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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-29 09:05:10 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -17.5857 Longitude: 158.4667 Position from underway logging |
Sample number: | in2019_v04_D49_006 |
Dredge: | D49 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | white | red | brown |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 1-5 |
Phenocryst size range (mm): | 2 |
Groundmass: | microcrystaline |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 0 |
Grain size: | cobble (>64 mm) |
Grain shape: | mixture |
Sorting: | poor |
Components: | volcanic vesicular | carbonate/shell |
Cement: | calcite |
Sample bagged: | yes |
Bucket number: | 85 |
Rock name: | Partially altered feldspar phyric basalt breccia |
Comments: | Carbonate supported matrix. Main clast is basalt. Bioturbation - geopetal structure. |