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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-21 13:56:42 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -13.2609 Longitude: 154.5582 Position from underway logging |
Sample number: | in2019_v04_D33-019 |
Dredge: | D33 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | brown |
Composition: | sedimentary |
Alteration: | Fresh | Mn crust | altered |
Grain size: | silt |
Grain shape: | rounded |
Sorting: | good |
Components: | carbonate/shell | other |
Sample bagged: | yes |
Bucket number: | 53 |
Rock name: | Mudstone with trace fossils |
Comments: | Mn crust 30 mm thick. 2-6cm long burrows, inside coated with Mn oxide - black veins throughout rock - burrows filled with carbonate mud - Mn oxide coating on inside of burrows with thickness of 0.5-5mm - Mn oxide veins throughout rock - sharp triangular fossil (7mm long) |