Site: Lapaha

Island: Tongatapu       Lithology: Limestone high island ( Nunn et al. (2016) )

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

Near/In Geonames ID: 4032543       Wikidata ID: None       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: None


In:

Tongatapu Island Wikidata ID: Q620452

Tongatapu Group Wikidata ID: Q49296865

Tonga Wikidata ID: Q678

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
tpr207 2 3 3 6 1 3 0 0 0 0 0 2 0 0 microlitic, felsitic, vitric
Exotic Tonga pyroxenic placer 0 1 1 4 0 1 0 0 0 0 0 1 0 0 Tonga
tpr371 2 0 6 3 0 2 0 0 0 0 0 4 0 0 vitric, microlitic
Nayau-Lakeba feldspathic 0 0 4 1 0 1 0 0 0 0 0 2 0 0 Fiji
tpr439 3 1 3 5 0 2 1 0 0 0 0 3 0 0 na
Tongatapu hybrid 3 0 2 4 0 1 0 0 0 0 0 2 0 0 Tonga
tpr440 0 1 3 5 0 3 1 0 0 0 0 3 0 0 na
Tongatapu partial placer 0 0 2 3 0 1 0 0 0 0 0 2 0 0 Tonga

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_71_1 tpr439 (Tongatapu hybrid) Tongatapu 3 1 2 5 0 2 1 0 0 0 0 2 0 0 microlitic, felsitic, vitric
WD_71_2 tpr439 (Tongatapu hybrid) Tongatapu 1 0 4 4 0 1 0 0 0 0 0 3 0 0 microlitic, vitric, felsitic
WD_71_26 tpr440 (Tongatapu partial placer) Tongatapu 0 1 4 5 0 1 0 0 0 0 0 2 0 0 microlitic, vitric

WD_71_1

Tongatapu_2_2 Tongatapu_2_2
Sherd 2-2 from Lapaha (Tongatapu). Slide WD_71_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.

Hybrid partial placer.


WD_71_2

Tongatapu_3_1 Tongatapu_3_1
Sherd To8-3-1 from Lapaha (Tongatapu). Slide WD_71_2 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.

Hybrid placer.


WD_71_26

Tongatapu_2_1 Tongatapu_2_1
Sherd To7_2-1 from Lapaha (Tongatapu). Slide WD_71_26 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.

Partial placer.


References:

183 Tongatapu, Tonga 1999 (Dickinson, W.)