Site: Ngulu

Island: Ngulu


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
tpr34 0 0 0 0 0 0 0 0 0 0 0 6 0 0 metavolcanic
Yap natural metavolcanic type A 0 0 0 0 0 0 0 0 0 0 0 6 0 0 Carolines
tpr35 4 0 0 0 0 0 0 0 0 0 0 6 0 0 metavolcanic
Yap hybrid lithic metavolcanic 2 0 0 0 0 0 0 0 0 0 0 5 0 0 Carolines
tpr37 0 0 4 4 0 0 0 0 0 0 0 2 0 0 metavolcanic
Yap natural metavolcanic type D 0 0 3 3 0 0 0 0 0 0 0 2 0 0 Carolines
tpr39 0 0 0 0 0 0 0 0 0 0 0 0 0 6 na
Yap grog 0 0 0 0 0 0 0 0 0 0 0 0 0 6 Carolines
tpr41 0 5 2 0 0 0 0 0 0 0 0 0 5 3 chert
Palau-Yap quartzose grog 0 3 0 0 0 0 0 0 0 0 0 0 3 2 Carolines
tpr42 0 6 2 1 0 0 0 0 0 1 0 1 0 0 microphaneritic
Yap quartzose 0 6 0 0 0 0 0 0 0 0 0 0 0 0 Carolines

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_10_12 tpr34 (Yap natural metavolcanic type A) Yap 0 0 0 0 0 0 0 0 0 0 0 6 0 0 metavolcanic
WD_10_14 tpr35 (Yap hybrid lithic metavolcanic) Yap 3 0 0 0 0 0 0 0 0 0 0 6 0 0 metavolcanic
WD_10_13 tpr37 (Yap natural metavolcanic type D) Yap 0 0 4 4 0 0 0 0 0 0 0 2 0 0 metavolcanic
WD_10_8 tpr37 (Yap natural metavolcanic type D) Yap 0 0 4 4 0 0 0 0 0 0 0 2 0 0 metavolcanic
WD_10_10 tpr39 (Yap grog) Palau 0 0 0 0 0 0 0 0 0 0 0 0 0 6 na
WD_10_6 tpr39 (Yap grog) Palau 0 0 0 0 0 0 0 0 0 0 0 0 0 6 na
WD_10_9 tpr41 (Palau-Yap quartzose grog) Palau 0 4 2 0 0 0 0 0 0 0 0 0 4 3 chert
WD_10_7 tpr42 (Yap quartzose) Yap 0 6 0 1 0 0 0 0 0 1 0 1 0 0 microphaneritic

WD_10_12

Ngulu1 Ngulu1
Sherd 1 from Ngulu (Ngulu). Slide WD_10_12 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) with higher exposure. Imaged by K. Hardy and M. Leclerc, ANU.

Foliated, polycrystalline metavolcanic rock temper sand, from Yap.


WD_10_14

Ngulu9 Ngulu9
Sherd 9 from Ngulu (Ngulu). Slide WD_10_14 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.

Yap metavolcanic temper admixed with calcareous grains (reef detritus).


WD_10_13

Ngulu2 Ngulu2
Sherd 2 from Ngulu (Ngulu). Slide WD_10_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.

Temper sand mainly composed of plagioclase and clinopyroxene grains, but with subordinate proportions of Yap metavolcanics.


WD_10_8

Ngulu3 Ngulu3
Sherd 3 from Ngulu (Ngulu). Slide WD_10_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.

Temper sand mainly composed of plagioclase and clinopyroxene grains, but with subordinate proportions of Yap metavolcanics.


WD_10_10

Ngulu4 Ngulu4
Sherd 4 from Ngulu (Ngulu). Slide WD_10_10 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.

Broken-sherd temper indistinguishable from temper in sherds from Palau.


WD_10_6

Ngulu8 Ngulu8
Sherd 8 from Ngulu (Ngulu). Slide WD_10_6 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.

Broken-sherd temper indistinguishable from temper in sherds from Palau.


WD_10_9

Ngulu5 Ngulu5
Sherd 5 from Ngulu (Ngulu). Slide WD_10_9 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.

Broken-sherd temper in which quartzose and cherty grains are abundant.


WD_10_7

Ngulu6 Ngulu6
Sherd 6 from Ngulu (Ngulu). Slide WD_10_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.

Quartzose temper whose grains include mainly quartz and polycrystalline quartz-albite fragments with microgranular texture, although albite, epidote, and clinopyroxene grains are also present.


References:

089 Yap 1981 (Dickinson, W.)