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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
tpr103 | 0 | 0 | 5 | 2 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 3 | 0 | 0 | microphaneritic |
New Ireland volcanic sand | 0 | 0 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | Bismarck |
tpr104 | 1 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | na |
New Ireland pyroxenic placer | 0 | 0 | 1 | 5 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
tpr105 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | na |
New Ireland calcareous | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Bismarck |
tpr106 | 4 | 3 | 2 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
Exotic New Ireland quartz-calcite | 4 | 3 | 2 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | Bismarck |
Slide | Fabric | Possible Origin | Cal. | Quartz | Feldspar | Pyroxene | Amphibole | Opaques | Olivine | Biotite | Muscovite | Epidote | Garnet/ Spinel | Ig./Met. Rocks | Sed. Rocks | Grog | Lithics |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WD_31_16 | tpr103 (New Ireland volcanic sand) | New Ireland | 0 | 0 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | microphaneritic |
WD_31_17 | tpr104 (New Ireland pyroxenic placer) | New Ireland | 1 | 0 | 1 | 5 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | na |
WD_31_19 | tpr104 (New Ireland pyroxenic placer) | New Ireland | 0 | 0 | 1 | 5 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
WD_31_13 | tpr105 (New Ireland calcareous) | New Ireland | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | na |
WD_31_14 | tpr106 (Exotic New Ireland quartz-calcite) | Admiralty | 4 | 3 | 2 | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | na |
Poorly sorted, fine-grained volcanic sands of likely stream (non-local) origin.
Well sorted, fine- to medium-grained placer beach sand, wholly lacking in hornblende, but rich in clinopyroxene and opaque iron oxides.
Well sorted, fine- to medium-grained placer beach sand, wholly lacking in hornblende, but rich in clinopyroxene and opaque iron oxides.
Almost exclusively calcareous temper sand with sparse subspherical hydrous iron oxide grains.
Hybrid (mixed terrigenous-calcareous) beach sand temper of anomalous composition unlikely to derive from anywhere on New Ireland or within the Bismarck Archipelago.