Fabric Code: tpr7

Saipan hybrid quartz

Hybrid (CQT) temper sands. Dacitic and reef origin. Feldspar is plagioclase.

Fabric Class:

Calcareous: Dominated by calcareous 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 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic
Min 6 1 1 0 0 0 0 0 0 0 0 1 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_6_16 Rota (Nec) (Rota) Saipan 6 3 1 0 0 0 0 0 0 0 0 1 0 0 felsitic
WD_8_23 Unai Achugao (Saipan) Saipan 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic
WD_8_25 Unai Achugao (Saipan) Saipan 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic
WD_6_14 Casino (Tinian) Saipan 6 2 1 0 0 1 0 0 0 0 0 1 0 0 felsitic
WD_6_2 Chalan Piao (Saipan) Saipan 6 2 1 0 0 0 0 0 0 0 0 1 0 0 felsitic
WD_6_7 Chalan Piao (Saipan) Saipan 6 2 1 0 0 0 0 0 0 0 0 1 0 0 felsitic

WD_6_16

RotaR14 RotaR14
Sherd RotaR14 from Rota (NEC) (Rota). Slide WD_6_16 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 calcareous-quartz beach sand temper.


WD_8_23

achugaoN226 achugaoN226
Sherd N226 from Unai Achugao (Saipan). Slide WD_8_23 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 quartz grains and calcareous detritus.


WD_8_25

achugaoN250 achugaoN250
Sherd N250 from Unai Achugao (Saipan). Slide WD_8_25 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 quartz grains and calcareous detritus.


WD_6_14

Tinian117B Tinian117B
Sherd 117B from Casino (Tinian). Slide WD_6_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.

Hybrid temper sand (85-90% of total grain population is calcareous reef detritus). Pre-latte.


WD_6_2

ChalanPico15_10 ChalanPico15_10
Sherd 15-10 from Chalan Piao (Saipan). Slide WD_6_2 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-calcite temper.


WD_6_7

ChalanPicoCP5 ChalanPicoCP5
Sherd CP5 from Chalan Piao (Saipan). Slide WD_6_7 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-calcite temper, dacitic and reef deitrius source. Pre latte red-ware lime-filled. Manually added.


References:

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