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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-28 22:05:45 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -17.0394 Longitude: 159.2211 Position from underway logging |
| Sample number: | in2019_v04_D48_006 |
| Dredge: | D48 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 5 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | grey-light | white | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] | pyroxene | other |
| Phenocryst abundance (%): | 10 |
| Phenocryst size range (mm): | <0.5 - 4 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 30-50% |
| Vesicle fill: | carbonate mud |
| Sample bagged: | yes |
| Bucket number: | 83 |
| Rock name: | Highly vesicular olivine phyritic basalt. |
| Comments: | Mn crust 12 mm, phenocrysts are very altered, a lot of mud was washed out of vesicles, vesicle size decreases towards top of rock, irregular shape of vesicles, singular glasy margin |