Site: To'aga

Island: Ofu       Lithology: Volcanic high island ( Nunn et al. (2016) )

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

Near/In Geonames ID: 5881120       Wikidata ID: None       Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: None


In:

Ofu Island Wikidata ID: Q3881068

American Samoa Wikidata ID: Q16641

Samoan Islands Wikidata ID: Q162126


Volcanoes:

Ofu-Olosega: Basalt / Picro-Basalt, Shield type, Shield(s).

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
tpr290a 0 0 5 0 0 2 0 0 0 0 0 6 0 0 microlitic, vitric
Samoan crushed microlitic lithic 0 0 3 0 0 0 0 0 0 0 0 4 0 0 Samoa
tpr292 0 0 0 5 0 1 3 0 0 0 0 3 0 0 vitric, lathwork
Samoan ferromagnesian stream 0 0 0 5 0 1 3 0 0 0 0 3 0 0 Samoa
tpr295 0 0 1 5 0 3 4 0 0 0 0 6 0 0 lathwork, vitric
Samoan ferromagnesian beach 0 0 0 3 0 1 2 0 0 0 0 3 0 0 Samoa
tpr291 3 0 2 3 1 3 3 1 0 0 0 6 0 0 lathwork, vitric
Samoan lithic 0 0 0 1 0 0 1 0 0 0 0 4 0 0 Samoa
tpr291b 6 0 1 2 0 1 1 0 0 0 0 2 0 0 lathwork, vitric
Samoan calcareous 5 0 0 2 0 0 1 0 0 0 0 3 0 0 Samoa

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_22_21 tpr290a (Samoan crushed microlitic lithic) Samoa 0 0 5 0 0 1 0 0 0 0 0 4 0 0 lathwork, microlitic
WD_24_1 tpr291 (Samoan lithic) Samoa 0 0 0 1 0 2 2 0 0 0 0 6 0 0 lathwork, microlitic
WD_24_13 tpr291 (Samoan lithic) Samoa 3 0 1 3 0 1 3 0 0 0 0 4 0 0 lathwork, microlitic
WD_24_18 tpr291b (Samoan calcareous) Samoa 6 0 1 2 0 1 1 0 0 0 0 2 0 0 lathwork, microlitic
WD_24_19 tpr292 (Samoan ferromagnesian stream) Samoa 0 0 0 5 0 1 3 0 0 0 0 3 0 0 vitric, lathwork
WD_24_20 tpr292 (Samoan ferromagnesian stream) Samoa 0 0 0 5 0 1 3 0 0 0 0 3 0 0 vitric, lathwork
WD_24_23 tpr292 (Samoan ferromagnesian stream) Samoa 0 0 0 5 0 1 3 0 0 0 0 3 0 0 vitric, lathwork
WD_24_24 tpr292 (Samoan ferromagnesian stream) Samoa 0 0 0 5 0 1 3 0 0 0 0 3 0 0 vitric, lathwork
WD_24_4 tpr295 (Samoan ferromagnesian beach) Samoa 0 0 0 4 0 1 2 0 0 0 0 5 0 0 lathwork

WD_22_21

Toaga_MAS_18 Toaga_MAS_18
Sherd 18 from To'aga (Ofu). Slide WD_22_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.

Feldspathic basaltic temper.


WD_24_1

Toaga_MAS_6 Toaga_MAS_6
Sherd 6 from To'aga (Ofu). Slide WD_24_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.

Sparse basaltic temper.


WD_24_13

Toaga_MAS_26 Toaga_MAS_26
Sherd 26 from To'aga (Ofu). Slide WD_24_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.

Mixed temper.


WD_24_18

Toaga_MAS_30 Toaga_MAS_30
Sherd 30 from To'aga (Ofu). Slide WD_24_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.

Calcareous temper.


WD_24_19

Toaga_MAS_1 Toaga_MAS_1
Sherd 1 from To'aga (Ofu). Slide WD_24_19 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.

Profuse basaltic temper.


WD_24_20

Toaga_MAS_2 Toaga_MAS_2
Sherd 2 from To'aga (Ofu). Slide WD_24_20 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.

Profuse basaltic temper.


WD_24_23

Toaga_MAS_5 Toaga_MAS_5
Sherd 5 from To'aga (Ofu). Slide WD_24_23 from Dickinson Collection, Bishop Museum. x4 Magnification PPL (left) XPL (right). Scale bar: 0.5mm. High resolution image or full slide in VIMIPO (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Profuse basaltic temper.


WD_24_24

Toaga_MAS_7 Toaga_MAS_7
Sherd 7 from To'aga (Ofu). Slide WD_24_24 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.

Profuse basaltic temper.


WD_24_4

Toaga_MAS_19 Toaga_MAS_19
Sherd 19 from To'aga (Ofu). Slide WD_24_4 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.

Sparse basaltic temper.


References:

098 Toaga, Ofu Island, Manua Group, American Samoa 1990 (Dickinson, W.)