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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-27 08:42:30 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -14.7485 Longitude: 160.3657 Position from underway logging |
Sample number: | in2019_v04_D45_003 |
Dredge: | D45 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 5 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-light | brown |
Composition: | mafic |
Alteration: | Fresh | Mn crust |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 20 |
Phenocryst size range (mm): | 1-4 |
Groundmass: | microcrystaline |
Features: | other |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 50 |
Vesicle fill: | calcite, clay |
Sample bagged: | yes |
Bucket number: | 82 |
Rock name: | Massive relatively fresh plagioclase-phyric vesicular basalt |
Requested: | UK |
Comments: | Relatively fresh groundmass. Lots of fresh plagioclase phenocrysts. Surrounded by nodular Mn-crust and calcite cement. Lots of vesicles up to 15mm. Vesicles mostly filled by clay and some calcite towards the rims of the sample. |