Penama Province

Wikidata ID: Q836649

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

Geonames ID: 2208266       Getty Thesaurus of Geographic Names ID: 7024014

Mindat Loc ID: None


Volcanoes:

Ambae: Basalt / Picro-Basalt, Shield type, Shield.

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
tpr246 ** 0 2 4 3 0 2 0 0 0 0 0 5 0 0 microlitic, vitric, chert, felsitic
Ambae basaltic 0 0 3 1 0 1 0 0 0 0 0 4 0 0 Vanuatu
tpr247 0 0 4 1 2 2 0 0 0 2 0 5 0 0 felsitic, microlitic, vitric
Exotic Ambae andesitic 0 0 2 0 1 1 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_48_3 tpr246 (Ambae basaltic) Ambae 0 2 3 2 0 1 0 0 0 0 0 5 0 0 microlitic, vitric, chert, felsitic
WD_48_1 tpr246 (Ambae basaltic) Ambae 0 1 4 1 0 1 0 0 0 0 0 4 0 0 microlitic, vitric, chert, felsitic
WD_48_4 tpr246 (Ambae basaltic) Ambae 0 0 3 2 0 2 0 0 0 0 0 5 0 0 microlitic, vitric, felsitic
WD_48_7 tpr247 (Exotic Ambae andesitic) Malakula 0 0 2 1 1 2 0 0 0 2 0 5 0 0 felsitic, microlitic, vitric
WD_48_9 tpr247 (Exotic Ambae andesitic) Malakula 0 0 3 1 2 2 0 0 0 1 0 5 0 0 felsitic, microlitic, vitric

WD_48_3

AmbaeAM8 AmbaeAM8
Sherd AM8 from Ambae (Ambae). Slide WD_48_3 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.

Basaltic sand, with chalcedony quartz lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.


WD_48_1

AmbaeAM1 AmbaeAM1
Sherd AM1 from Ambae (Ambae). Slide WD_48_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.

Basaltic sand, with chalcedony quartz lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.


WD_48_4

AmbaeAM4 AmbaeAM4
Sherd AM4 from Ambae (Ambae). Slide WD_48_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.

Basaltic sand lacking hornblende and containing volcanic lithic fragments that are dominantly microlitic, contanis plagioclase feldspar grains, and clinopyroxene.


WD_48_7

AmbaeAM5 AmbaeAM5
Sherd AM5 from Ambae (Ambae). Slide WD_48_7 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.

Andesitic.


WD_48_9

AmbaeAM7 AmbaeAM7
Sherd AM7 from Ambae (Ambae). Slide WD_48_9 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.

Andesitic.


References:

255 Vanuatu, 2006 (Dickinson, W.)

311 Ambae, Erromango, Vanuatu, 2014 (Dickinson, W.)