| Database dump for this sample: |
| Top depth (cm) | 50.0 |
| Bottom depth (cm) | 54.0 |
| Lithology | Mud with highly rhythmic, but faint submm- to mm-scale laminae and common gravel-sized clasts. Moderate opal (around 10 percent), TOC content (around 0.25 percent), and high water content (around 45 percent). Clasts include: quartz, feldspars, granite,basalt, dolerite,metamorphic lithologies (foliated/mylontic granitoids, metasediments, marble). Benthic and planktonic forams present. Common diatoms (0.74 * 10^9 valves/g). |
| Facies interpretation | Common diatom content and gravel clasts alongside the planktonic/benthic foraminifera suggests a short duration period of pelagic sedimentation in open water with iceberg rafting over the core site. Rhythmic laminae suggest traction currents reworking hemipelagic suspension settling sediments or turbidites (see facies Ml). We interpret that the input of terrigenous material has allowed this short-lived interval to be preserved in the stratigraphy, where as higher in the stratigraphic succession (e.g. Facies Mb), sediment starvation (due to a lack of terrigenous sediment supply) combined with bioturbation does not allow for the preservation of such events. |
| Core sample comments | None |
| Carbon type | benthic foraminifera |
| Analysis date | None |
| Chem lab | None |
| Analyst | None |
| Sample preparation method | None |
| AMS lab | Rafter Radiocarbon Lab |
| AMS date | None |
| Analysis ID | NZA50804 |
| Percent carbon | None |
| Fraction modern | None |
| δ13C (‰) | None |
| 14C age (yr) | 8892.0 |
| 14C age uncertainty (yr) | 155.0 |
| 14C comments | None |
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| Calibration results: |
| Calibration curve | Marine20 |
| Reservoir correction (14C yr BP) (mean and st.dev. of all Antarctica calibration samples) (http://calib.org/marine/) | 1141 ± 179 |
| Calibration software | IOSACal (v.0.5.3) |
| Calibrated age 95.45 % HPD interval(s) (yr) | 8561.0 to 7549.0 cal yr BP |
| Calibrated age 68.2 % HPD interval(s) (yr) | 8296.0 to 7792.0 cal yr BP |
| 14C calibration plot |  |
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