Site: Rota (Northeast)

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

Lithology: Andesite volcanics and limestone ( Dickinson (2006) )

Lithology and Age: None ( Chorlton (2007) )       Macrostrat Geological Map Link

Near/In Geonames ID: 4041530       Wikidata ID: Q949090       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: None


In:

Northern Mariana Islands Wikidata ID: Q16644

Rota Province Wikidata ID: Q27728202

Rota Island Wikidata ID: Q949090

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
tpr25 0 0 0 0 0 2 0 0 0 0 0 6 0 0 vitric
Guam vitric 0 0 0 0 0 2 0 0 0 0 0 6 0 0 Marianas
tpr5 0 4 3 0 0 1 0 0 0 0 0 6 0 0 vitric, felsitic
Saipan dacitic 0 2 1 0 0 0 0 0 0 0 0 4 0 0 Marianas
tpr6 0 1 5 2 0 2 0 0 0 0 0 4 0 0 microlitic, felsitic, vitric
Marianas andesitic 0 0 4 1 0 2 0 0 0 0 0 3 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 OriginWareCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_8_3 tpr25 (Guam vitric) Guam Latte plainware (1000 - 429 BP) 0 0 0 0 0 2 0 0 0 0 0 6 0 0 vitric
WD_2_22 tpr5 (Saipan dacitic) Saipan Latte plainware (1000 - 429 BP) 0 2 1 0 0 0 0 0 0 0 0 6 0 0 vitric
WD_5_1 tpr6 (Marianas andesitic) Marianas Latte plainware (1000 - 429 BP) 0 0 5 2 0 2 0 0 0 0 0 3 0 0 microlitic, felsitic, vitric
WD_6_16 tpr7 (Saipan hybrid quartz) Saipan Latte plainware (1000 - 429 BP) 6 3 1 0 0 0 0 0 0 0 0 1 0 0 felsitic

WD_8_3

NECRotaR19 NECRotaR19
Sherd NECRotaR19 from Rota (Northeast) (Rota). Slide WD_8_3 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.

Poorly sorted, subangular to subrounded, andesitic volcanic sand temper rich in glassy volcanic rock fragments of tan to brown hues in thin section.


WD_2_22

RotaR117 RotaR117
Sherd RotaR117 from Rota (Northeast) (Rota). Slide WD_2_22 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.

Quartzose glass-rich volcanic sand temper.


WD_5_1

Rota_R_23 Rota_R_23
Sherd Rota-R-23 from Rota (Northeast) (Rota). Slide WD_5_1 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.

Poorly sorted, subangular to subrounded, andesitic volcanic sand temper rich in glassy volcanic rock fragments of tan to brown hues in thin section. Clinopyroxene dominant, but minor orthopyroxene.


WD_6_16

RotaR14 RotaR14
Sherd RotaR14 from Rota (Northeast) (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.


References:

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