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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-23 22:25:48 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -10.2549 Longitude: 157.3074 Position from underway logging |
Sample number: | in2019_v04_D36-036 |
Dredge: | D36 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-dark | white |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | olivine[iddingsite] | pyroxene |
Phenocryst abundance (%): | 10 |
Phenocryst size range (mm): | 1 |
Groundmass: | microcrystaline |
Features: | volcanic brecciated |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 10 |
Vesicle fill: | Calcite |
Grain size: | sand (<2 mm) | pebble (2-64 mm) |
Grain shape: | mixture |
Sorting: | poor |
Components: | volcanic non-vesicular |
Sample bagged: | yes |
Bucket number: | 63 |
Rock name: | Altered poorly sorted basalt clast supported breccia |
Comments: | Basalt altered in different shape. White vein throughout rock. White crystals - doesnt fizz. Clast supported - so cement? |