Sample: BBL4-D5_480_cm
| Sample ID: | BBL4-D5_480_cm [1] |
| Station ID: | BBL4 |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | |
| Collector: | Wilcox, P. S. |
| Date sampled: | |
| Sample type 1: | Tephra Fall |
| Color: | Black |
| Final unit: | |
| Text Description: | Sub-sample of eight cm-thick black tephra, found at 475 cm. The tephra has a median grain size ranging from silt (25 microns) to very fine sand (120 microns), arranged in multiple fining upward units. Within this unit, magnetic susceptibility spikes to 670 SI 10-5 in BBL4 and 500 SI 10-5 in BBL6. Overlies blue-grey clay and is overlain by silt. Composed of nine distinct, normally graded beds that range from 0.4 cm to 1.2 cm thick. Angular, vesicular fragments. |
| Sample Location: |