subzone c | 0.65-1.07 | Chi | 0.83-1.92 | |||
15H-4, 60-60 | 135.50 | 145.34 | NN19 | 0.96-1.08 | |||||
15H-5, 10-10 | 136.50 | 146.34 | NN19 | 0.96-1.08 | |||||
15H-5, 136-136 | 137.76 | 147.60 | NN19 | 0.96-1.08 | |||||
15H-CC, 11-21 | 138.37 | 148.21 | A. ingens Subzone b | 1.07-1.3 | |||||
16H-3, 130-130 | 144.20 | 158.06 | NN19 | 1.24-1.46 | Chi | 0.83-1.92 | |||
16H-4, 20-20 | 144.60 | 158.46 | NN19 | 1.24-1.46 | |||||
16H-CC, 11-16 | 148.34 | 162.20 | A. ingens Subzone b | 1.07-1.3 | |||||
17H-5, 121-121 | 156.61 | 169.32 | NN19 | 1.24-1.46 | |||||
17H-5, 145-145 | 156.85 | 169.56 | NN19 | 1.24-1.46 | |||||
17H-CC, 7-14 | 157.75 | 170.46 | A. ingens Subzone b | 1.07-1.3 | |||||
18H-3, 4-4 | 161.94 | 176.43 | NN19 | 1.24-1.46 | |||||
18H-4, 77-77 | 164.17 | 178.66 | NN19 | 1.24-1.46 | |||||
18H-6, 36-36 | 166.76 | 181.25 | NN19 | 1.24-1.46 | |||||
18H-CC, 11-16 | 166.89 | 181.38 | NN19 | 1.24-1.46 | A. ingens Subzone b | 1.07-1.3 | Chi | 0.83-1.92 | |
19H-2, 30-30 | 170.20 | 186.33 | NN19 | 1.24-1.46 | |||||
19H-2, 70-70 | 170.60 | 186.73 | NN19 | 1.24-1.46 | |||||
19H-3, 70-70 | 172.10 | 188.23 | NN19 | 1.24-1.46 | |||||
19H-3, 130-130 | 172.70 | 188.83 | NN19 | 1.24-1.46 | |||||
19H-CC, 9-14 | 175.70 | 191.83 | A. ingens Subzone b | 1.07-1.3 | CN: barren | ||||
20H-1, 90-90 | 178.80 | 196.24 | NN19 | >1.46 | |||||
20H-4, 60-60 | 183.00 | 200.44 | NN19 | 1.46-1.69 | |||||
20H-CC, 8-15 | 184.73 | 202.17 | A. ingens Subzone b | 1.07-1.3 | Chi | 0.83-1.92 | CN: barren | ||
21H-2, 53-53 | 189.43 | 206.32 | NN19 | 1.46-1.69 | |||||
21H-CC, 9-14 | 195.01 | 211.90 | A. ingens Subzone a | 1.3-1.8 | CN: barren | ||||
22H-5, 120-120 | 204.10 | 223.24 | NN19 | 1.46-1.69 | |||||
22H-CC, 8-13 | 204.24 | 223.38 | NN19 | 1.46-1.69 | A. ingens Subzone a | 1.3-1.8 | Chi | 0.83-1.92 | |
23H-4, 30-30 | 211.20 | 231.60 | 1.46-1.69 | ||||||
23H-5, 110-110 | 213.50 | 233.90 | NN19 | >1.69 | |||||
23H-CC, 8-13 | 213.68 | 234.08 | NN19 | >1.69 | A. ingens Subzone a | ?ca. 1.5 | |||
24H-CC, 10-15 | 225.49 | 246.96 | A. ingens Subzone a | 1.3-1.8 | Chi | 0.83-1.92 | CN: barren | ||
25H-CC, 0-10 | 235.14 | 256.61 | A. ingens Subzone a | 1.3-1.8 | CN: barren | ||||
26H-2, 33-33 | 236.73 | 258.42 | >1.69 | CN: no zonation | |||||
26H-3, 70-70 | 238.60 | 260.29 | A. ingens Subzone a | 1.3-1.8 | |||||
26H-4, 105-105 | 240.45 | 262.14 | >1.69 | CN: no zonation | |||||
26H-5, 70-70 | 241.60 | 263.29 | P. barboi | 1.8-2.0 | |||||
26H-CC, 18-23 | 244.03 | 265.72 | P. barboi | 1.8-2.0 | Chi | 0.83-1.92 | CN: barren | ||
27H-3, 70-70 | 248.10 | 269.35 | P. barboi | 1.8-2.0 | |||||
27H-4, 62-62 | 249.52 | 270.77 | >1.69 | ||||||
27H-6, 70-70 | 252.60 | 273.85 | P. barboi | 1.8-2.0 | |||||
27H-7, 70-70 | 254.10 | 275.35 | >1.69 | ||||||
27H-CC, 11-16 | 254.23 | 275.48 | >1.69 | P. barboi | 1.8-2.0 | ||||
28H-2, 70-70 | 256.10 | 278.57 | T. kolbei/F. matuyamae | 2.0-2.5 | |||||
28H-5, 70-70 | 260.60 | 283.07 | T. kolbei/F. matuyamae | 2.0-2.5 | |||||
28H-CC, 22-27 | 263.22 | 285.69 | T. kolbei/F. matuyamae | 2.0-2.5 | Phi | 1.92-2.42 | CN: barren | ||
29H-4, 90-90 | 268.80 | 291.01 | T. kolbei/F. matuyamae | 2.0-2.5 | |||||
29H-6, 120-120 | 272.10 | 294.31 | T. kolbei/F. matuyamae | 2.0-2.5 | |||||
29H-CC, 13-18 | 273.15 | 295.36 | T. vulnifica | 2.5-2.63 | CN: barren | ||||
30H-2, 45-45 | 274.85 | 297.32 | T. vulnifica | 2.5-2.63 | |||||
30H-6, 8-8 | 280.48 | 302.95 | T. vulnifica | 2.5-2.63 | |||||
30H-CC, 10-15 | 281.43 | 303.90 | T. vulnifica | 2.5-2.63 | Upsilon | 2.42-2.61 | CN: barren | ||
31H-1, 71-71 | 283.11 | 305.58 | T. vulnifica | 2.5-2.63 | |||||
31H-5, 112-112 | 289.52 | 311.99 | T. vulnifica | 2.5-2.63 | |||||
31H-CC, 13-18 | 289.76 | 312.23 | lower T. insigna | 2.63-3.3 | CN: barren | ||||
32H-1, 40-40 | 292.30 | 314.77 | lower T. insigna | 2.63-3.3 | |||||
32H-3, 68-68 | 295.58 | 318.05 | lower T. insigna | 2.63-3.3 | |||||
32H-4, 130-130 | 297.70 | 320.17 | lower T. insigna | 2.63-3.3 | |||||
32H-CC, 30-35 | 299.17 | 321.64 | lower T. insigna | 2.63-3.3 | Upsilon | 2.61- | CN: barren | ||
33H-1, 48-48 | 301.88 | 324.35 | lower T. insigna | 2.63-3.3 | |||||
33H-2, 30-31 | 303.20 | 325.67 | lower T. insigna | 2.63-3.3 | |||||
33H-3, 90-90 | 305.30 | 327.77 | upper F. interfigidaria | > 3.3 | |||||
33H-4, 116-116 | 307.06 | 329.53 | upper F. interfigidaria | > 3.3 | |||||
33H-5, 70-70 | 308.10 | 330.57 | upper F. interfigidaria | > 3.3 | |||||
33H-6, 120-120 | 310.10 | 332.57 | upper F. interfigidaria | > 3.3 | |||||
33H-CC, 21-26 | 310.35 | 332.82 | upper F. interfigidaria | > 3.3 | Upsilon | 2.61- | CN: barren | ||
177-1091B- | |||||||||
1H-CC, 9-14 | 7.74 | 7.74 | T. lentiginosa Subzone c | 0-0.18 | Omega | 0-0.46 | |||
2H-CC, 10-15 | 14.49 | 14.71 | T. lentiginosa Subzone c | 0-0.18 | |||||
3H-CC, 9-14 | 23.82 | 22.68 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
4H-CC, 9-14 | 34.50 | 33.58 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-CC, 9-14 | 43.47 | 42.61 | T. lentiginosa Subzone b | 0.18-0.42 | Omega | 0-0.46 | |||
6H-CC, 9-14 | 54.04 | 53.07 | T. lentiginosa Subzone a | 0.42-0.65 | |||||
7H-CC, 8-13 | 64.44 | 63.25 | T. lentiginosa Subzone a | 0.42-0.65 | |||||
8H-CC, 9-14 | 72.26 | 74.17 | A. ingens Subzone c | 0.65-1.07 | |||||
9H-CC, 11-16 | 82.88 | 83.55 | A. ingens Subzone c | 0.65-1.07 | Psi | 0.46-0.83 | |||
10H-CC, 9-14 | 91.70 | 93.05 | A. ingens Subzone c | 0.65-1.07 | |||||
11H-CC, 15-20 | 99.50 | 101.36 | A. ingens Subzone c | 0.65-1.07 | |||||
12H-CC, 0-10 | 111.42 | 113.47 | A. ingens Subzone c | 0.65-1.07 | |||||
13H-CC, 10-15 | 122.09 | 124.20 | A. ingens Subzone c | 0.65-1.07 | Chi | 0.83-1.92 | |||
14H-CC, 20-25 | 127.07 | 130.59 | NN19 | 0.96-1.08 | A. ingens Subzone c | 0.65-1.07 | |||
15H-CC, 11-16 | 139.86 | 142.57 | A. ingens Subzone c | 0.65-1.07 | |||||
16H-CC, 10-15 | 148.11 | 153.12 | A. ingens Subzone b | 1.07-1.3 | |||||
17H-CC, 5-10 | 156.85 | 163.07 | A. ingens Subzone b | 1.07-1.3 | Chi | 0.83-1.92 | |||
18H-CC, 9-14 | 168.07 | 176.67 | NN19 | 1.24-1.46 | A. ingens Subzone b | 1.07-1.3 | |||
19H-CC, 0-5 | 177.37 | 188.58 | A. ingens Subzone b | 1.07-1.3 | |||||
20H-CC, 13-17 | 185.33 | 198.45 | A. ingens Subzone b | 1.07-1.3 | |||||
21H-CC, 9-16 | 196.21 | 209.68 | A. ingens Subzone a | 1.3-1.8 | Chi | 0.83-1.92 | CN: barren | ||
22H-CC, 13-18 | 205.53 | 220.55 | A. ingens Subzone a | 1.3-1.8 | CN: barren | ||||
23H-CC, 9-16 | 213.72 | 228.30 | A. ingens Subzone a | 1.3-1.8 | CN: barren | ||||
24H-CC, 0-6 | 219.13 | 234.71 | >1.69 | A. ingens Subzone a | 1.3-1.8 | CN: no zonation | |||
25H-CC, 8-14 | 233.34 | 248.57 | A. ingens Subzone a | 1.3-1.8 | Chi | 0.83-1.92 | |||
26H-CC, 10-15 | 243.08 | 260.35 | A. ingens Subzone a | 1.3-1.8 | |||||
27H-CC, 12-17 | 250.88 | 269.85 | P. barboi | 1.8-2.0 | Chi | 0.83-1.92 | |||
28H-CC, 20-25 | 255.60 | 275.43 | P. barboi | 1.8-2.0 | Chi | 0.83-1.92 | |||
29H-CC, 11-16 | 268.87 | 285.04 | T.kolbei/F. matuyamae | 2.0-2.5 | Phi | 1.92-2.42 | |||
177-1091C- | |||||||||
1H-CC, 7-12 | 3.90 | 3.90 | NN21 | <0.26 | T. lentiginosa Subzone c | 0-0.18 | Omega | 0-0.46 | |
177-1091D- | |||||||||
1H-CC, 0-10 | 3.51 | 11.50 | NN21 | <0.26 | T. lentiginosa Subzone c | 0-0.18 | |||
2H-CC, 15-20 | 6.62 | 18.54 | T. lentiginosa Subzone c | 0-0.18 | |||||
3H-CC, 9-14 | 17.02 | 27.43 | T. lentiginosa Subzone b | 0.18-0.42 | Omega | 0-0.46 | |||
4H-CC, 6-11 | 27.45 | 37.23 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
5H-CC, 11-16 | 36.17 | 47.96 | NN20 | 0.26-0.46 | T. lentiginosa Subzone b | 0.18-0.42 | |||
6H-CC, 12-17 | 49.80 | 58.80 | T. lentiginosa Subzone a | 0.42-0.65 | |||||
7H-CC, 10-15 | 58.99 | 67.57 | A. ingens Subzone c | 0.65-1.07 | Psi | 0.46-0.83 | |||
8H-CC, 10-15 | 67.83 | 74.73 | NN19 | >0.46 | A. ingens Subzone c | 0.65-1.07 | |||
9H-CC, 10-15 | 79.74 | 89.53 | A. ingens Subzone c | 0.65-1.07 | |||||
10H-CC, 9-14 | 87.28 | 99.44 | A. ingens Subzone c | 0.65-1.07 | |||||
11H-CC, 25-30 | 96.85 | 109.50 | A. ingens Subzone c | 0.65-1.07 | |||||
12H-CC, 28-35 | 107.19 | 120.00 | A. ingens Subzone c | 0.65-1.07 | |||||
13H-CC, 9-16 | 116.62 | 130.27 | A. ingens Subzone c | 0.65-1.07 | |||||
14H-CC, 0-6 | 126.60 | 140.40 | A. ingens Subzone c | 0.65-1.07 | |||||
15H-CC, 7-14 | 136.13 | 151.60 | NN19 | 1.08-1.24 | A. ingens Subzone b | 1.07-1.3 | Chi | 0.83-1.92 | |
16H-CC, 9-14 | 145.60 | 161.57 | A. ingens Subzone b | 1.07-1.3 | |||||
17H-CC, 8-15 | 155.24 | 172.96 | A. ingens Subzone b | 1.07-1.3 | |||||
18H-CC, 8-15 | 163.95 | 182.86 | NN19 | >1.24 | A. ingens Subzone b | 1.07-1.3 | |||
19H-CC, 14-19 | 173.24 | 193.93 | A. ingens Subzone b | 1.07-1.3 | Chi | 0.83-1.92 | |||
20H-CC, 10-17 | 182.89 | 205.32 | A. ingens Subzone b | 1.3-1.8 | |||||
21H-CC, 9-16 | 193.33 | 217.03 | A. ingens Subzone a | 1.3-1.8 | |||||
22H-CC, 12-18 | 202.42 | 226.75 | NN19 | >1.46 | A. ingens Subzone a | 1.3-1.8 | Chi | 0.83-1.92 | |
177-1091E- | |||||||||
1H-CC, 10-15 | 4.19 | 12.31 | NN21 | <0.26 | T. lentiginosa Subzone c | 0-0.18 | |||
2H-CC, 0-10 | 9.52 | 19.54 | T. lentiginosa Subzone c | 0-0.18 | Omega | 0-0.46 | |||
3H-CC, 10-15 | 19.46 | 28.47 | NN20? | <0.46 | T. lentiginosa Subzone b | 0.18-0.42 | |||
4H-CC, 9-14 | 27.02 | 36.02 | T. lentiginosa Subzone b | 0.18-0.42 | Omega | 0-0.46 | |||
5H-CC, 6-11 | 39.78 | 48.43 | T. lentiginosa Subzone b | 0.18-0.42 | |||||
6H-CC, 12-17 | 47.17 | 60.53 | T. lentiginosa Subzone a | 0.42-0.65 | Psi | 0.46-0.83 |
Notes: CN = calcareous nannofossil. This table is also available in ASCII format in the TABLES directory.