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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-12 23:34:01 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -19.439 Longitude: 155.1062 Position from underway logging |
| Sample number: | in2019_v04_D10_010 |
| Dredge: | D10 |
| Dredge Date: | 13/08/2019 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | white | red | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
| Phenocryst abundance (%): | 30-40 |
| Phenocryst size range (mm): | 1-5 mm |
| Groundmass: | microcrystaline | altered |
| Features: | volcanic brecciated |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 30 |
| Vesicle fill: | other, white yellow |
| Alteration: | Mn crust | altered |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | angular |
| Sorting: | poor |
| Components: | volcanic vesicular |
| Sample bagged: | yes |
| Bucket number: | 20 |
| Rock name: | Poorly sorted altered basalt breccia |
| Comments: | white but doesn't react with HCl, microcrystaline, shows vesicles, not filled, crystals |