Rotuma Group

Wikidata ID: Q934813

Lithology and Age: None ( Chorlton (2007) )       Macrostrat Geological Map Link

Geonames ID: None       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: None

brown pot Site has a full slide image.

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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
tpr387 1 0 0 6 1 1 1 0 0 0 0 1 0 0 microlitic, lathwork
Exotic Rotuma pyroxenic 1 0 0 6 0 1 1 0 0 0 0 1 0 0 Fiji
tpr392 ** 0 0 2 2 0 1 3 0 0 0 0 6 0 0 vitric, lathwork
Rotuma olivine lithic 0 0 2 0 0 0 2 0 0 0 0 5 0 0 Fiji

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_111_1 tpr392 (Rotuma olivine lithic) Rotuma 0 0 2 2 0 1 2 0 0 0 0 6 0 0 lathwork

WD_111_1

Rotuma_57_10 Rotuma_57_10
Sherd 57-10 from Rotuma (Rotuma). Slide WD_111_1 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.

High ratio olivine to pyroxene. Indigenous temper. Intergranular textured lithics typical of alkalic basalt lava. Only clinopyroxene, no orthopyroxene.


References:

135 Rotuma 1997 (Dickinson, W.)