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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-24 11:03:56 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -11.0041 Longitude: 157.4926 Position from underway logging |
Sample number: | in2019_v04_D36-008 |
Dredge: | D36 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | yellow | green |
Composition: | sedimentary |
Alteration: | altered |
Phenocryst mineralogy: | pyroxene |
Phenocryst abundance (%): | 5 |
Sample bagged: | yes |
Bucket number: | 59 |
Rock name: | Green altered matrix-supported polymictic volcanic clast-bearing breccia |
Comments: | dolorite and other volcanic clasts. Dolorite clasts mostlikely have piroxene. It seems like there are some layers. |
Phenocryst size range (mm): | 1 |
Groundmass: | microcrystaline |
Features: | volcanic brecciated |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 50 |
Vesicle fill: | Mn-oxide (?) |
Grain size: | sand (<2 mm) | pebble (2-64 mm) |
Grain shape: | mixture |
Sorting: | poor |
Cement: | zeolite | other |