Fabric Code: tpr348c

Kadavu pyroxenic

Pyroxenic andesites.

Fabric Class:

Pyroxenic-Igneous: Dominated by pyroxenic and igneous lithic inclusions.

Andesitic Arc: Dominated by andesite and basalt lithic fragments, with microlitic, felsitic and vitric textures, and the andesite minerals (plagioclase, clinopyroxene and sometimes hornblende).

Sites:

Mineral and Rock Abundances

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
Max 4 0 3 3 2 4 0 1 0 0 0 5 0 0 felsiitc, microlitic, vitric
Min 0 0 2 2 0 2 0 0 0 0 0 4 0 0 Fiji

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_64_9 Tiliva (Kadavu) Tiliva 0 0 3 3 1 2 0 0 0 0 0 5 0 0 felsitic, microlitic, vitric
WD_64_11 Tiliva (Kadavu) Tiliva 0 0 2 2 0 4 0 0 0 0 0 4 0 0 felsitic, vitric, microlitic
WD_64_12 Tiliva (Kadavu) Tiliva 4 0 2 2 1 2 0 0 0 0 0 4 0 0 felsitic, vitric, micolitic
WD_64_13 Tiliva (Kadavu) Tiliva 0 0 3 3 2 3 0 1 0 0 0 4 0 0 felsitic, vitric, microlitic
WD_64_23 Galoa Island (Galoa) Galoa Island 0 0 3 2 0 3 0 1 0 0 0 5 0 0 felsitic, vitric, microlitic

WD_64_9

Kadavu_TR1 Kadavu_TR1
Sherd TR1 from Tiliva (Kadavu). Slide WD_64_9 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image (user: Guest pwd: Guest) or full slide in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Contains only clinopyroxene no orthopyroxene.


WD_64_11

Kadavu_TR3 Kadavu_TR3
Sherd TR3 from Tiliva (Kadavu). Slide WD_64_11 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.

Pyroxene andesite. Only clinopyroxene not orthopyroxenes.


WD_64_12

Kadavu_TV1 Kadavu_TV1
Sherd TV1 from Tiliva (Kadavu). Slide WD_64_12 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.

Pyroxene andesite with some orthopyroxene as well as clinopyroxene.


WD_64_13

Kadavu_TV2 Kadavu_TV2
Sherd TV2 from Tiliva (Kadavu). Slide WD_64_13 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.

Pyroxene andesite, some orthopyroxene with the clinopyroxene.


WD_64_23

Kadavu_GA1 Kadavu_GA1
Sherd GA1 from Galoa Island (Galoa). Slide WD_64_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.

Augite andesite. No hornblende or orthopyroxene.


References:

284 Kadavu, Fiji, 2010 (Dickinson, W.)