Fabric Code: tpr10

Saipan dacitic

Quartz-rich fluvial dacitic volcanic sands. Feldspar is plagioclase.

Fabric Class:

Quartzose: Dominated by quartz inclusions.

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

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 5 2 0 0 2 0 0 0 0 0 3 0 0 vitric, felsitic
Min 0 5 2 0 0 2 0 0 0 0 0 3 0 0 Marianas

Representative slides:

Slide Site Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_2_14 Ibb (Tinian) Saipan 0 5 2 0 0 2 0 0 0 0 0 3 0 0 vitric, felsitic

WD_2_14

IBB_Tinian96 IBB_Tinian96
Sherd 96 from IBB (Tinian). Slide WD_2_14 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.

Quartz-rich dacitic volcanic sand temper.


References:

323 Mariana, reports 1-15 for MTAT, 1998 (Dickinson, W.)