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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-03-01 15:21:44 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -33.6386 Longitude: 101.5276 Position from underway logging |
Sample number: | IN2020_V01_D19_010 |
Dredge: | D19 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D19_010 |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | pink |
Composition: | mafic |
Phenocryst abundance (%): | 0 |
Groundmass: | microcrystaline | altered |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 95 |
Vesicle fill: | clay and other minerals |
Sample bagged: | yes |
Bucket number: | 1 of 1 |
Rock name: | Strongly to intensely altered vesicular basalt |
Original Sample Dimensions: | 18x23x12 cm |
Comments: | Groundmass up to 50% pervasively altered and replaced with white and brown/red minerals. Minor fractures/veins. Fractures younger than the main pervasive alteration. Possibly multiple alteration events. Entire rock has a maroon hue. |