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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-12 23:40:06 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -19.4347 Longitude: 155.1219 Position from underway logging |
Sample number: | in2019_v04_D10_012 |
Dredge: | D10 |
Dredge Date: | 13/08/2019 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-dark | red | yellow |
Composition: | mafic |
Phenocryst mineralogy: | feldspar | amphibole |
Phenocryst abundance (%): | 10 |
Phenocryst size range (mm): | 15 |
Groundmass: | microcrystaline | altered |
Features: | volcanic brecciated |
Vesicle abundance: | 30-50% |
Vesicle Filling (%): | 35 |
Vesicle fill: | calcite |
Alteration: | Mn crust |
Sample bagged: | yes |
Bucket number: | 20 |
Rock name: | Olivine feldspar phyric vesicular basalt |
Requested: | UK |
Comments: | Phenocrysts of potentially fresh feldspar and altered olivine, vesicle filling with calcite |