Slide: WD_7_23

Moderately sorted andesitic volcanic sand temper of probable fluvial origin composed of subangular to subrounded grains of fine to coarse sand rich in glassy volcanic rock fragments.

Mineral and Rock Abundances

Fabric: tpr20 - Guam lithic andesiitic

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%
Cal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
0 0 2 1 0 2 0 0 0 0 0 5 0 0 vitric

Images

guam_488 guam_488
Sherd 488 from Tumon Bay (Guam). Slide WD_7_23 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.

Sherd: 488

None

Period: None wikidata:

Site: Tumon Bay (Guam)

Suspected origin site: Guam

References:

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

204 Guam, Mariana, 2001 (Dickinson, W.)