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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-23 23:21:50 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.3991 Longitude: 157.3413 Position from underway logging |
| Sample number: | in2019_v04_D36-049 |
| Dredge: | D36 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light | white | red |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | pyroxene | altered |
| Groundmass: | microcrystaline | altered |
| Features: | volcanic brecciated |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 30 |
| Vesicle fill: | Clay |
| Grain size: | cobble (>64 mm) |
| Grain shape: | rounded |
| Sorting: | good |
| Components: | volcanic non-vesicular |
| Sample bagged: | yes |
| Bucket number: | 66 |
| Rock name: | altered feldspar rich basalt clasts |
| Comments: | eventually part of breccia. Red alteration. Crystallised veins. Basalt variously altered, more alteration on the rim of the rock. |