Fabric Code: tpr131

New Ireland cherty feldspathic

Well sorted, fine-grained, subrounded to subangular plagioclase (both fresh volcanic plagioclase and cloudy albite); strongly pleochroic brown hornblende, clinopyroxene, biotite, and oxyhornblende; and fine-grained rock (polycrystalline lithic) fragments including microlitic volcanic rock, metavolcanic felsite, and cherty (microcrystalline quartz) grains of metasedimentary or metavolcanic origin. Hornblende and oxyhornblende.

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 0 1 6 2 2 3 0 0 0 0 0 3 1 0 microlitic, felsitic, microphaneritic, chert
Min 0 0 4 1 1 1 0 0 0 0 0 2 0 0 Bismarck

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_32_24 Nissan (Nissan) New Ireland or Central Solomons 0 1 5 2 2 2 0 0 0 0 0 3 1 0 microlitic, felsitic, microphaneritic, chert
WD_38_3 Nissan (Nissan) New Ireland 0 0 5 1 2 2 0 0 0 0 0 3 0 0 microlitic, felsitic, microphaneritic
WD_38_1 Nissan (Nissan) New Ireland 0 0 5 1 2 2 0 0 0 0 0 3 0 0 microlitic, felsitic, microphaneritic
WD_38_2 Nissan (Nissan) New Ireland 0 0 4 1 2 3 0 0 0 0 0 3 0 0 microlitic, felsitic, microphaneritic
WD_38_7 Nissan (Nissan) New Ireland 0 0 5 2 2 3 0 0 0 0 0 2 0 0 microlitic, felsitic, microphaneritic

WD_32_24

Nissan_Kaplan_12 Nissan_Kaplan_12
Sherd 12 from Nissan (Nissan). Slide WD_32_24 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image or full slide in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Chert/metachert, quartzose/quartzite, felsite, and siltstone present. Some plagioclase altered albite.


WD_38_3

DGD169 DGD169
Sherd DGD169 from Nissan (Nissan). Slide WD_38_3 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image or full slide in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Feldspathic sand temper.


WD_38_1

DGW41 DGW41
Sherd DGW41 from Nissan (Nissan). Slide WD_38_1 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Feldspathic.


WD_38_2

DFF96A DFF96A
Sherd DFF96A from Nissan (Nissan). Slide WD_38_2 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Feldspathic sand temper.


WD_38_7

DIZ1 DIZ1
Sherd DIZ1 from Nissan (Nissan). Slide WD_38_7 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image in VIMIPO. Imaged by K. Hardy and M. Leclerc, ANU.

Feldspathic.


References:

153 Bougainville, Buka, Nissan, Ontong Java, Shortland, Solomon, 1997 (Dickinson, W.)

057 Nissan, New Ireland, PNG 1974 (Dickinson, W.)

178 Nissan, PNG, 1999 (Dickinson, W.)