Sio ware (600-0 BP)

Wikidata ID: Q139079428

Contains Sio, Gitua and Sialum pottery. Lilley breaks this group into 2 stages (3 if you include Ancestral Sio).

Parent ware:

Non-coiled - Morobe (500 - 0 BP)

Child wares/s:

uro (Sio) (300 - 0 BP)

uro (Gitua) (300 - 0 BP)

uro (Sialum) (300 - 0 BP)

Slides:

IL_2_59

Sio style sherd. CAUTION: Section less than 30microns. The pyroxene, Less than 5% forms elongate angular grains up to 0.3 mm in length. Angular feldspar grains (<5%) are widely scattered through the clay. There are a small number of dark brown to black ferruginized clasts. Angular rock fragments are composed of plagioclase laths and altered glass. There are some large fragments, up to 2 mm in length, which are composed of fine particles of clay, feldspar and brown iron oxide.

IL_2_45

Sio style sherd. CAUTION: Section less than 30microns. Pyroxene crystals are elongate, up to 0.4 mm in length and are the dominant temper. Small amounts of plagioclase ranging in size from 0.1 to 0.3 mm in length are also present. The clay is dark brown.

IL_2_33

Sio style sherd. CAUTION: Section less than 30microns. Pyroxene crystals are generally 0.3 mm in length. There is also minor amounts of altered volcanic rock fragments up to 1 mm across. Ferruginized clay clasts up to 0.5 mm across and small angular feldspar grains. The clay is dark red brown.

IL_2_67

Sio style sherd. "CAUTION: Section less than 30microns. Pyroxene occurs as elongate blades and short stubby crystals ranging from 0,1 to 0.4 mm in length. Rectangular and angular plagioclase crystals, show weak seritization. Angular rock fragments generally contain plagioclase crystals, altered pyroxene crystals and opaques, all of which are less than 0.1 mm in length. Rounded red clay pellets are up to 0.3 nm in diameter. The clay is dark red brown.

IL_2_57

Sio style sherd. CAUTION: Section less than 30microns. Pyroxene grains occur as elongate blades, up to 0.5 mm in length, angular stubby grains 0.2 mm in length, and as well developed crystals up to 0.3 mm across. Small angular plagioclase grains. Rock fragments composed of plagioclase crystals up to 0.3 nm in length are rare. Volcanic rock fragments are generally less than 0.2 mm in length and composed of opaques, clay and relict feldspar.

IL_2_65

Sio style sherd. CAUTION: Section less than 30microns. Pyroxene crystals are abundant and make up most of the sample. They are closely packed, angular and about 0.3 mm in length. Plagioclase crystals are a minority. Opaque minerals are rare The clay is red brown.

IL_2_60

Sio style sherd. CAUTION: Section less than 30microns. Contains abundant pyroxene and smaller amounts of volcanic rock fragments, plagioclase crystals and clay.

IL_2_29

Sio style sherd. CAUTION: Section less than 30microns. Pyroxene crystals range from 0.1 to 0.5 mm in length. Plagioclase crystals are angular and less than 0.2 mm in length. Volcanic rock fragments are less than 0.5 mm in length and contain relict plagioclase, altered glass and mafic minerals and fine opaques. The clay is dark brown.

IL_1_17

Sio style sherd. CAUTION: Section less than 30microns. Closely packed pyroxene grains are about 0.3 mm in length. There are some altered volcanic rock fragments and iron oxides. Small angular plagioclase grains are accessory.

IL_2_19

Sio style sherd. CAUTION: Section less than 30microns. Shelly fragments are generally subrounded and less than 1 mm in diameter. Pyroxene grains are up to 0.3 mm in length. Plagioclase occurs as angular grains less than 0.2 mm in length. There is also accessory iron oxides and red clay pellets. The clay is red brown

IL_2_25

Sio style sherd. CAUTION: Section less than 30microns. Shelly fragments, are up to 1 mm in length. Pyroxene crystals, plagioclase crystals range in size from <0.1 up to 0.2 mm in length. There is also accessory iron oxide grains and the clay is red brown.

IL_2_20

Sio style. CAUTION: Section less than 30microns. Pyroxene grains (5%) are generally less than 0.4 m in length. Plagioclase laths (5%) are less than 0.2 mm in length. There are some large volcanic rock fragments made up of abundant plagioclase laths, minor pyroxene and fine grained opaques in a hypocrystallne texture. Accessory iron oxide and red ferruginized clay pellets are also present. The clay is dark brown.

IL_2_61

Sio style. CAUTION: Section less than 30microns. Pyroxene crystals (<5%) are pale green to brown widely scattered and about 0.3 mm across. Volcanic rock fragments (<5%) are angular and up to 0.5 mm across. They contain plagioclase laths, opaques and altered glass. Red brown clay clasts up to 1 mm across contain small crystals of plagioclase and iron oxide. Rounded iron oxide grains make tp less than 2% of the sherd. The clay is red brown.

IL_1_18

Sio style. CAUTION: Section less than 30microns. This dark red to black sherd contains abundant quartz and plagioclase up to 0.1 mm in length. There are some large pyroxene and volcanic rock fragments up to 0.4 mm in length but these grains are only accessory.

IL_1_31

Sio style. CAUTION: Section less than 30microns. Pyroxene grains (<10%) are generally about 0.3 mm in length. Plagioclase grains (<5%) are less than 0.2 nm in length. There are some volcanic rock fragments, up to 0.7 mm across which are mainly composed of plagioclase laths, fine opaques and altered glass. This sherd also contains accessory iron oxides and red ferruginized grains.

IL_1_15

Sio style. CAUTION: Section less than 30microns. Pyroxene crystals are less than 0.5 mm in length and make up about 5% of the sherd. Plagioclase grains are less than 0.2 mm in diameter and make up less than 5%. There are also some volcanic rock fragments, ferruginized clasts and opaque minerals. The clay is dark brown.

IL_2_26

Sio style. CAUTION: Section less than 30microns. Pyroxene crystals are generally 0.5 mm in length and make up about 10% of the sherd. Altered volcanic rock fragments 5% are up to 0.5 mm in length and contain plagioclase laths, altered glass and mafic minerals. There are some red ferruginized clasts, the brown clay also contains small amounts of fine quartz and feldspar.

IL_1_12

Sio style. CAUTION: Section less than 30microns. Pyroxene grains (<5%) are up to 0.5 mm in length. There are some large clasts more than 1 mm in length which resemble previous pot fragments. There are some red to black ferruginized grains and volcanic rock fragments. There is a small amount of fine grained quartz and feldspar in the brown clay.

IL_2_39

Sio style. CAUTION: Section less than 30microns. Pyroxene crystals (<5%) are generally 0.2 mm in length and there are some large ones up to 0.5 mm in length. There is some altered volcanic rock fragments up to 0.5 mm in length, contain thin plagioclase crystals and yellow brown altered glass. Opaque minerals (5%) are less than 0.2 mm in length. There are some red ferruginized clasts up to 0.4 m in length and brown ferruginized clay clasts up to 0.1 mm in diameter. The clay is a pale brown.

IL_1_28

Sio style. CAUTION: Section less than 30microns. Pyroxene grains (<5%) are up to 0.5 mm in length. There are minor chert fragments, red ferruginized clasts and iron oxide grains. The clay is pale brown and contains abundant fine grained quartz and feldspar. Volcanic rock fragments are rare.

IL_1_56

Pyroxene grains (10%).Quartz and feldspar grains (<10%). There are some hypocrystalline volcanic rock fragments which contain large pyroxene crystals set in a ground mass of smaller pyroxene crystals, plagioclase, opaques and altered glass. The sherd also contains trace amounts of iron oxide and carbonate shell fragments.