Site: Tefa

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

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

Near/In Geonames ID: 2085614 Wikidata ID: Q7694617 Getty Thesaurus of Geographic Names ID: None

Mindat Loc ID: 344337

In:

New Ireland Province Wikidata ID: Q838690

Tanga Group Wikidata ID: Q1401361

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.	Quartz	Feldspar	Pyroxene	Amphibole	Opaques	Olivine	Biotite	Muscovite	Epidote	Garnet/ Spinel	Ig./Met. Rocks	Sed. Rocks	Grog	Lithics/ Region
tpr315	0	0	6	3	0	2	0	2	0	0	0	2	0	0	vitric
Tanga feldspathic pyroxenic mica	0	0	5	2	0	1	0	1	0	0	0	1	0	0	Bismarck
tpr317	0	0	2	6	0	3	1	1	0	0	0	1	0	0	lathwork, microlitic
Tanga pyroxene placer	0	0	1	5	0	2	0	0	0	0	0	1	0	0	Bismarck
tpr318	2	0	2	5	1	6	1	1	0	0	0	3	0	0	lathwork, microlitic
Tanga pyroxene opaque placer	0	0	1	3	0	4	0	0	0	0	0	1	0	0	Bismarck
tpr320	3	0	2	1	0	1	0	0	0	0	0	5	0	0	microlitic, felsitic, vitric
Tanga lithic hybrid	2	0	2	1	0	1	0	0	0	0	0	5	0	0	Bismarck
tpr322	0	0	6	4	2	2	0	0	0	0	0	3	0	0	vitric, felsitic, microlitic
Tanga hornblendic pyroxenic	0	0	4	2	1	2	0	0	0	0	0	2	0	0	Bismarck

Slides:

Slide	Fabric	Possible Origin	Cal.	Quartz	Feldspar	Pyroxene	Amphibole	Opaques	Olivine	Biotite	Muscovite	Epidote	Garnet/ Spinel	Ig./Met. Rocks	Sed. Rocks	Grog	Lithics
WD_33_12	tpr315 (Tanga feldspathic pyroxenic mica)	Tanga	0	0	6	3	0	1	0	1	0	0	0	1	0	0	vitric
WD_33_14	tpr315 (Tanga feldspathic pyroxenic mica)	Tanga	0	0	6	2	0	1	0	2	0	0	0	1	0	0	vitric
WD_30_9	tpr318 (Tanga pyroxene opaque placer)	Tanga	0	0	1	4	0	5	0	0	0	0	0	1	0	0	microlitic, lathwork
WD_30_3	tpr317 (Tanga pyroxene placer)	Tanga	0	0	2	6	0	2	0	0	0	0	0	1	0	0	lathwork, microlitic
WD_30_18	tpr320 (Tanga lithic hybrid)	Unknown.	3	0	2	1	0	1	0	0	0	0	0	5	0	0	microlitic, felsitic, vitric
WD_30_25	tpr322 (Tanga hornblendic pyroxenic)	Feni	0	0	4	3	2	2	0	0	0	0	0	3	0	0	vitric, felsitic, microlitic

WD_33_12

Tefa_ETE1 — Sherd ETE1 from Tefa (Tanga). Slide WD_33_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). Imaged by K. Hardy and M. Leclerc, ANU.

Tefa_ETE1 — Sherd ETE1 from Tefa (Tanga). Slide WD_33_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). Imaged by K. Hardy and M. Leclerc, ANU.

Baba. Feldspathic temper sand that contains abundant clinopyroxene and sparse mica.

WD_33_14

Tefa_ETF4 — Sherd ETF4 from Tefa (Tanga). Slide WD_33_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.

Tefa_ETF4 — Sherd ETF4 from Tefa (Tanga). Slide WD_33_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.

Ansingsing. Feldspathic temper sand that contains abundant clinopyroxene and sparse mica.

WD_30_9

Tefa_ETF2 — Sherd ETF2 from Tefa (Tanga). Slide WD_30_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.

Tefa_ETF2 — Sherd ETF2 from Tefa (Tanga). Slide WD_30_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.

Ansingsing. Mixed pyroxene/opaque iron oxide ferromagnesian placer sand temper.

WD_30_3

Tefa_ETF3 — Sherd ETF3 from Tefa (Tanga). Slide WD_30_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.

Tefa_ETF3 — Sherd ETF3 from Tefa (Tanga). Slide WD_30_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.

Ansingsing. Pyroxene-rich ferromagnesian placer sand temper.

WD_30_18

Tefa_ETF1 — Sherd ETF1 from Tefa (Tanga). Slide WD_30_18 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.

Tefa_ETF1 — Sherd ETF1 from Tefa (Tanga). Slide WD_30_18 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.

Ansingsing. Well sorted, strongly abraded, hybrid lithic, non-placer aggregate temper sand. Microlitic rocks dominant, also felsitic and vitric.

WD_30_25

Tefa_ETE2 — Sherd ETE2 from Tefa (Tanga). Slide WD_30_25 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.

Tefa_ETE2 — Sherd ETE2 from Tefa (Tanga). Slide WD_30_25 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.

Baba. Hornblendic-pyroxenic aggregate temper sand, subangular to subrounded, moderately sorted, and variably placered.

References:

239 Tanga, PNG, 2004 (Dickinson, W.)

293 Vella Lavella, Roviana, New Georgia group, Solomon, 2011 (Dickinson, W.)