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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-23 23:03:57 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.3531 Longitude: 157.3298 Position from underway logging |
| Sample number: | in2019_v04_D36-045 |
| Dredge: | D36 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark | red | yellow |
| Composition: | sedimentary |
| Alteration: | Mn crust |
| Phenocryst mineralogy: | feldspar | pyroxene |
| Phenocryst abundance (%): | 20 |
| Phenocryst size range (mm): | 1 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | calcite |
| Grain size: | cobble (>64 mm) |
| Grain shape: | angular |
| Sorting: | poor |
| Components: | volcanic vesicular | volcanic non-vesicular |
| Sample bagged: | yes |
| Bucket number: | 64 |
| Rock name: | Feldspar - pyroxene - phyric basalt cobble |
| Comments: | Swallow-tail skeletal feldspar phenocrysts. 1mm sized pyroxene phenocrysts. A few clasts of basalt in poorly sorted matrix containing mafic crystals |