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Macdonald: Basalt / Picro-Basalt, Shield type, Shield.
Aitutaki: , Shield type, Shield.
Rarotonga: , Shield type, Shield.
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Many fabrics have a range of abundances. The range maximum (top) and minimum (bottom) are shown.
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| None (0) | Minor (1) | Few (2) | Common (3) | Frequent (4) | Major (5) | Very Dominant (6) |
| 0% | 0-5% | 5-15% | 15-30 % | 30-50% | 50-70% | 70-100% |
| Name | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics/ Region |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tpr424 | 0 | 1 | 5 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | microlitic, felsitic, microphaneritic, plutonite |
| Exotic Atiu | 0 | 1 | 5 | 1 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | Cook |
| tpr425 | 0 | 1 | 2 | 6 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic |
| Exotic Mauke | 0 | 1 | 2 | 6 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | Cook |
| Slide | Fabric | Possible Origin | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WD_72_16 | tpr424 (Exotic Atiu) | Exotic | 0 | 1 | 5 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | microlitic, felsitic, microphaneritic, plutonite |
| WD_72_13 | tpr425 (Exotic Mauke) | Tonga | 0 | 1 | 2 | 6 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microlitic, felsitic |
Has plagioclase. Has oxyhornblende and hornblende. Has granitic as well as volcanic rock framents. Exotic.
Exotic pyroxenic. Possibly from Tongatapu.