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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-27 08:39:11 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -14.7458 Longitude: 160.3558 Position from underway logging |
Sample number: | in2019_v04_D45_002 |
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-dark | white | brown |
Composition: | sedimentary |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
Phenocryst abundance (%): | 30 |
Phenocryst size range (mm): | 1-3 |
Groundmass: | microcrystaline |
Vesicle abundance: | 30-50% |
Vesicle Filling (%): | 10 |
Vesicle fill: | calcite |
Grain size: | pebble (2-64 mm) | cobble (>64 mm) |
Grain shape: | angular |
Sorting: | poor |
Components: | volcanic vesicular |
Cement: | calcite |
Sample bagged: | yes |
Bucket number: | 82 |
Rock name: | Carbonate matrix-supported feldspar phyric basalt clast breccia |
Requested: | UK |
Comments: | Matrix is calcareous grainstone with burrows. Clasts are fresh feldspar phyric basalts and aphyric basalts. The core of the clasts are more fresh than the ring. |