Fabric Code: tpr343a

Yanuca felsitic

Probably derive from small local streams of southwestern Viti Levu. The volcanic rock fragments in Yanuca felsitic tempers are dominantly grains with a felsitic mosaic groundmass of intergrown microcrystalline quartz and feldspar.

Fabric Class:

Quartzose-Feldspathic Lithic: Dominated by quartz and feldspar inclusions, with igneous and/or sedimentary lithics.

Dissected Orogen: Dominated by plutonic lithics such as microgranite, and those with microphaneritic textures, as well as metavolcanics. They have K-feldspars dominate, in addition to plagioclase.

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 1 4 3 1 1 2 0 0 0 1 0 4 3 0 felsitic, microphaneritic, chert, argillitic
Min 0 3 3 1 1 1 0 0 0 1 0 3 2 0 Fiji

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
FL_1_2 Yanuca (Viti Levu) Yanuca 1 3 3 1 1 1 0 0 0 1 0 3 2 0 felsitic, microphaneritic, chert, argillitic
FL_1_11 Yanuca (Viti Levu) Yanuca 1 3 3 1 1 1 0 0 0 1 0 3 3 0 felsitic, microphaneritic, chert, argillitic
FL_1_12 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 2 0 0 0 1 0 4 3 0 felsitic, microphaneritic, chert, argillitic
FL_1_14 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 3 0 1 0 1 0 4 2 0 felsitic, microphaneritic, chert, argillitic
FL_1_15 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 2 0 0 0 1 0 3 3 0 felsitic, microphaneritic, chert, argillitic
FL_1_16 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 2 0 0 0 1 0 3 3 0 microphaneritic, felsitic, argillitic, chert
FL_1_18 Yanuca (Viti Levu) Yanuca 1 3 3 1 1 2 0 0 0 0 0 4 3 0 Microphaneritic, felsitic, chert
FL_1_19 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 2 0 0 0 1 0 4 3 0 microphaneritic, felsitic, chert
WD_63_21 Yadua (Viti Levu) Yanuca 0 4 3 1 1 2 0 1 0 1 0 3 2 0 microphaneritic, felsitic, microlitic, siltstone, argillitic, chert
WD_61_7 Yanuca (Viti Levu) Yanuca 0 3 3 1 0 1 0 0 0 0 0 4 3 0 microphaneritic, felsitic
WD_61_8 Yanuca (Viti Levu) Yanuca 0 3 3 1 1 1 0 0 0 1 0 4 3 0 felsitic, microphaneritic
WD_61_11 Yanuca (Viti Levu) Yanuca 0 3 3 1 0 2 0 0 0 1 0 3 2 0 felsitic, microphaneritic
WD_61_13 Yanuca (Viti Levu) Yanuca 0 3 3 0 0 2 0 0 0 0 0 4 2 0 felsitic, microphaneritic

FL_1_2

Yanuca_AH16 Yanuca_AH16
Sherd AH-16 from Yanuca (Viti Levu). Slide FL_1_2 from Leach Collection, Auckland University. 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.

Early dentate. Local felsitic with sedimentary.


FL_1_11

Yanuca_AH50 Yanuca_AH50
Sherd AH-50 from Yanuca (Viti Levu). Slide FL_1_11 from Leach Collection, Auckland University. 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.

Middle plain sherd.


FL_1_12

Yanuca_AH75 Yanuca_AH75
Sherd AH-75 from Yanuca (Viti Levu). Slide FL_1_12 from Leach Collection, Auckland University. 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.

Early plain sherd.


FL_1_14

Yanuca_AH41 Yanuca_AH41
Sherd AH-41 from Yanuca (Viti Levu). Slide FL_1_14 from Leach Collection, Auckland University. 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.

Middle plain sherd.


FL_1_15

Yanuca_AH92 Yanuca_AH92
Sherd AH-92 from Yanuca (Viti Levu). Slide FL_1_15 from Leach Collection, Auckland University. 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.

Middle, cross-hatched sherd.


FL_1_16

Yanuca_AH100 Yanuca_AH100
Sherd AH-100 from Yanuca (Viti Levu). Slide FL_1_16 from Leach Collection, Auckland University. 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.

Middle cross-hatched sherd.


FL_1_18

Yanuca_AH103 Yanuca_AH103
Sherd AH-103 from Yanuca (Viti Levu). Slide FL_1_18 from Leach Collection, Auckland University. 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.

Middle paddle-rib sherd.


FL_1_19

Yanuca_AH105 Yanuca_AH105
Sherd AH-105 from Yanuca (Viti Levu). Slide FL_1_19 from Leach Collection, Auckland University. 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.

Middle paddle-rib


WD_63_21

Yadua_73_4_4 Yadua_73_4_4
Sherd 73 4-1 from Yadua (Viti Levu). Slide WD_63_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.

Lapita sherd. Orogen temper.


WD_61_7

Yanuca_21_10 Yanuca_21_10
Sherd 21-10 from Yanuca (Viti Levu). Slide WD_61_7 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 feldspathic.


WD_61_8

Yanuca_21_15 Yanuca_21_15
Sherd 21-15 from Yanuca (Viti Levu). Slide WD_61_8 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.

Lithic feldspathic.


WD_61_11

Yanuca_21_32 Yanuca_21_32
Sherd 21-32 from Yanuca (Viti Levu). Slide WD_61_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.

Felsitic lithic.


WD_61_13

Yanuca_21_40 Yanuca_21_40
Sherd 21-40 from Yanuca (Viti Levu). Slide WD_61_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.

Felsitic lithic.


References:

190 Dissected orogen tempers, Viti Levu, Fiji 1999 (Dickinson, W.)