Fabric Code: tpr15

Saipan andesitic

Quartz-poor (andesitic) volcanic sands in sherds with red pastes. Clinopyroxene and orthopyroxene 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 0 0 4 2 0 3 0 0 0 0 0 6 0 0 vitric, microlitic, felsitic
Min 0 0 3 1 0 1 0 0 0 0 0 5 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_4_24 Aguijan (Aguijan) Saipan 0 0 4 2 0 1 0 0 0 0 0 5 0 0 vitric, microlitic, felsitic
WD_4_18 Kahet (Tinian) Saipan 0 0 4 1 0 2 0 0 0 0 0 5 0 0 vitric, microlitic
WD_4_21 Aguijan (Aguijan) Saipan 0 0 3 1 0 3 0 0 0 0 0 5 0 0 vitric, microlitic, felsitic
WD_4_5 Regusa (Pagan) Saipan 0 0 4 1 0 1 0 0 0 0 0 5 0 0 vitric, microlitic
WD_4_8 Sanmeima (Pagan) Saipan 0 0 3 1 0 1 0 0 0 0 0 5 0 0 vitric, microlitic

WD_4_24

46-29-205 has a full slide scan available. Imaged by K. Hardy and M. Leclerc, ANU.

Quartz-poor (andesitic) volcanic sands in sherds with red pastes. Clinopyroxene dominant, but minor orthopyroxene.


WD_4_18

KahetTinian_01T KahetTinian_01T
Sherd 01T from Kahet (Tinian). Slide WD_4_18 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.

Hybrid with much leeching of calcareous grains, so numbers may be unrepresentative.


WD_4_21

AguijanAG_7_1_32 AguijanAG_7_1_32
Sherd AG-7-1-32 from Aguijan (Aguijan). Slide WD_4_21 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-poor (andesitic) volcanic sands in sherds with red pastes.


WD_4_5

Pagan69_1 Pagan69_1
Sherd 69-1 from Regusa (Pagan). Slide WD_4_5 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-free aggregate volcanic sand temper in which microlitic volcanic rock fragments of intermediate character are dominant.


WD_4_8

SanmeimaPAG_3 SanmeimaPAG_3
Sherd PAG-3 from Sanmeima (Pagan). Slide WD_4_8 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.

Moderately sorted and mineralogically complex andesitic volcanic sand temper of fine to coarse size and probable fluvial origin.


References:

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