Oceanic Basalt Trachytic Variant (Q137388081)

Mainly contain olivines, clinopyroxenes and plagioclase, and have lathwork and mafic vitric lithic fragments.

Note that to see the 'Geology' layer (layer options in top right corner) you may have to zoom out.

Many fabrics have a range of abundances. The range maximum (top) and minimum (bottom) are shown.

** Has full slide image available.

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. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ SpinelIg./Met. Rocks Sed. Rocks Grog Lithics/ Region
tpr293a ** 0 0 1 0 0 0 0 0 0 0 0 6 0 0 felsitic
Samoan felsitic trachytic 0 0 0 0 0 0 0 0 0 0 0 6 0 0 Samoa
tpr293b ** 1 0 2 1 2 0 1 0 0 0 0 6 0 0 microlitic, lathwork, vitric
Samoan microlitic trachytic 0 0 0 0 0 0 0 0 0 0 0 5 0 0 Samoa

All slides available for those fabrics:

Slide Fabric Possible OriginWareCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_25_11 tpr293a (Samoan felsitic trachytic) Samoa Samoa Polynesian Plainware (2500 - 1700 BP) 0 0 1 0 0 0 0 0 0 0 0 6 0 0 felsitic
WD_25_1 tpr293b (Samoan microlitic trachytic) Samoa Samoa Polynesian Plainware (2500 - 1700 BP) 0 0 2 1 1 0 0 0 0 0 0 6 0 0 microlitic, lathwork
WD_25_8 tpr293b (Samoan microlitic trachytic) Samoa Samoa Polynesian Plainware (2500 - 1700 BP) 0 0 1 0 0 0 0 0 0 0 0 6 0 0 microlitic, lathwork
WD_25_5 tpr293b (Samoan microlitic trachytic) Samoa Samoa Polynesian Plainware (2500 - 1700 BP) 0 0 2 0 0 0 1 0 0 0 0 6 0 0 microlitic, lathwork

WD_25_11

Aoa_AS_15 Aoa_AS_15
Sherd AS15 from ‘Aoa Valley (Tutuila). Slide WD_25_11 from Dickinson Collection, Bishop Museum. 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.

Trachytic.


WD_25_1

Vailele_16_2 Vailele_16_2
Sherd 16-2 from Vailele (Upolu). Slide WD_25_1 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Trachytic microlitic.


WD_25_8

Sasoaa_25_4 Sasoaa_25_4
Sherd 25-4 from Sasoa’a (Upolu). Slide WD_25_8 from Dickinson Collection, Bishop Museum. 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.

Trachytic.


WD_25_5

JanesCamp_FS84 JanesCamp_FS84
Sherd SuFL-1 FS-84 from Jane's Camp (Upolu). Slide WD_25_5 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Trachytic microlitic.


Ceramic Wares

Samoa Polynesian Plainware (2500 - 1700 BP)