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Event details
| Voyage: | IN2020_V01 [details] |
| When: | 2020-02-04 07:28:27 UTC |
| Log: | Geology_Rocks_in2020_v01 |
| Equipment: | Not specified |
| Position: | Latitude: -53.4595 Longitude: 82.2396 Position from underway logging |
| Sample number: | IN2020_V01_D08_003 |
| Dredge: | D08 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes in2020_v01_D08_003 |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black |
| Composition: | intermediate |
| Alteration: | Fresh | altered |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 25 |
| Phenocryst size range (mm): | 1-2 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 0 |
| Sample bagged: | yes |
| Bucket number: | 1 of 2 |
| Rock name: | Vesicular, variably glassy, andesitic lava |
| Original Sample Dimensions: | 9x9x9.5 cm |
| Comments: | Glass looks fresh, but feldspar (probably plagioclase) is altered. Vesicles show flow pattern. This lava is either andesitic or something more evolved. |