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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-24 01:12:07 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.5185 Longitude: 157.3265 Position from underway logging |
| Sample number: | in2019_v04_D37-010 |
| Dredge: | D37 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | white | yellow |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | pyroxene |
| Phenocryst abundance (%): | 30 |
| Phenocryst size range (mm): | 0.1-3mm |
| Groundmass: | altered | crystalline |
| Features: | volcanic brecciated |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | calcite |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | mixture |
| Sorting: | poor |
| Sample bagged: | yes |
| Bucket number: | 69 |
| Rock name: | Altered polymicitc mafic clast supported breccia |
| Comments: | Mn crust < 0.01mm, basalt casts variously weathered, pyroxene crystals very clear and visible (up to 2mm), clast supported matrix |