Fabric Code: tpr125

Buka calcareous hybrid

Dominantly calcareous tempers in which sparse plagioclase feldspar grains and clinopyroxene or hornblende ferromagnesian mineral grains, together with rare volcanic rock fragments, are the only terrigenous grains present.

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 6 0 2 1 1 1 0 0 0 0 0 1 0 0 vitric
Min 6 0 2 0 0 1 0 0 0 0 0 1 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_1 Buka (Buka) ? 6 0 2 1 0 1 0 0 0 0 0 1 0 0 vitric
WD_101_2 Buka (Buka) 6 0 2 0 1 1 0 0 0 0 0 1 0 0 microlitic

WD_101_1

BUK104 BUK104
Sherd 104 from Buka (Buka). Slide WD_101_1 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. Well sorted and rounded calcareous sand. Plagioclase.


WD_101_2

BUK103 BUK103
Sherd 103 from Buka (Buka). Slide WD_101_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.

Lapita. well sorted and rounded calcareous sand. Plagioclase.


References:

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