Sanma Province

Wikidata ID: Q740640

Lithology and Age: Cenozoic (mafic-intermediate) volcanic and sedimentary rocks ( Chorlton (2007) )       Macrostrat Geological Map Link

Geonames ID: 2134898       Getty Thesaurus of Geographic Names ID: 7000535

Mindat Loc ID: None

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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
tpr216 ** 1 2 2 2 0 3 0 0 0 0 3 3 1 0 quartzite, plutonite, metavolcanic
Exotic Malo chrome spinel 1 2 2 2 0 3 0 0 0 0 3 3 1 0 Vanuatu
tpr217 0 0 4 3 1 2 0 0 0 0 0 4 0 0 microlitic, vitric, felsitic
Malo feldspathic 0 0 4 2 1 1 0 0 0 0 0 3 0 0 Vanuatu
tpr218 0 0 3 5 1 3 0 0 0 0 0 3 0 0 microlitic, vitric, felsitic
Malo pyroxenic 0 0 2 4 1 3 0 0 0 0 0 2 0 0 Vanuatu
tpr219 0 0 3 3 2 2 0 0 0 0 0 5 0 0 microlitic, vitric, felsitic
Santo-Malo lithic 0 0 2 2 1 1 0 0 0 0 0 5 0 0 Vanuatu
tpr213 1 0 5 6 1 2 0 0 0 0 0 3 0 0 microlitic, vitric, felsitic
Santo beach 0 0 1 2 1 1 0 0 0 0 0 2 0 0 Vanuatu
tpr214 ** 1 0 5 4 1 3 0 0 0 0 0 5 0 0 microlitic, vitric, felsitic
Santo stream 0 0 2 1 1 1 0 0 0 0 0 3 0 0 Vanuatu
tpr215 0 0 0 0 0 0 0 0 0 0 0 6 0 0 vitric
Anomalous Santo vitric 0 0 0 0 0 0 0 0 0 0 0 6 0 0 Vanuatu
tpr216a 0 6 2 0 0 0 0 0 0 0 0 2 2 0 quartzite
Exotic Santo quartzose 0 6 2 0 0 0 0 0 0 0 0 2 2 0 Vanuatu

Slides:

Slide Fabric Possible OriginCal. QuartzFeldspar Pyroxene Amphibole Opaques OlivineBiotite Muscovite Epidote Garnet/ Spinel Ig./Met. Rocks Sed. Rocks Grog Lithics
WD_57_21 tpr216 (Exotic Malo chrome spinel) New Caledonia 1 2 2 2 0 3 0 0 0 0 3 3 1 0 quartzite, plutonite, metavolcanic
WD_51_16 tpr217 (Malo feldspathic) Santo 0 0 4 2 1 2 0 0 0 0 0 3 0 0 microlitic, vitric
WD_51_17 tpr217 (Malo feldspathic) Santo 0 0 4 2 1 2 0 0 0 0 0 3 0 0 microlitic, vitric
WD_51_18 tpr217 (Malo feldspathic) Santo 0 0 4 2 1 2 0 0 0 0 0 3 0 0 microlitic, vitric
WD_51_14 tpr218 (Malo pyroxenic) Santo 0 0 3 5 1 3 0 0 0 0 0 2 0 0 microlitic, vitric
WD_51_15 tpr218 (Malo pyroxenic) Santo 0 0 2 5 1 3 0 0 0 0 0 3 0 0 microlitic, vitric
WD_51_4 tpr219 (Santo-Malo lithic) Santo 0 0 2 2 1 1 0 0 0 0 0 5 0 0 microlitic, vitric
WD_51_6 tpr219 (Santo-Malo lithic) Santo 0 0 2 2 1 2 0 0 0 0 0 5 0 0 microlitic, vitric
WD_51_8 tpr219 (Santo-Malo lithic) Santo 0 0 2 2 1 1 0 0 0 0 0 5 0 0 microlitic, vitric
WD_57_12 tpr213 (Santo beach) Santo 1 0 5 2 1 1 0 0 0 0 0 3 0 0 microlitic, vitric
WD_57_17 tpr213 (Santo beach) Santo 0 0 1 6 1 1 0 0 0 0 0 2 0 0 microlitic, vitric
WD_57_13 tpr214 (Santo stream) Santo 1 0 3 4 1 3 0 0 0 0 0 3 0 0 microlitic, vitric
WD_57_23 tpr214 (Santo stream) Santo 0 0 3 4 1 2 0 0 0 0 0 4 0 0 microlitic, vitric
WD_57_24 tpr214 (Santo stream) Santo 0 0 5 1 1 2 0 0 0 0 0 4 0 0 microlitic, vitric
WD_57_16 tpr215 (Anomalous Santo vitric) Vanuatu 0 0 0 0 0 0 0 0 0 0 0 6 0 0 vitric
WD_57_22 tpr216a (Exotic Santo quartzose) New Caledonia 0 6 2 0 0 0 0 0 0 0 0 2 2 0 quartzite
WD_51_3 tpr219 (Santo-Malo lithic) Santo 0 0 3 2 1 2 0 0 0 0 0 5 0 0 microlitic, vitric
ML_1_11 tpr214 (Santo stream) Santo 0 0 5 2 0 3 0 0 0 0 0 3 0 0 felsitic, microlitic, vitric
ML_1_12 tpr214 (Santo stream) Santo 0 0 4 4 0 2 0 0 0 0 0 3 0 0 microlitic, felsitic, vitric
ML_1_13 tpr214 (Santo stream) Santo 0 0 3 4 0 2 0 0 0 0 0 3 0 0 felsitic, microlitic

WD_57_21

Malo267 Malo267
Sherd 267 from Malo (Malo). Slide WD_57_21 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.

Chrome spinel, orthopyroxene, and serpentinite grains are characteristic of ultramafic detritus.


WD_51_16

Malo302 Malo302
Sherd 302 from Malo (Malo). Slide WD_51_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.

Dominantly plagioclase, some pyroxene, partly crystalline volcanic rock fragments, some volcanic glass.


WD_51_17

Malo213 Malo213
Sherd 213 from Malo (Malo). Slide WD_51_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.

Feldspar rich.


WD_51_18

Malo36 Malo36
Sherd 36 from Malo (Malo). Slide WD_51_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.

Dominantly plagioclase, some pyroxene, partly crystalline volcanic rock fragments, some volcanic glass, some calcareous.


WD_51_14

Malo347 Malo347
Sherd 347 from Malo (Malo). Slide WD_51_14 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.

Pyroxene rich with opaque iron oxides.


WD_51_15

Malo178 Malo178
Sherd 178 from Malo (Malo). Slide WD_51_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.

Pyroxene rich with opaque iron oxides.


WD_51_4

Malo29MK Malo29MK
Sherd 29MK from Malo (Malo). Slide WD_51_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.

Volcanic rock fragments- poorly sorted alluvial sand, microlitic with dark vitric.


WD_51_6

Malo121B Malo121B
Sherd 121B from Malo (Malo). Slide WD_51_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.

Volcanic rock fragments- poorly sorted alluvial sand, microlitic with dark vitric.


WD_51_8

Malo449 Malo449
Sherd 449 from Malo (Malo). Slide WD_51_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.

Volcanic rock fragments- poorly sorted alluvial sand, microlitic with dark vitric.


WD_57_12

SantoSAN3 SantoSAN3
Sherd SAN3 from Santo (Santo). Slide WD_57_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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. some clasts are skeletal calcareous grains of modern reef derivation (well sorted and subrounded).


WD_57_17

SantoSAN10 SantoSAN10
Sherd SAN10 from Santo (Santo). Slide WD_57_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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. Clinopyroxene dominant, but minor orthopyroxene.


WD_57_13

SantoSAN4 SantoSAN4
Sherd SAN4 from Santo (Santo). Slide WD_57_13 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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. Moderately to poorly sorted and subangular.


WD_57_23

SantoSAN6 SantoSAN6
Sherd SAN6 from Santo (Santo). Slide WD_57_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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. (moderately to poorly sorted and subangular).


WD_57_24

SantoSAN5 SantoSAN5
Sherd SAN5 from Santo (Santo). Slide WD_57_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.

Sand temper in which plagioclase and clinopyroxene mineral grains and lithic fragments of microlitic to vitric andesitic rock are the prominent grain types. (moderately to poorly sorted and subangular).


WD_57_16

SantoSAN9 SantoSAN9
Sherd SAN9 from Santo (Santo). Slide WD_57_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.

Two kinds of volcanic glass, one being dark brown mafic volcanic glass, and the other being pale tan to colorless felsic volcanic glass.


WD_57_22

Santo742T Santo742T
Sherd 742T from Santo (Santo). Slide WD_57_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.

High quartz.


WD_51_3

Santo Santo
Sherd Santo from Santo (Santo). Slide WD_51_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.

Lithic. Modern Santo sherd.


ML_1_11

WU1 WU1
Sherd WU1 from Wusi (Santo). Slide ML_1_11 from Leclerc, ANU. 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.

Plagioclase-rich, felsitic.


ML_1_12

WU2 WU2
Sherd WU2 from Wusi (Santo). Slide ML_1_12 from Leclerc, ANU. 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.

Clinopyroxene-rich.


ML_1_13

WU3 WU3
Sherd WU3 from Wusi (Santo). Slide ML_1_13 from Leclerc, ANU. 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.

Clinopyroxene-rich. Modern sherd.


References:

259 Santo, Vanuatu, 2007 (Dickinson, W.)

118 Santo and Malo, Vanuatu (Dickinson, W.)

56 Malo, Vanuatu 1974 (Dickinson, W.)

117 Vanuatu Report (Dickinson, W.)