Table T3. Lithologic surfaces and their interpretation, Site U1354. (See table notes.)
|
Lithologic surface |
Hole, core, section, interval (cm) |
Depth CSF-A (m) |
Overlying lithology | Nature of significant surface |
Seismic sequence boundary |
Predicted depth (m) |
Preliminary biostratigraphy (Ma) |
|---|---|---|---|---|---|---|---|
| 317- | |||||||
| U1354A-S1 | U1354A-3H-CC, 16 | 13.99 | Shelly mud | Top contact; basal not recovered | U19 | 11 | <0.29 (CN), possibly <0.1 (CN) |
| U1354B-S1 | U1354B-2H-6, 54 | 11.68 | Fining-upward shelly sand | Basal not recovered | U19 | 11 | |
| U1354A-S2 | U1354A-6H-5, 45 | 22.63 | Sand | Possible top contact; liquefied sand | U18 | 22 | <0.29 (CN), possibly <0.1 (CN) |
| U1354B-S2 | U1354B-7H-1, 0 | 20.90 | Sand | Possible top contact; liquefied sand | U18 | 22 | |
| U1354A-S3 | U1354A-11H-3, 30 | 56.64 | Shelly mud | Sharp angular dipping contact | U17 | 51 | 0.29–0.44 (CN) |
| U1354A-S4 | U1354A-13H-4, 20 | 69.60 | Shelly sandy mud | Sharp basal contact; burrowed | U16 | 64 | 0.44–0.91 (CN), >0.78 at 65–69 m (B/M boundary) |
| U1354B-S4 | U1354B-13H-2, 80 | 64.80 | Shelly sandy mud, limestone clast 5 cm long | Sharp basal contact; burrowed | U16 | 64 | |
| U1354A-S5 | U1354A-17H-2, 85 | 80.15 | Muddy shelly sand fines upward | Contact not recovered | U15 | 79 | 1.26–1.34 (best age control on this surface for all sites) |
| U1354B-S5 | U1354B-14H-CC, 15 | 73.54 | Muddy shelly sand | Contact not recovered | U15 | 79 | |
| U1354C-S5 | U1354C-3H-3, 110 | 75.39 | Muddy shelly sand | Sharp contact; burrowed | U15 | 79 | |
| U1354C-S5.1 | U1354C-6X-2, 46 | 93.86 | Muddy shelly sand | Sharp contact; burrowed | U14 | 93 | 1.34–1.69 (CN) |
| U1354C-S6 | U1354C-9X-2, 20 | 117.80 | Muddy shelly sand | Sharp contact; burrowed | U13 | 121 | 1.69–1.81 (CN); Plio/Pleist. boundary picked between 122.20 and 133.37 m; above this between 1.73 and 1.81(CN); below this >2.78 (CN) |
| *U1354C-S7 | U1354C-10X-5, 75 | 132.35 | Muddy shelly sand | Sharp contact; burrowed | U12 | 156 | >2.78 (CN), possibly older than 3.7 |
| U1354C-S7 | U1354C-12X-1, 110 | 145.80 | Muddy shelly sand | Sharp contact; burrowed | U12 | 156 | |
| *U1354C-S7 | U1354C-13X-CC, 5 | 162.76 | Muddy shelly sand | Sharp contact; burrowed | U12 | 156 | |
| U1354C-S7.1 | U1354C-15X-CC, 29 | 181.01 | Shelly sandy mud | Concretions; contact not recovered | U11 | 177 | >2.78 (CN), possibly older than 3.7 |
| U1354C-S8 | U1354C-19X-CC, 22 | 217.80 | Shelly sandy marl | Possible contact at base of CC | U10 | 211 | 3.7 (CN)–4.3 (PF) |
| *U1354C-S8 | U1354C-20X-CC, 42 | 221.82 | Shelly sandy marl | Concretions; contact not recovered | U10 | 211 | |
| *U1354C-S8 | U1354C-22X-3, 40 | 243.90 | Shelly sandy marl | Sharp contact; burrowed | U10 | 211 | |
Notes: * = alternative contact facies for lithologic surface. CN = calcareous nannofossil, PF = planktonic foraminifer. B/M = Brunhes/Matuyama.
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