Site: Aneityum

Island: Aneityum       Lithology: Volcanic high island ( Nunn et al. (2016) )

Lithology and Age: Cenozoic (mafic) volcanic rocks ( Chorlton (2007) )       Macrostrat Geological Map Link

Near/In Geonames ID: 2137559       Wikidata ID: Q528884       Getty Thesaurus of Geographic Names ID: 274549

Mindat Loc ID: None


In:

Tafea Province Wikidata ID: Q576417

Vanuatu Wikidata ID: Q686


Volcanoes:

Aneityum: Basalt / Picro-Basalt, Composite type, Stratovolcano(es).

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


Fabrics:

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
tpr268 6 0 1 0 0 1 0 0 0 0 0 1 0 0 vitric, microlitic
Aneityum hybrid type A 6 0 0 0 0 1 0 0 0 0 0 1 0 0 Vanuatu
tpr269 4 0 2 6 0 6 1 0 0 0 0 4 0 0 vitric, microlitic, lathwork
Aneityum hybrid olivine placer type B 0 0 0 3 0 1 0 0 0 0 0 2 0 0 Vanuatu
tpr280 0 1 3 1 1 2 0 0 0 0 0 5 0 0 vitric, felsitic, microlitic
Exotic Aneityum vitric quartz 0 1 3 1 1 2 0 0 0 0 0 5 0 0 Vanuatu

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_53_6 tpr268 (Aneityum hybrid type A) Aneityum 6 0 1 0 0 0 0 0 0 0 0 1 0 0 vitric
WD_53_13 tpr269 (Aneityum hybrid olivine placer type B) Aneityum 1 0 1 5 0 2 1 0 0 0 0 4 0 0 vitric, lathwork, microlitic
WD_53_4 tpr269 (Aneityum hybrid olivine placer type B) Aneityum 0 0 2 5 0 2 1 0 0 0 0 3 0 0 vitric, lathwork, microlitic
WD_53_3 tpr280 (Exotic Aneityum vitric quartz) Exotic 0 1 3 1 1 2 0 0 0 0 0 5 0 0 vitric, felsitic, microlitic

WD_53_6

Anatom12_62_2 Anatom12_62_2
Sherd 12-62-2 from Aneityum (Aneityum). Slide WD_53_6 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.

Opaque iron oxide grains, and vitric volcanic rock fragments composed of mafic sideromelane (basaltic glass). The calcareous grains are skeletal and micritic (pelletal) debris of modern reefal origin, and the calcareous aggregates are well sorted sands with textures appropriate for a beach origin.


WD_53_13

Anatom12_82 Anatom12_82
Sherd 12-82 from Aneityum (Aneityum). Slide WD_53_13 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.

Olivine placer sand. Clinopyroxene dominant, but minor orthopyroxene.


WD_53_4

AnatomA2 AnatomA2
Sherd A2 from Aneityum (Aneityum). Slide WD_53_4 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.

Olivine placer sand.


WD_53_3

AnatomA1 AnatomA1
Sherd A1 from Aneityum (Aneityum). Slide WD_53_3 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.

Quartz. Vitric.


References:

303 Aneityum, Vanuatu, 2012 (Dickinson, W.)

301 Aneityum, Vanuatu, 2012 (Dickinson, W.)