Site: Kolombangara

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

Lithology: Olivine basalt volcanics ( Dickinson (2006) )

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

Near/In Geonames ID: 2107553       Wikidata ID: Q542053       Getty Thesaurus of Geographic Names ID: 7002061

Mindat Loc ID: 420479


In:

New Georgia Group Wikidata ID: Q383986

Western Province Wikidata ID: Q150325

Solomon Islands Wikidata ID: Q685


Volcanoes:

Kolombangara: , Composite type, Stratovolcano.

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
tpr135 0 0 4 4 1 4 0 0 0 0 0 2 0 0 microlitic, vitric
Kolombangara pyroxenic 0 0 3 4 0 3 0 0 0 0 0 1 0 0 Solomons
tpr136 0 0 2 2 5 3 0 0 0 0 0 1 0 0 felsitic
Exotic Kolombangara hornblendic 0 0 2 2 5 3 0 0 0 0 0 1 0 0 Solomons
tpr137 5 0 4 1 1 1 0 0 0 0 0 2 0 0 microlitic, vitric
Kolombangara feldspathic hybrid 5 0 4 1 1 1 0 0 0 0 0 2 0 0 Solomons
tpr138 0 2 3 2 5 2 0 0 0 1 0 3 0 0 microphaneritic
Exotic Kolombangara hornblendic-hypabassal 0 1 2 1 4 1 0 0 0 1 0 3 0 0 Solomons

Slides:

Slide Fabric Possible OriginWareCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_35_25 tpr135 (Kolombangara pyroxenic) Kolombangara Early Post-Lapita Solomons (2700 - 2000 BP) 0 0 4 4 0 3 0 0 0 0 0 2 0 0 microlitic, vitric
WD_35_23 tpr135 (Kolombangara pyroxenic) Kolombangara Early Post-Lapita Solomons (2700 - 2000 BP) 0 0 4 4 0 3 0 0 0 0 0 1 0 0 microlitic, vitric
WD_35_21 tpr136 (Exotic Kolombangara hornblendic) Vella Lavella Early Post-Lapita Solomons (2700 - 2000 BP) 0 0 2 2 5 3 0 0 0 0 0 1 0 0 felsitic
WD_35_22 tpr137 (Kolombangara feldspathic hybrid) Solomons Late Lapita Solomons (2700 - 1800 BP) 5 0 4 1 1 1 0 0 0 0 0 2 0 0 microlitic, vitric
WD_34_22 tpr138 (Exotic Kolombangara hornblendic-hypabassal) Choiseul? Northwest Choiseul Plainware (300 - 0 BP) 0 2 3 2 4 1 0 0 0 1 0 3 0 0 microphaneritic
WD_34_23 tpr138 (Exotic Kolombangara hornblendic-hypabassal) Choiseul? Northwest Choiseul Plainware (300 - 0 BP) 0 2 3 2 4 1 0 0 0 1 0 3 0 0 microphaneritic
WD_34_24 tpr138 (Exotic Kolombangara hornblendic-hypabassal) Choiseul? Northwest Choiseul Plainware (300 - 0 BP) 0 1 2 1 5 2 0 0 0 1 0 3 0 0 microphaneritic

WD_35_25

TanahukaNR004 TanahukaNR004
Sherd NR004 from Kolombangara (Kolombangara). Slide WD_35_25 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.

Well sorted and subrounded to subangular aggregates of pyroxenic placer sand. Likely indigenous to Kolombangara.


WD_35_23

TanahukaNR009 TanahukaNR009
Sherd NR009 from Kolombangara (Kolombangara). Slide WD_35_23 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.

Well sorted and subrounded to subangular aggregates of pyroxenic placer sand. Likely indigenous to Kolombangara.


WD_35_21

TanahukaNR016 TanahukaNR016
Sherd NR016 from Kolombangara (Kolombangara). Slide WD_35_21 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.

Well sorted and subrounded to subangular aggregate of hornblendic placer sand. Likely exotic to Kolombangara.


WD_35_22

Poi7 Poi7
Sherd Poi7 from Kolombangara (Kolombangara). Slide WD_35_22 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.

Well sorted and subrounded feldspathic hybrid sand composed of unplacered volcanic sand admixed with more abundant calcareous reef grains.


WD_34_22

Kolombangara_BN_5_A_12 Kolombangara_BN_5_A_12
Sherd BN-5-A-12 from Kolombangara (Kolombangara). Slide WD_34_22 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.

Green hornblende.


WD_34_23

Kolombangara_BN_9_A_72 Kolombangara_BN_9_A_72
Sherd BN-9-A-72 from Kolombangara (Kolombangara). Slide WD_34_23 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.

Green hornblende.


WD_34_24

Kolombangara_BN_9_A_73 Kolombangara_BN_9_A_73
Sherd BN-9-A-73 from Kolombangara (Kolombangara). Slide WD_34_24 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.

Green hornblende.


References:

258 Kolombangara, New Georgia, Solomon, 2007 (Dickinson, W.)

276 Roviana, New Georgia, Solomon, 2009 (Dickinson, W.)

042 Kolombongara, Solomon 1972 (Dickinson, W.)