Site: Garua

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

Lithology: Andesite, basalt and rhyodacite volcanics ( Dickinson (2006) )

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

Near/In Geonames ID: 2097142       Wikidata ID: Q49638834       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: None


In:

West New Britain Province Wikidata ID: Q667468


Volcanoes:

Garua Harbour: Rhyolite, Cluster type, Volcanic field.

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
tpr192 0 1 5 2 1 1 1 0 0 0 0 3 0 0 microlitic, lathwork, vitric
Garua feldspathic 0 1 5 2 1 1 1 0 0 0 0 3 0 0 Bismarck

Slides:

Slide Fabric Possible OriginWareCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_41_9 tpr192 (Garua feldspathic) New Britain Late Far Western Lapita (2980 - 1800 BP) 0 1 5 2 1 1 1 0 0 0 0 3 0 0 microlitic, lathwork, vitric
WD_41_10 tpr192 (Garua feldspathic) New Britain Late Far Western Lapita (2980 - 1800 BP) 0 1 5 2 1 1 1 0 0 0 0 3 0 0 microlitic, lathwork, vitric

WD_41_9

GaruaFS2_14_94 GaruaFS2_14_94
Sherd FS2-14-94 from Garua (Garua). Slide WD_41_9 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.

Generally andesitic, fine- to medium-grained, subangular to subrounded temper sand of probable beach origin. Clinopyroxene dominant, but minor orthopyroxene.


WD_41_10

GaruaFS2_15_93 GaruaFS2_15_93
Sherd FS2-15-93 from Garua (Garua). Slide WD_41_10 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.

Generally andesitic, fine- to medium-grained, subangular to subrounded temper sand of probable beach origin. Has orthopyroxene in addition to clinopyroxene.


References:

149 New Britain, PNG, 1997 (Dickinson, W.)

174 Adwe, Arawe, New Britain, PNG, 1998 (Dickinson, W.)