Yap

Wikidata ID: Q11342951

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

Geonames ID: 2081175       Getty Thesaurus of Geographic Names ID: 7018511

Mindat Loc ID: 446144

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Many fabrics have a range of abundances. The range maximum (top) and minimum (bottom) are shown.

** Has full slide image available.

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
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
tpr43 6 0 0 0 0 3 0 0 0 0 0 3 0 0 metavolcanic
Yap hybrid metavolcanic 6 0 0 0 0 3 0 0 0 0 0 3 0 0 Carolines
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
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
tpr272 ** 0 0 4 0 1 2 0 0 4 0 0 6 0 0 metavolcanic
Yap metavolcanic 0 0 0 0 0 0 0 0 1 0 0 4 0 0 Carolines
tpr36 6 0 0 0 0 0 0 0 0 0 0 2 0 0 metavolcanic
Yap hybrid 6 0 0 0 0 0 0 0 0 0 0 1 0 0 Carolines
tpr38 6 0 2 2 0 2 0 0 0 0 0 1 0 0 metavolcanic
Yap hybrid calcareous 6 0 1 1 0 1 0 0 0 0 0 1 0 0 Carolines
tpr40 0 0 0 0 0 0 0 0 0 0 0 4 0 3 metavolcanic
Yap grog metavolcanic 0 0 0 0 0 0 0 0 0 0 0 3 0 3 Carolines

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_10_1 tpr41 (Palau-Yap quartzose grog) Palau 0 2 2 0 0 0 0 0 0 0 0 0 3 3 na
WD_10_3 tpr41 (Palau-Yap quartzose grog) Palau 0 2 2 0 0 0 0 0 0 0 0 0 3 3 na
WD_10_4 tpr41 (Palau-Yap quartzose grog) Palau 0 2 2 0 0 0 0 0 0 0 0 0 3 3 na
WD_10_2 tpr43 (Yap hybrid metavolcanic) Yap 6 0 0 0 0 3 0 0 0 0 0 3 0 0 metavolcanic
WD_10_5 tpr43 (Yap hybrid metavolcanic) Yap 6 0 0 0 0 3 0 0 0 0 0 3 0 0 metavolcanic
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_9_4 tpr272 (Yap metavolcanic) Yap 0 0 0 0 0 2 0 0 1 0 0 6 0 0 metavolcanic
WD_9_2 tpr272 (Yap metavolcanic) Yap 0 0 4 0 1 0 0 0 1 0 0 4 0 0 metavolcanic
WD_9_5 tpr272 (Yap metavolcanic) Yap 0 0 0 0 0 0 0 0 4 0 0 4 0 0 metavolcanic
WD_9_7 tpr272 (Yap metavolcanic) Yap 0 0 0 0 0 2 0 0 1 0 0 6 0 0 metavolcanic
WD_9_8 tpr272 (Yap metavolcanic) Yap 0 0 0 0 0 2 0 0 1 0 0 6 0 0 metavolcanic
WD_9_10 tpr36 (Yap hybrid) Yap 6 0 0 0 0 0 0 0 0 0 0 2 0 0 metavolcanic
WD_9_12 tpr36 (Yap hybrid) Yap 6 0 0 0 0 0 0 0 0 0 0 2 0 0 metavolcanic
WD_10_11 tpr38 (Yap hybrid calcareous) Yap 6 0 1 1 0 2 0 0 0 0 0 1 0 0 metavolcanic
WD_9_15 tpr40 (Yap grog metavolcanic) Yap 0 0 0 0 0 0 0 0 0 0 0 4 0 3 metavolcanic
WD_9_14 tpr41 (Palau-Yap quartzose grog) Yap 0 4 0 0 0 0 0 0 0 0 0 0 4 2 chert
WD_9_1 tpr41 (Palau-Yap quartzose grog) Yap 0 4 0 0 0 0 0 0 0 0 0 0 4 2 chert
WD_9_13 tpr41 (Palau-Yap quartzose grog) Yap 0 4 0 0 0 0 0 0 0 0 0 0 4 2 chert
WD_9_16 tpr42 (Yap quartzose) Yap 0 6 2 0 0 1 0 0 0 1 0 1 0 0 microphaneritic
WD_9_17 tpr42 (Yap quartzose) Yap 0 6 2 0 0 1 0 0 0 0 0 1 0 0 microphaneritic
WD_9_20 tpr42 (Yap quartzose) Yap 0 6 2 0 0 1 0 0 0 0 0 1 0 0 microphaneritic

WD_10_1

lamotrek12 lamotrek12
Sherd 12 from Lamotrek (Lamotrek). Slide WD_10_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.

Palau origin.


WD_10_3

lamotrek5 lamotrek5
Sherd 5 from Lamotrek (Lamotrek). Slide WD_10_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.

Broken-sherd aggregate temper sand. Palau origin.


WD_10_4

lamotrek44_2 lamotrek44_2
Sherd 44-2 from Lamotrek (Lamotrek). Slide WD_10_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.

Palau origin.


WD_10_2

lamotrek14 lamotrek14
Sherd 14 from Lamotrek (Lamotrek). Slide WD_10_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.

Moderately sorted, subrounded shoreline temper sand. Yap origin.


WD_10_5

lamotrek11_33236 lamotrek11_33236
Sherd 11-33236 from Lamotrek (Lamotrek). Slide WD_10_5 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.

Probably 44_1.


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 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.


WD_9_4

yap19_1 yap19_1
Sherd 19-1 from Yap (Yap). Slide WD_9_4 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.

Metavolcanic greenschist, schist micaceous.


WD_9_2

yap47_1 yap47_1
Sherd 47-1 from Yap (Yap). Slide WD_9_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.

Detritus derived mostly from metavolcanic greenschist.


WD_9_5

yap19_4 yap19_4
Sherd 19-4 from Yap (Yap). Slide WD_9_5 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.

Micaceous metavolcanic greenschist.


WD_9_7

yap43_3 yap43_3
Sherd 43-3 from Yap (Yap). Slide WD_9_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.

Yap natural metavolcanic.


WD_9_8

yap43_8 yap43_8
Sherd 43-8 from Yap (Yap). Slide WD_9_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.

Yap natural metavolcanic.


WD_9_10

yap14 yap14
Sherd 14 from Yap (Yap). Slide WD_9_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.

Temper in which calcareous grains are dominant, but are admixed with minor amounts of Yap metavolcanics.


WD_9_12

yap16 yap16
Sherd 16 from Yap (Yap). Slide WD_9_12 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 in which calcareous grains are dominant, but are admixed with minor amounts of Yap metavolcanics.


WD_10_11

yap15 yap15
Sherd 15 from Yap (Yap). Slide WD_10_11 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 indistinguishable from temper in sherds from Palau.


WD_9_15

yap18 yap18
Sherd 18 from Yap (Yap). Slide WD_9_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.

Broken-sherd temper in which metavolcanic lithics indistinguishable from those of Yap metavolcanic temper also occur.


WD_9_14

yap17 yap17
Sherd 17 from Yap (Yap). Slide WD_9_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.

Broken-sherd temper, with quartzose and cherty grains.


WD_9_1

yap13 yap13
Sherd 13 from Yap (Yap). Slide WD_9_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.

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


WD_9_13

yap12 yap12
Sherd 12 from Yap (Yap). Slide WD_9_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.

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


WD_9_16

yap19_6 yap19_6
Sherd 19-6 from Yap (Yap). Slide WD_9_16 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.

Quartzose temper with quartz and polycrystalline quartz-albite fragments with microgranular texture, also present albite, epidote, and clinopyroxene.


WD_9_17

yap43_5 yap43_5
Sherd 43-5 from Yap (Yap). Slide WD_9_17 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.


WD_9_20

yap43_1 yap43_1
Sherd 43-1 from Yap (Yap). Slide WD_9_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.

Quartzose.


References:

016 Yap 1967 (Dickinson, W.)

075 Yap, Palau 1978 (Dickinson, W.)

089 Yap 1981 (Dickinson, W.)

069 Central Caroline 1977 (Dickinson, W.)

064 Lamotrek, Caroline 1977 (Dickinson, W.)