Sample: MC2
| Sample ID: | MC2 [1] |
| Station ID: | McNeil_Canyon |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | |
| Sample type 1: | Tephra Fall |
| Color: | dark-brown-orange |
| Final unit: | |
| Text Description: | A 5-cm thick, dark-brown-orange, clayey, nearly plastic tephra layer that pinches and swells was sampled 18 '' below the top of a 42'' thick coal bed (D-seam). In some places the layer is nearly crumbly. The color also varies laterally to red-brown. The first 18 '' of coal are crushed charcoal fragments. The coal bed is underlain by a 22 cm thick shale then a 5 cm coal, then siltstone. It was not possible to make a thin section from this sample. |
| Sample Location: |