Table T33. n-Alkane data obtained from core samples, Hole C0020A.
|
Core, section, interval (cm) |
Depth CSF-B (m) | Lithology |
C17 to C34 n-alkanes (µg/g sed) |
CPI | Pr/Ph | C18/Ph | |
|---|---|---|---|---|---|---|---|
| Top | Bottom | ||||||
| 337-C0020A- | |||||||
| 2R-2, 93.5–94 | 1288.3 | 1288.3 | Coal clast | 1.8 | 16 | — | 2.6 |
| 15R-2, 0–17 | 1920.4 | 1920.6 | Coal | 1.8 | 11 | 3.2 | 3.5 |
| 18R-1, 105–115 | 1946.6 | 1946.7 | Coal | 2.0 | 10 | 2.5 | 3.5 |
| 24R-3, 55–65 | 1993.8 | 1993.9 | Coal | 2.1 | 12 | 5.8 | 2.0 |
| 25R-3, 120–141 | 1999 | 1999.2 | Coal | 0.4 | 10 | 0.6 | 0.1 |
| 25R-4, 0–15 | 1999.2 | 1999.4 | Coal | 13.4 | 7 | 1.7 | 3.5 |
| 2R-4, 4–5.5 | 1289.6 | 1289.7 | Sandstone (rippled) | 0.7 | 14 | 0.5 | 1.3 |
| 14R-2, 105–120 | 1822.5 | 1822.6 | Siltstone | 1.0 | 10 | 0.8 | 0.2 |
| 15R-5, 0–21 | 1923.6 | 1923.8 | Siltstone | 0.7 | 17 | 3.3 | 0.9 |
| 19R-1, 115–141 | 1951.2 | 1951.4 | Siltstone | 0.7 | 10 | 2.7 | 0.7 |
| 28R-3, 0–24 | 2302.8 | 2303.1 | Siltstone | 1.2 | 10 | 0.4 | 0.1 |
| 3R-3, 60–77 | 1372.6 | 1372.8 | Mudstone | 0.4 | 12 | 0.5 | 0.4 |
| 7R-1, 53–65 | 1599.5 | 1599.7 | Mudstone | 0.2 | 11 | 2.2 | 0.8 |
| 9R-4, 0–20 | 1628.4 | 1628.6 | Mudstone | 0.4 | 10 | 0.0 | 0.1 |
| 10R-2, 53–70 | 1631.4 | 1631.6 | Mudstone | 0.0 | 6 | 1.0 | 1.9 |
| 11R-5, 58–75 | 1743.1 | 1743.3 | Mudstone | 0.4 | 4 | 1.0 | 1.3 |
| 12R-7, 15–30 | 1754.7 | 1754.8 | Mudstone | 0.1 | 4 | 0.3 | 0.9 |
| 23R-8, 0–15 | 1989.5 | 1989.6 | Mudstone | 0.1 | 10 | 1.3 | 4.9 |
| 26R-2, 0–9 | 2111.4 | 2111.5 | Shale | 1.4 | 11 | 0.3 | 0.1 |
Carbon preference index (CPI), pristane/phytane ratio, and C18/phytane ratio are discussed in the text. CPI = 2 × ([C25 + C27 + C29 + C31 + C33]/[C24 + C26 + C28 + C30 +C32]) + ([C25 + C27 + C29 + C31 + C33]/[C26 + C28 + C30 + C32 +C34]); Pr/Ph = ratio of pristane to phytane measured on m/z 85 ion chromatogram; C18/Ph = ratio of C18 n-alkane to phytane measured on m/z 85 ion chromatogram.
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