Shefa Province

Wikidata ID: Q650617

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

Geonames ID: 2208267       Getty Thesaurus of Geographic Names ID: 7024015

Mindat Loc ID: None

Volcanoes:

Nguna-Emau: Basalt / Picro-Basalt, Composite type, Stratovolcano(es).

East Epi: Basalt / Picro-Basalt, Cluster type, Stratovolcano(es).

Kuwae: Basalt / Picro-Basalt, Caldera type, Caldera.

Pomare: , Composite type, Stratovolcano.

Tavani Ruro: , Composite type, Stratovolcano.

Tongoa: , Composite type, .

Northeast Shepherd Islands: Basalt / Picro-Basalt, Composite type, Stratovolcano(es).

Unnamed: , Composite type, Stratovolcano.

Northern Efate: , Cluster type, Stratovolcano(es).

Northwest Shepherd Islands: , Composite type, Complex.

Southern Shepherd Islands: , Composite type, Stratovolcano.

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Slides:

WD_48_17

Rock fragments are mafic, with less felsic.

WD_48_16

Rock fragments are mafic, with less felsic.

WD_48_19

Pale (felsic) vitric, may be from Efate.

WD_47_10

Vitric.

WD_58_1

Feldspathic standard Efate.

WD_58_17

Feldspathic standard Efate.

WD_58_2

Feldspathic standard Efate.

WD_47_13

Tan vitric.

WD_58_12

Vitric.

WD_58_13

Vitric.

WD_58_18

Feldspathic standard Efate.

WD_47_18

Vitric.

WD_58_6

Probably from Mele Plain.

WD_58_8

Probably from Mele Plain.

WD_58_7

Probably from Mele Plain.

WD_43_1

TC66 has a full slide scan available (user: Guest pwd: Guest). Imaged by K. Hardy and M. Leclerc, ANU.

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar, clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_3

UPLT- Unusually high microlitic/ highest local felsitic lithics.

WD_42_14

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_18

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_21

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_22

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_4

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_5

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_6

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_7

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_42_9

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_43_11

Unplacered local sand temper with plagioclase and microlitic/vitric volcanic rock fragments. Plagioclase feldspar , clinopyroxene , and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_5

Partially placered local sand temper, with dominant proportion of plagioclase, but significant proportions of clinopyroxene and opaque iron oxides. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_7

Partially placered local sand temper, with dominant proportion of plagioclase, but significant proportions of clinopyroxene and opaque iron oxides. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_9

Partially placered local sand temper, with dominant proportion of plagioclase, but significant proportions of clinopyroxene and opaque iron oxides. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_14

Hybrid-sand Efate temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_18

Hybrid partially placered sand temper.

WD_44_13

Hybrid-sand Efate temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_15

Hybrid-sand Efate temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_44_16

Hybrid-sand Efate temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_20

Hybrid-sand Efate temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_1

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Pyroxenic Efate placer sand temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_10

Pyroxenic Efate placer sand temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_6

Pyroxenic Efate placer sand temper. Plagioclase feldspar, clinopyroxene, and opaque iron oxide grains. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_12

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_11

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_13

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_14

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_15

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_45_23

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_10

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_13

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_22

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_23

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_24

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_25

Strongly placered stream sand temper with dominant proportion of opaque iron oxides and subequal proportions of plagioclase and vitric volcanic rock fragments. Microlitic fragments in which birefringent plagioclase microlites are embedded in tan to brown volcanic glass, felsitic fragments composed of microgranular quartz-feldspar mosaics formed by devitrification of felsic volcanic glass, and vitric or glassy fragments of tan to brown (or red) volcanic glass.

WD_46_4

NCMHT. K feldspar, mica and highest numbers of glaucophane.

WD_46_5

Highest number of metamorphic rock fragments.

WD_46_21

NCMT.

WD_46_3

Quartzose-rich sand temper suggeting New Caledonian origin.

WD_46_15

NCQT.

WD_46_16

NCQT.

WD_46_19

NCQT.

WD_46_12

Hornblende.

WD_46_14

HSET.

WD_46_11

Hornblende.

WD_46_9

NEHT.

WD_47_22

Vitric.

ML_1_7

Plagioclase-rich.

ML_1_8

Tan pumiceous vitrics.

ML_1_9

Tan pumiceous vitrics

ML_1_10

Tan pumiceous vitrics.

WD_47_21

Vitric.

WD_47_20

Found Tongoa (Shepherd Islands). Tan vitric.

WD_47_25

Microlitic.

WD_47_2

Vitric.

WD_47_4

Vitric.

WD_47_6

Vitric.

WD_47_8

Vitric.

WD_58_15

Vitric.

WD_47_24

Lapita sherd.

WD_47_16

Tan vitric.

WD_47_17

Tan vitric. Retoka.

WD_58_16

Feldspathic standard Efate.

References:

255 Vanuatu, 2006 (Dickinson, W.)

117 Vanuatu Report (Dickinson, W.)

282 Teouma, Efate, Vanuatu, 2009 (Dickinson, W.)

277 Teouma, Efate, Vanuata, 2009 (see 282) (Dickinson, W.)

297b Teouma, Efate, Vanuatu, 2011 (Dickinson, W.)

25 in Garanger 1972 (Dickinson, W.)