Sample: BHM-1-D-14
| Sample ID: | BHM-1-D-14 [1] |
| Station ID: | BHM-1 |
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| Sample type 1: | Tephra Fall |
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| Text Description: | This subsample represents a single shard of the parent sample (we believe from the citation). Tephra samples were prepared using the ‘quick burn’ method at 1 cm contiguous intervals from the associated core. Weighed subsamples of 1 cm³ volume were oven-dried at 105 degrees C for at least 48 h and then combusted in a muffle furnace for 4 h at 550 degrees C. The residual ash from each sample was treated with 10% HCl overnight to remove carbonate material. The remaining sample material were mounted onto slides using Histomount mounting solution, and then examined at 400 × magnification under a polarizing light microscope. Tephra shards were counted from each sample to quantify their concentration as numbers of shards per cm3 of peat. Qualitative observations were made of the colour, shape, size and morphology of the tephra particles. Intervals containing significant numbers of tephra shards were assigned letters according to their tentative correlations: BHM-A: uncertain tephras; BHM-B: Askja 1875; BHM-C: uncertain tephras; BHM-D: Lena tephra (possible); BHM-E: uncertain tephras; BHM-F (BHM-2): WRAe. Refer to Figure 3 of Wang et al (2025) for the approximate stratigraphic position of each sample and to the paper as a whole for additional context. |
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