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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-14 18:40:44 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -46.7441 Longitude: 85.1305 Position from underway logging |
Sample number: | IN2020_V01_D13_004 |
Dredge: | D13 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D13_004 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-light | brown | yellow |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 10 |
Phenocryst size range (mm): | 3-7 |
Groundmass: | microcrystaline | altered |
Mn crust thickness (mm): | 1-9 |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 50 |
Vesicle fill: | clay; other |
Sample bagged: | yes |
Bucket number: | 1 of 2 |
Rock name: | moderately altered, vesicular, plagioclase-phyric basalt |
Original Sample Dimensions: | 29x10x23 |
Comments: | magnetic; feldspar phenocrysts and microphenocrysts; minor fracturing; |