Site: Malakula

Island: Malakula       Lithology: Composite high island ( Nunn et al. (2016) )

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

Near/In Geonames ID: 2136122       Wikidata ID: Q618594       Getty Thesaurus of Geographic Names ID: 1007993

Mindat Loc ID: None


In:

Malakula Island Wikidata ID: Q618594

Malampa Province Wikidata ID: Q740656

Vanuatu Wikidata ID: Q686

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
tpr250 0 0 3 1 1 2 0 0 0 0 0 6 0 0 felsitic, microlitic, vitric
Malakula pyribole-poor 0 0 2 0 0 1 0 0 0 0 0 6 0 0 Vanuatu
tpr252 0 0 3 0 3 2 0 0 0 0 0 6 0 0 felsitic, microlitic, vitric
Malakula hornblendic 0 0 3 0 2 2 0 0 0 0 0 4 0 0 Vanuatu
tpr254 0 0 3 0 1 2 0 0 0 0 0 5 0 0 microphaneritic, felsitic, microlitic, vitric
Malakula microdioritic 0 0 3 0 1 2 0 0 0 0 0 5 0 0 Vanuatu
tpr249 4 0 4 3 1 2 0 0 0 0 0 4 0 0 limeclast, microlitic, felsitic, vitric, microphaneritic
Malakula limeclast hybrid 3 0 1 1 0 1 0 0 0 0 0 3 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_49_10 tpr250 (Malakula pyribole-poor) Malakula 0 0 3 0 1 2 0 0 0 0 0 6 0 0 felsitic
WD_49_3 tpr250 (Malakula pyribole-poor) Malakula 0 0 3 0 0 1 0 0 0 0 0 6 0 0 felsitic, microlitic
WD_49_19 tpr252 (Malakula hornblendic) Malakula 0 0 3 0 3 2 0 0 0 0 0 5 0 0 felsitic
WD_49_22 tpr254 (Malakula microdioritic) Malakula 0 0 3 0 1 2 0 0 0 0 0 5 0 0 microphaneritic, felsitic
WD_58_24 tpr249 (Malakula limeclast hybrid) Malakula 3 0 3 3 0 2 0 0 0 0 0 4 0 0 limeclast, microlitic, felsitic, vitric, microphaneritic

WD_49_10

Tuato12_6 Tuato12_6
Sherd 12-6 from Malakula (Malakula). Slide WD_49_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.

Lithic, primarily felsitic.


WD_49_3

Bethel12_5 Bethel12_5
Sherd 12-5 from Malakula (Malakula). Slide WD_49_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.

Felsitic, microlitic lithic.


WD_49_19

Litzlitz Litzlitz
Sherd litz from Malakula (Malakula). Slide WD_49_19 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.

Hornblendic, has mainly felsite.


WD_49_22

PortStanley12_4 PortStanley12_4
Sherd 12-4 from Malakula (Malakula). Slide WD_49_22 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.

With microdiorite.


WD_58_24

MalakulaNHM47 MalakulaNHM47
Sherd NHM47 from Malakula (Malakula). Slide WD_58_24 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.

Hybrid with limeclast calcareous and feldspar, microlitic and felsitic rock volcanic sands. Older sherd.


References:

117 Vanuatu Report (Dickinson, W.)

180 Malakula, Vanuatu, 1999 (Dickinson, W.)

228 Vao Tempers, 2003 (Dickinson, W.)

155 Malakula, Vanuatu, 1997 (Dickinson, W.)