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Event details
| Voyage: | IN2020_V01 [details] |
| When: | 2020-02-21 14:43:18 UTC |
| Log: | Geology_Rocks_in2020_v01 |
| Equipment: | Not specified |
| Position: | Latitude: -32.5084 Longitude: 101.5319 Position from underway logging |
| Sample number: | IN2020_V01_D15_005 |
| Dredge: | D15 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | yes, in IN2020_V01_D15_005 |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 5 |
| Phenocryst size range (mm): | 2-5 |
| Groundmass: | microcrystaline | altered |
| Mn crust thickness (mm): | <1 |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | clay and other minerals |
| Sample bagged: | yes |
| Bucket number: | 2 of 2 |
| Rock name: | Weakly altered vesicular plagioclase-phyric basalt |
| Original Sample Dimensions: | 17x13x6 cm |
| Comments: | Less abundant in phenocrysts than other samples of D15, and lacks microphenocrysts and clots. Vesicles are more abundant in one half of the sample. Minor fracturing. |