Site: Unai Achugao

Island: Saipan       Lithology: Composite high island ( Nunn et al. (2016) )

Lithology and Age: Cenozoic sedimentary rocks ( Chorlton (2007) )       Macrostrat Geological Map Link

Near/In Geonames ID: 4041100       Wikidata ID: None       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: 214441


In:

Northern Mariana Islands Wikidata ID: Q16644

Saipan Province Wikidata ID: Q9332790

Saipan Island Wikidata ID: Q51679

Mariana Islands Wikidata ID: Q153732

Note that to see the 'Geology' layer (layer options in top right corner) you may have to zoom out.


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
tpr4 3 5 2 1 0 2 0 0 0 0 0 3 0 0 limeclast, felsitic, microlitic
Saipan quartz-rich 2 5 2 0 0 2 0 0 0 0 0 2 0 0 Marianas
tpr7 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic
Saipan hybrid quartz 6 1 1 0 0 0 0 0 0 0 0 1 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_6_15 tpr4 (Saipan quartz-rich) Saipan 3 5 2 0 0 2 0 0 0 0 0 3 0 0 limeclast
WD_8_23 tpr7 (Saipan hybrid quartz) Saipan 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic
WD_8_25 tpr7 (Saipan hybrid quartz) Saipan 6 3 1 0 0 2 0 0 0 0 0 1 0 0 felsitic

WD_6_15

NansayNAN1 NansayNAN1
Sherd NansayNAN1 from Unai Achugao (Saipan). Slide WD_6_15 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.

Pre-Latte sherd. Quartz-rich quartzose 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.


References:

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