Site: Talafofo

Island: Guam


Fabrics:

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
tpr20 0 0 3 3 0 3 0 0 0 0 0 6 0 0 vitric, microlitic
Guam lithic andesiitic 0 0 1 1 0 1 0 0 0 0 0 5 0 0 Marianas

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_5_13 tpr20 (Guam lithic andesiitic) Guam 0 0 2 1 0 2 0 0 0 0 0 6 0 0 microlitic
WD_5_9 tpr20 (Guam lithic andesiitic) Guam 0 0 2 2 0 0 0 0 0 0 0 5 0 0 felsitic, vitric

WD_5_13

Ma_GU_8_7 Ma_GU_8_7
Sherd Ma-GU-8-7 from Talafofo (Guam). Slide WD_5_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.

Groundmass rock fragment suite distinct from that at Nomna Bay (more microlitic than vitric).


WD_5_9

Ma_GU_8_4 Ma_GU_8_4
Sherd Ma-GU-8-4 from Talafofo (Guam). Slide WD_5_9 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.

Lithic-rich volcanic sand temper.


References:

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

028 Nomna Bay, Fouha Bay, Guam 1968 (Dickinson, W.)