Site: Aiwa

Island: Aiwa


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
tpr369 4 0 1 3 0 4 0 0 0 0 0 5 0 0 vitric, microlitic, limeclast
Nayau hybrid andesitic 3 0 1 1 0 2 0 0 0 0 0 3 0 0 Fiji
tpr373 6 0 1 0 0 2 0 0 0 0 0 1 0 0 limeclast, vitric
Nayau calcareous 6 0 0 0 0 1 0 0 0 0 0 0 0 0 Fiji
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
tpr372 0 0 2 6 0 1 0 0 0 0 0 3 0 0 vitric, microlitic
Exotic Nayau pyroxenic 0 0 1 6 0 1 0 0 0 0 0 2 0 0 Fiji
tpr410 2 0 2 1 0 2 0 0 0 0 0 6 0 0 microlitic, vitric
Lakeba lithic 0 0 0 0 0 1 0 0 0 0 0 6 0 0 Fiji

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_70_2 tpr410 (Lakeba lithic) Lau 0 0 2 0 0 2 0 0 0 0 0 6 0 0 microlitic, vitric
WD_70_3 tpr410 (Lakeba lithic) Lau 0 0 0 0 0 1 0 0 0 0 0 6 0 0 vitric, microlitic
WD_70_5 tpr410 (Lakeba lithic) Lau 1 0 0 0 0 2 0 0 0 0 0 6 0 0 vitric, microlitic
WD_70_6 tpr410 (Lakeba lithic) Lau 0 0 1 0 0 1 0 0 0 0 0 6 0 0 microlitic, vitric
WD_70_25 tpr373 (Nayau calcareous) Lau 6 0 0 0 0 1 0 0 0 0 0 1 0 0 vitric
WD_70_10 tpr371 (Nayau-Lakeba feldspathic) Lau 0 0 4 1 0 1 0 0 0 0 0 5 0 0 microlitic, vitric
WD_70_11 tpr371 (Nayau-Lakeba feldspathic) Lau 0 0 6 1 0 2 0 0 0 0 0 3 0 0 microlitic, vitric
WD_70_12 tpr371 (Nayau-Lakeba feldspathic) Lau 0 0 4 3 0 1 0 0 0 0 0 4 0 0 vitric, microlitic
WD_70_14 tpr372 (Exotic Nayau pyroxenic) Lakeba 0 0 2 6 0 1 0 0 0 0 0 3 0 0 microlitic, vitric
WD_70_19 tpr369 (Nayau hybrid andesitic) Lau 3 0 1 1 0 3 0 0 0 0 0 5 0 0 vitric, microlitic, limeclast

WD_70_2

Aiwa_FS_120_5_a Aiwa_FS_120_5_a
Sherd FS-120-5 from Aiwa (Aiwa). Slide WD_70_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.

Dominantly microporphyritic-pilotaxitic, also tan to red vitric.


WD_70_3

Aiwa_FS_131_90 Aiwa_FS_131_90
Sherd FS-131-90 from Aiwa (Aiwa). Slide WD_70_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.

Dominantly tan to red vitric, also dark brown tachylitic.


WD_70_5

Aiwa_FS_48_10 Aiwa_FS_48_10
Sherd FS-48-10 from Aiwa (Aiwa). Slide WD_70_5 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.

Dominantly greenish brown vitric to hyalopilitic.


WD_70_6

Aiwa_FS_78_1 Aiwa_FS_78_1
Sherd FS-48-1 from Aiwa (Aiwa). Slide WD_70_6 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.

Dominantly microporphyritic-hyalopilitic, also tan to red vitric.


WD_70_25

Aiwa_FS_129_253 Aiwa_FS_129_253
Sherd FS-129-25 from Aiwa (Aiwa). Slide WD_70_25 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.

Calcareous.


WD_70_10

Aiwa_FS_131_94 Aiwa_FS_131_94
Sherd FS-131-94 from Aiwa (Aiwa). Slide WD_70_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.

Volcanic rock (lithic) fragments, where vitric are tan to red glassy grains, and microlitic grains include both hyalopilitic (plagioclase microlites set in clear brown volcanic glass) and tachylitic (plagioclase microlites set in opaque volcanic glass) grains .


WD_70_11

Aiwa_FS_149_1 Aiwa_FS_149_1
Sherd FS-149-1 from Aiwa (Aiwa). Slide WD_70_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.

Volcanic rock (lithic) fragments, where vitric are tan to red glassy grains, and microlitic grains include both hyalopilitic (plagioclase microlites set in clear brown volcanic glass) and tachylitic (plagioclase microlites set in opaque volcanic glass) grains.


WD_70_12

Aiwa_FS_120_3 Aiwa_FS_120_3
Sherd FS-120-3 from Aiwa (Aiwa). Slide WD_70_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.

Volcanic rock (lithic) fragments, where vitric are tan to red glassy grains, and microlitic grains include both hyalopilitic (plagioclase microlites set in clear brown volcanic glass) and tachylitic (plagioclase microlites set in opaque volcanic glass) grains.


WD_70_14

Aiwa_FS_20_79 Aiwa_FS_20_79
Sherd FS-20-79 from Aiwa (Aiwa). Slide WD_70_14 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.

Hyalopilitic. Texture is distinct from Kedekeke temper.


WD_70_19

Aiwa_FS_139_1 Aiwa_FS_139_1
Sherd FS-139-1 from Aiwa (Aiwa). Slide WD_70_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.

Hybrid andesitic beach sand.


References:

230 Nayau, Aiwa, Lau Group, Fiji, 2003 (Dickinson, W.)