Fabric Code: tpr214

Santo stream

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. Moderately to poorly sorted and subangular. Clinopyroxene dominant, but minor orthopyroxene.

Fabric Class:

Pyroxenic-Igneous: Dominated by pyroxenic and igneous 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 1 0 5 4 1 3 0 0 0 0 0 5 0 0 microlitic, vitric, felsitic
Min 0 0 2 1 1 1 0 0 0 0 0 3 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_57_13 Santo (Santo) Santo 1 0 3 4 1 3 0 0 0 0 0 3 0 0 microlitic, vitric
WD_57_23 Santo (Santo) Santo 0 0 3 4 1 2 0 0 0 0 0 4 0 0 microlitic, vitric
WD_57_24 Santo (Santo) Santo 0 0 5 1 1 2 0 0 0 0 0 4 0 0 microlitic, vitric
ML_1_11 Wusi (Santo) Santo 0 0 5 2 0 3 0 0 0 0 0 3 0 0 felsitic, microlitic, vitric
ML_1_12 Wusi (Santo) Santo 0 0 4 4 0 2 0 0 0 0 0 3 0 0 microlitic, felsitic, vitric
ML_1_13 Wusi (Santo) Santo 0 0 3 4 0 2 0 0 0 0 0 3 0 0 felsitic, microlitic

WD_57_13

SantoSAN4 SantoSAN4
Sherd SAN4 from Santo (Santo). Slide WD_57_13 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image (user: Guest pwd: Guest) or full slide in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. Moderately to poorly sorted and subangular.


WD_57_23

SantoSAN6 SantoSAN6
Sherd SAN6 from Santo (Santo). Slide WD_57_23 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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. (moderately to poorly sorted and subangular).


WD_57_24

SantoSAN5 SantoSAN5
Sherd SAN5 from Santo (Santo). Slide WD_57_24 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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. (moderately to poorly sorted and subangular).


ML_1_11

WU1 WU1
Sherd WU1 from Wusi (Santo). Slide ML_1_11 from Leclerc, ANU. 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.

Plagioclase-rich, felsitic.


ML_1_12

WU2 WU2
Sherd WU2 from Wusi (Santo). Slide ML_1_12 from Leclerc, ANU. 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.

Clinopyroxene-rich.


ML_1_13

WU3 WU3
Sherd WU3 from Wusi (Santo). Slide ML_1_13 from Leclerc, ANU. 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.

Clinopyroxene-rich. Modern sherd.


References:

259 Santo, Vanuatu, 2007 (Dickinson, W.)