Table T2. Sequences drilled during Expedition 317. (See table notes.)
|
Seismic sequence boundary |
Predicted age (Ma) |
Site U1353 | Site U1354 | Site U1351 | Site U1352 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Predicted depth (mbsf) |
Depth CSF-A (m) |
Preliminary age (Ma) |
Predicted depth (mbsf) |
Depth CSF-A (m) |
Preliminary age (Ma) |
Predicted depth (mbsf) |
Depth CSF-A (m) |
Preliminary age (Ma) |
Predicted depth (mbsf) |
Depth CSF-A (m) |
Preliminary age (Ma) | ||
| U19 | 0.1 | 12 | <0.29, possibly <0.1 (CN) | 11 | <0.29, possibly <0.1 (CN) | 17 | <0.29; possibly <0.1 (CN) | 68 | <0.29; possibly <0.1 (CN) | ||||
| U18 | 0.3 | 26 | <0.29, possibly <0.1 (CN) | 22 | <0.29, possibly <0.1 (CN) | 31 | <0.29; possibly <0.1 (CN) | 142 | 0.29–0.44 (CN) | ||||
| U17 | 0.7 | 59 | 0.29–0.44 (CN) | 51 | 0.29–0.44 (CN) | 51 | 0.29–0.44 (CN), >0.6 (BF) | 195 | 0.44–0.91 (CN) | ||||
| U16 | 1.1 | 72 | 0.44–1.01 (CN) | 64 | 0.44–0.91 (CN) | 64 | 0.44–1.01 (CN), >0.6 (BF) | 249 | 0.44–0.91 (CN) | ||||
| 65–69 | >0.78 (B/M boundary) | 266.92 | 0.91 (CN) | ||||||||||
| U15 | 1.4 | Absent | 79 | 1.26–1.34 (best age for U15) | 86 | 1.34–1.69 (CN) | 428 | 1.56–1.69 (CN) | |||||
| U14 | 1.7 | 91 | 1.34–1.56 (CN) | 93 | 1.34–1.69 (CN) | 103 | 1.34–1.69 (CN) | 448 | 1.56–1.69 (CN) | ||||
| U13 | 2.4 | 112 | 1.69–1.73 (CN) | 121 | 1.69–1.81 (CN) | 135 | Above 1.69–1.81 (CN) | 500 | 1.69 (1.73?)–1.81 | ||||
| Above 1.73–1.81 (CN) | |||||||||||||
| 121.16–135.71 | Pleistocene/Pliocene boundary | 122.20–133.37 | Pleistocene/Pliocene boundary | 134.48–147.55 | Pleistocene/Pliocene boundary | 504.14–507.09 | Pleistocene/Pliocene boundary | ||||||
| 135.71 | >2.78 (CN) | Below >2.78 (CN) | Below ?>2.7 (PF) | Below >?2.7 (PF) | |||||||||
| U12 | 2.6 | 151 | 3.7 (CN)–4.3 (PF) | 156 | >2.78 (CN) possibly >3.7 | 166 | ?>2.7 (PF) | Absent | 542.58 | >2.78 (CN) | |||
| U11 | 3.6 | 171 | 3.7 (CN)–4.3 (PF) | 177 | >2.78 (CN) possibly >3.7 | 195 | ?>2.7 (PF) | 769 | >2.78 (CN) | ||||
| U10 | 3.65 | 192 | 3.7 (CN)–4.3 (PF) | 211 | 3.7 (CN)–4.3 (PF) | 237 | 3.7 (CN)–4.3 (PF) | Absent | 889.64 | 3.7 (CN)–4.3 (PF) | |||
| U9 | 3.7 | 241 | 3.7 (CN)–4.3 (PF) | 279 | 3.7 (CN)–4.3 (PF) | 312 | 3.7 (CN)–4.3 (PF) | 970 | 3.7 (CN)–4.3 (PF) | ||||
| U8 | 5 | 290 | >4.3 (PF) | 344 | 3.7 (CN)–4.3 (PF) | 394 | 4.3–5.3 (PF) | 1136 | 3.7 (CN)–4.3 (PF) | ||||
| 1151.22 | 4.3 (PF) | ||||||||||||
| U7 | 9 | 400 | >4.3 (PF) | 467 | Not penetrated | 614 | 4.3–5.3 (PF) | 1251 | 4.49–5.3 (PF) | ||||
| 819.12–822.69 | Pliocene/Miocene boundary (5.3 Ma) | 1266.38–1283.95 | Pliocene/Miocene boundary (5.3 Ma) | ||||||||||
| New u/c | 1394.62–1409.66 | 10.58 below | |||||||||||
| U6 | 10.4 | 491 | >4.3 (PF) | 713 | Not penetrated | 895 | 5.6–7.07 (PF) | 1428 | 10.58–10.91 (PF) | ||||
| New u/c | 518.66 | Below u/c >12.03 (CN) | New u/c | 998.34–1005.34 | Below u/c: 10.50–10.91 (PF) | New u/c or U5? | 1486.8–1496.5 | 12.98–13.33 (PF) | |||||
| 1024 (TD) | 10.50–10.91 (PF) | ||||||||||||
| U5 | 11.3 | 597 | middle Miocene assemblage | 1073 | Absent? | ||||||||
| U4 | 12.4 | 679 | Not penetrated | 1153 | Not penetrated | Absent? | |||||||
| : | : | ||||||||||||
| : | : | ||||||||||||
| : | : | ||||||||||||
| DLS | 28 | Not penetrated | 1647 | 13.53–15.80 (CN) | |||||||||
| 1848.49 | ~19 above MP | ||||||||||||
| MP = Green | ? | Not penetrated | 1824 | ~1850 | |||||||||
| 1852.7 | 30.1–32.0 below MP | ||||||||||||
| TD | 1924.26 | 35.2 (CN)–36.0 (PF) | |||||||||||
Notes: CN = ages derived from nannofossils, PF = ages derived from planktonic foraminifers, BF = ages derived from benthic foraminifers. u/c = unconformity. TD = total depth. MP = Marshall Paraconformity ("Green" horizon of industry interpreters), DLS = seismic downlap surface originally thought to be MP, B/M = Brunhes/Matuyama.
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