Fabric Code: tpr258

Banks vitric

Colorless and isotropic grains of felsic volcanic glass.

Fabric Class:

Vitric: Dominated by vitric lithic inclusions.

Andesitic Arc: Dominated by andesite and basalt lithic fragments, with microlitic, felsitic and vitric textures, and the andesite minerals (plagioclase, clinopyroxene and sometimes hornblende).

Sites:

Mineral and Rock Abundances

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
Max 0 0 1 3 0 1 0 0 0 0 0 6 0 0 vitric, microlitic
Min 0 0 1 2 0 1 0 0 0 0 0 6 0 0 Vanuatu

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_52_1 Pakea Islet (Kwakea) Banks 0 0 1 2 0 1 0 0 0 0 0 6 0 0 vitric

WD_52_1

Pakea58_1 Pakea58_1
Sherd 58-1 from Pakea Islet (Kwakea). Slide WD_52_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.

Colourless felsic glass.


References:

261 Banks, Vanuatu, 2007 (Dickinson, W.)