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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-23 22:25:48 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.2549 Longitude: 157.3074 Position from underway logging |
| Sample number: | in2019_v04_D36-036 |
| Dredge: | D36 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark | white |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] | pyroxene |
| Phenocryst abundance (%): | 10 |
| Phenocryst size range (mm): | 1 |
| Groundmass: | microcrystaline |
| Features: | volcanic brecciated |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 10 |
| Vesicle fill: | Calcite |
| Grain size: | sand (<2 mm) | pebble (2-64 mm) |
| Grain shape: | mixture |
| Sorting: | poor |
| Components: | volcanic non-vesicular |
| Sample bagged: | yes |
| Bucket number: | 63 |
| Rock name: | Altered poorly sorted basalt clast supported breccia |
| Comments: | Basalt altered in different shape. White vein throughout rock. White crystals - doesnt fizz. Clast supported - so cement? |