Type Y (1700-500 BP)

Wikidata ID: Q139047495

Timing unclear. Sherds originally classified as Lapita. 2 classes of rims. One class has internal rounded lips and plain decoration and may be from flat platters. The other class has notched everted rims and rectilinear incision decoration.


Parent ware:

All periods (5000 - 0 BP)


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%

Fabrics:


Name Cal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ SpinelIg./Met. Rocks Sed. Rocks Grog Lithics/ Region
tpr482 0 2 4 1 5 3 0 0 0 0 1 3 0 0 microphaneritic
Exotic Tuam amphibolic 0 0 4 0 2 2 0 0 0 0 0 1 0 0 PNG

Slides:

Slide Fabric Possible OriginWareCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
IL_2_4 tpr482 (Exotic Tuam amphibolic) ? Type Y (1700 - 500 BP) 0 0 4 0 5 2 0 0 0 0 0 3 0 0 microphaneritic
IL_2_3 tpr482 (Exotic Tuam amphibolic) ? Type Y (1700 - 500 BP) 0 2 4 1 2 3 0 0 0 0 1 2 0 0 microphaneritic

IL_2_4

Tuam7_2 Tuam7_2
Sherd 7/2 from Tuam (Tuam). Slide IL_2_4 from I Lilley. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image or full slide in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Type Y style. Contains high levels of amphibole. The amphibole is green to brown and the blades and prisms range from 0.1 to 0.5 mm in length. The angular amphibole grains make up about 10% of the sherd. Plagioclase (<10%) occurs as large rectangular crystals which show growth rings. Some of the grains are partly sericitized. Other plagioclase crystals are small and angular. Magnetite (<1%) .


IL_2_3

Tuam2_1_a Tuam2_1_a
Sherd 2/1 from Tuam (Tuam). Slide IL_2_3 from I Lilley. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image or full slide in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Type Y style. This sherd contains quartz, feldspar, amphibole, pyroxene, magnetite, spinel, rock fragments, ferruginized clay clasts and relict shells. The quartz and feldspar grains (10%) are generally angular and 0.2 mm in length. Amphibole blades (<5%) are green to brown, and less than 0.2 mm across. Magnetite (5%) occurs as rounded grains. Pale green pyroxene crystals are rare. Spinel is an accessory mineral occurring as angular grains up to 0.2 mm.