Fabric Code: tpr397

Yasawa hybrid felsic

Type B2.

Fabric Class:

Calcareous-Feldspathic: Dominated by calcareous and feldspar inclusions.

Andesitic Arc: Dominated by andesite and basalt lithic fragments, with microlitic, felsitic and vitric textures, and the andesite minerals (plagioclase, clinopyroxene and sometimes hornblende).

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 4 1 3 1 0 1 0 0 0 0 0 5 0 0 vitric, felsitic, microlitic
Min 2 0 3 0 0 0 0 0 0 0 0 3 0 0 Fiji

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_97_21 Nanuya Lailai (Nanuya Lailai) Yasawa 4 0 3 1 0 1 0 0 0 0 0 3 0 0 felsitic, microlitic, vitric

WD_97_21

Yasawa_NL_4 Yasawa_NL_4
Sherd NL4 from Nanuya Lailai (Nanuya Lailai). Slide WD_97_21 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.

Hybrid felsitic


References:

252 Yasawa, Mananuka, Fiji, 2006 (Dickinson, W.)