Information: - Our applications will be disrupted from 2024-05-03 16:30 AEST to 2024-05-03 18:00 AEST Friday due to infrastructure upgrades. We apologize for any inconvenience and appreciate your patience during this maintenance window.
Please login if you have access to particular applications.
Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-12 23:41:56 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -19.4357 Longitude: 155.1266 Position from underway logging |
| Sample number: | in2019_v04_D10_013 |
| Dredge: | D10 |
| Dredge Date: | 13/08/2019 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 2 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | white | red | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | olivine[iddingsite] | altered |
| Phenocryst abundance (%): | 30-40 |
| Phenocryst size range (mm): | 1-3 |
| Groundmass: | microcrystaline |
| Features: | volcanic brecciated |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 20 |
| Vesicle fill: | white crystals |
| Alteration: | Mn crust | altered |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | angular |
| Sorting: | poor |
| Components: | scoria | volcanic vesicular |
| Sample bagged: | yes |
| Bucket number: | 20 |
| Rock name: | Poorly sorted basalt breccia |
| Comments: | Mn-crust 38 mm, cement doesn't react with HCl, is white and microcrystaline, also shows vesicles and small vesicle fillings |