Fabric Code: tpr127

Buka microgranular

Moderately sorted microgranular sand temper, with plagioclase and microgranular hypabyssal microphanerite. Some non-pleochroic pale clinopyroxene mineral grains. Probable fluvial origin. Probably manually added. Some biotite.

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 4 2 2 2 0 2 0 0 0 5 0 0 microphaneritic, microlitic
Min 0 0 3 1 1 1 0 0 0 0 0 4 0 0 Solomons

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_101_3 Buka (Buka) Buka 0 0 4 2 1 2 0 0 0 0 0 4 0 0 microphaneritic, microlitic
WD_101_6 Ontong Java Atoll (Ontong Java Atoll) Buka 0 0 4 2 1 2 0 0 0 0 0 4 0 0 microphaneritic, microlitic
WD_101_7 Ontong Java Atoll (Ontong Java Atoll) Buka 0 0 3 2 1 2 0 0 0 0 0 5 0 0 microphaneritic
WD_32_13 Nissan (Nissan) Buka 0 0 3 2 2 2 0 1 0 0 0 5 0 0 microphaneritic, microlitic
WD_32_20 Nissan (Nissan) Buka 0 0 4 2 1 2 0 1 0 0 0 5 0 0 microphaneritic, microlitic
WD_32_25 Nissan (Nissan) Buka 0 0 5 2 1 2 0 2 0 0 0 4 0 0 microphaneritic, microlitic
WD_35_19 Ontong Java Atoll (Ontong Java Atoll) Buka 0 0 4 2 1 2 0 0 0 0 0 4 0 0 microphaneritic
WD_35_20 Ontong Java Atoll (Ontong Java Atoll) Buka 0 0 3 2 1 2 0 0 0 0 0 5 0 0 microphaneritic

WD_101_3

BUK102 BUK102
Sherd 102 from Buka (Buka). Slide WD_101_3 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.

Non-Lapita. Poorly sorted and weathered volcanic sand. Plagioclase and microphaneritic igneous rock fragments (microgranular grains composed dominantly of plagioclase-clinopyroxene with subophitic internal texture of clinopyroxene crystals partly enclosing plagioclase laths), microlitic volcanic rock fragments, opaque iron oxides, clinopyroxene, green hornblende, and deeply weathered brown biotite


WD_101_6

ontong4 ontong4
Sherd 4 from Ontong Java atoll (Ontong Java atoll). Slide WD_101_6 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.

Microgranular temper. May not be from Buka- has different hornblende:pyroxene ratio.


WD_101_7

ontong6 ontong6
Sherd 6 from Ontong Java atoll (Ontong Java atoll). Slide WD_101_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.

Microgranular temper. May not be from Buka- has different hornblende:pyroxene ratio.


WD_32_13

Nissan_Kaplan_1 Nissan_Kaplan_1
Sherd 1 from Nissan (Nissan). Slide WD_32_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.

Buka wares Fine-grained microgranular rock fragments dominant.


WD_32_20

Nissan_Kaplan_8 Nissan_Kaplan_8
Sherd 8 from Nissan (Nissan). Slide WD_32_20 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.

Buka wares Fine-grained microgranular rock fragments dominant.


WD_32_25

DFF97_bukawares DFF97_bukawares
Sherd DFF97 from Nissan (Nissan). Slide WD_32_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.

Poorly sorted temper sand characteristic of Buka temper types.


WD_35_19

Bukaware_Pelau55_7 Bukaware_Pelau55_7
Sherd 55-7 from Ontong Java atoll (Ontong Java atoll). Slide WD_35_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.

Microgranular temper. May not be from Buka- has different hornblende:pyroxene ratio.


WD_35_20

Bukaware_Pelau55_8 Bukaware_Pelau55_8
Sherd 55-8 from Ontong Java atoll (Ontong Java atoll). Slide WD_35_20 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.

Microgranular temper. May not be from Buka- has different hornblende:pyroxene ratio.


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.)