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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-26 21:01:09 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.6278 Longitude: 159.4634 Position from underway logging |
| Sample number: | in2019_v04_D44-02 |
| Dredge: | D44 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | white | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | olivine[iddingsite] | pyroxene | altered |
| Groundmass: | microcrystaline | altered |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 20 |
| Vesicle fill: | calcite, shells? |
| Grain size: | sand (<2 mm) | pebble (2-64 mm) |
| Grain shape: | mixture |
| Sorting: | poor |
| Components: | volcanic vesicular | volcanic non-vesicular | carbonate/shell |
| Cement: | calcite |
| Sample bagged: | yes |
| Bucket number: | 811 |
| Rock name: | Altered clast spported variably altered basalt-clast conglomerate |
| Comments: | sed-filled burrows, moderately altered basalt with vesicles towards the "outside" of the basalt pebble, subangular. Weakly altered basalt with Fe2O3n alteration, shows feldspar. Very round vesicles filled with dense calcite. Moderate-strongly altered basalt but olivine (iddingsite) visible eventually also pyroxene. Sand sized angular, Fe2O3 oxidised mineral. Gooseneck barnacle in the conglomerate |