Table T1. Stratigraphic, compositional, luminescent, and isotopic data for dolomite samples.
|
Core, section,
interval (cm) |
Water depth (m)
|
Present depth of
horizon (mbsf)
|
Lithology of
host sediment |
Age of
host sediment |
Productivity
|
TOC
(wt%) |
Sedimentation rate
(cm/k.y.) |
Horizon
type |
CL
|
 13C(  PDB)
|
18O ( PDB)
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| 175-1078C- | |||||||||||
| 13H-1, 43-46 | 427 | 111.63 | nrsc | middle to late Pleistocene | Low | ~2.3 | ~60 | Lithified | WL | 9.37 | 5.74 |
| 15X-2, 109-113 | 427 | 131.39 | nrsc | middle to late Pleistocene | Low | ~3.3 | ~60 | Lithified | WL | 8.64 | 5.78 |
| 175-1080A- | |||||||||||
| 7X-1, 5-12 | 2766 | 50.85 | drsc | early to middle Pleistocene | Moderate | ~2.4 | ~10 | Lithified | WL | 14.26 | 5.50 |
| 175-1081A- | |||||||||||
| 17X-1, 5-12 | 791 | 137.05 | drc | late Pliocene | High | ~8.2 | ~15 | Semilithified | L | -3.63 | 5.71 |
| 19X-1, 0-6 | 791 | 155.00 | drc | late Pliocene | High | ~5.3 | ~9 | Semilithified | L | 3.81 | 6.19 |
| 20X-2, 62-67 | 791 | 166.50 | drc | late Pliocene | High | ~4.3 | ~9 | Semilithified | L | 5.24 | 5.86 |
| 20X-2, 86-89 | 791 | 166.70 | drc | late Pliocene | High | ~4.3 | ~9 | Semilithified | L | 5.10 | 6.18 |
| 20X-2, 92-94 | 791 | 168.80 | drc | late Pliocene | High | ~3.8 | ~9 | Semilithified | L | 5.63 | 5.89 |
| 22X-3, 11-15 | 791 | 186.50 | drc | late Pliocene | High | ~4.0 | ~9 | Semilithified | L | 7.64 | 5.61 |
| 22X-3, 29-32 | 791 | 186.60 | drc | late Pliocene | High | ~4.0 | ~9 | Semilithified | L | 7.72 | 5.74 |
| 25X-4, 138-141 | 791 | 218.05 | dbc | late Pliocene | High | ~4.8 | ~9 | Semilithified | WL | 7.40 | 5.71 |
| 175-1082A- | |||||||||||
| 15X-1, 0-8 | 1279 | 199.96 | nrc | late Pliocene | High | ~2.9 | ~21 | Lithified | NL | 12.87 | 6.19 |
| 22X-3, 114-125 | 1279 | 200.20 | nrc | late Pliocene | High | ~2.9 | ~21 | Lithified | NL | 13.25 | 5.44 |
| 36X-1, 5-14 | 1279 | 327.55 | nrc | late Pliocene | High | ~2.4 | ~10 | Lithified | NL | 11.72 | 4.19 |
| 175-1084A- | |||||||||||
| 18X-1, 0-4 | 1992 | 148.35 | nrc | Pleistocene | Moderate | ~3.5 | ~25 | Lithified | NL | 14.50 | 6.00 |
| 18X-1, 4-8 | 1992 | 148.45 | nrc | Pleistocene | Moderate | ~3.5 | ~25 | Lithified | NL | 16.85 | 6.50 |
| 18X-1, 8-15 | 1992 | 149.58 | nrc | Pleistocene | Moderate | ~3.5 | ~25 | Lithified | NL | 16.44 | 5.85 |
| 48X-1, 28-40 | 1992 | 468.55 | do | Pleistocene | Moderate | ~3.8 | ~10 | Lithified | L | 12.17 | 2.87 |
Notes: TOC = total organic carbon, CL = cathodoluminescence, PDB = peedee belemnite standard. Lithology: nrsc = nannofossil-rich silty clay, drsc = diatom-rich silty clay, drc = diatom-rich clay, dbc = diatom-bearing clay, nrc = nannofossil-rich clay, do = diatom ooze. CL rating: WL = weakly luminescent dolomicrite, L = luminescent dolomicrite, NL = nonluminescent dolomicrite. TOC of host sediment at specified depth interval is estimated from onboard calculations.