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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-10 19:17:26 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -21.0716 Longitude: 155.8737 Position from underway logging |
| Sample number: | in2019_v04_D04_025 |
| Dredge: | D04 |
| Dredge Date: | 11/08/19 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 6 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | grey-light | brown | yellow | green |
| Composition: | mafic |
| Phenocryst mineralogy: | olivine[iddingsite] | glass[fresh] | altered |
| Phenocryst abundance (%): | 5-10 |
| Phenocryst size range (mm): | 3-6 |
| Features: | volcanic brecciated |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 85 |
| Vesicle fill: | calcite, zeolite |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | angular |
| Sorting: | poor |
| Components: | glass | scoria | volcanic vesicular |
| Cement: | calcite | zeolite |
| Sample bagged: | yes |
| Bucket number: | 13 |
| Rock name: | limestone matrix poorly sorted basalt breccia |
| Comments: | ranges from scoria to glass, potential fossil inclusions (shell), high degree of rim alteration on glass clasts. |