Information: - Our applications will be disrupted from 2024-05-03 16:30 AEST to 2024-05-03 18:00 AEST Friday due to infrastructure upgrades. We apologize for any inconvenience and appreciate your patience during this maintenance window.
Please login if you have access to particular applications.
Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-13 10:36:44 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -19.4215 Longitude: 155.2847 Position from underway logging |
Sample number: | in2019_v04_D11_011 |
Dredge: | D11 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-light | brown |
Composition: | mafic |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 5-15 |
Groundmass: | microcrystaline |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 5 |
Vesicle fill: | clay |
Alteration: | Mn crust | altered |
Grain size: | sand (<2 mm) | pebble (2-64 mm) |
Grain shape: | angular |
Sorting: | poor |
Components: | volcanic vesicular | volcanic non-vesicular |
Sample bagged: | yes |
Bucket number: | 22 |
Rock name: | Altered polymictic, poorly sorted matrix supported breccia |
Comments: | Matrix supported, Variability in clasts - basalt some phenocrysts, some without, some with vesicles. Red clasts, white clasts that do not react with acid. |