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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-23 22:55:25 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.331 Longitude: 157.3243 Position from underway logging |
| Sample number: | in2019_v04_D36-044 |
| Dredge: | D36 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 2 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light | red | brown | yellow | green |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] | pyroxene |
| Phenocryst abundance (%): | 30 |
| Phenocryst size range (mm): | 1 |
| Groundmass: | microcrystaline | altered |
| Features: | volcanic brecciated |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 50 |
| Vesicle fill: | calcite |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | mixture |
| Sorting: | poor |
| Components: | volcanic non-vesicular |
| Sample bagged: | yes |
| Bucket number: | 64 |
| Rock name: | Altered poorly sorted mafic clast supported breccia |
| Comments: | looks like 3 kinds of pebbles within breccia. White mineral throughout some patches. Basalt altered in different shapes. Fe2O3 alteration in red especially along matrix. Clast supported. Polymictic. |