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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-13 09:48:29 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -19.4259 Longitude: 155.2814 Position from underway logging |
Sample number: | in2019_v04_D11_008 |
Dredge: | D11 |
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 | yellow |
Composition: | mafic |
Features: | volcanic brecciated | hyaloclastite |
Vesicle abundance: | 30-50% |
Vesicle Filling (%): | 10 |
Vesicle fill: | clay |
Alteration: | Fresh | Mn crust | altered |
Grain size: | sand (<2 mm) | pebble (2-64 mm) |
Grain shape: | angular |
Sorting: | good |
Components: | volcanic vesicular |
Sample bagged: | yes |
Bucket number: | 21 |
Rock name: | Fresh monomictic matrix-supported vesicular basalt breccia or hyaloclastite? |
Comments: | Monomictic vesicular basalt clasts within an altered volcanic matrix? Possibly a hyaloclastite!? |