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Event details
| Voyage: | IN2020_V01 [details] |
| When: | 2020-02-21 18:28:41 UTC |
| Log: | Geology_Rocks_in2020_v01 |
| Equipment: | Not specified |
| Position: | Latitude: -32.3876 Longitude: 101.7616 Position from underway logging |
| Sample number: | IN2020_V01_D09_032 |
| Dredge: | D09 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | yes, in IN2020_V01_D09_032 |
| Number of photos: | 7 |
| Sample sawn: | Yes |
| Colour: | grey-light | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst abundance (%): | 0 |
| Groundmass: | altered | crystalline |
| Mn crust thickness (mm): | 8 |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | Black mineral |
| Sample bagged: | yes |
| Bucket number: | 6 of 6 |
| Rock name: | Weak to moderately altered fine-grained basalt |
| Original Sample Dimensions: | 37.5x34x23 cm |
| Comments: | Partial sample kept. Small zone of concentrated vesicles (area ~5x2 cm), mica-alterated pseudomorphs after phenocrysts (~10% abundance, 2-4 mm size). Minor fracturing. |