Please login if you have access to particular applications.
Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-18 03:28:09 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.2782 Longitude: 156.1482 Position from underway logging |
| Sample number: | in2019_v04_D25_003 |
| Dredge: | D25 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 12 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light | white | red | brown | yellow |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | altered |
| Groundmass: | microcrystaline | altered |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 40 |
| Vesicle fill: | clacite, clay |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 36 |
| Rock name: | Altered vesicular basalt |
| Comments: | Mn-crust 40 - 100 mm, Mn-altered minerals, hexagonal shape, could be pyroxene? Aleration varies -> brown groundmass and light-grey groundmass. Alteration also appears in layers in light-grey groundmass. |