Table T4. Petrographic features of sediments from Woodlark Basin northern margin Site 1115.

Age	Core, section, interval (cm)	Depth (mbsf)	Lithology	Matrix/Cement	Lithic fragments	Bioclasts	Organic carbon
	180-1115B-
Pleistocene	1H-5, 63-68	6.63	Siltstone
	8H-5, 75-80	70.95	Siltstone
	10H-4, 55-61.5	88.25	Siltstone
late Pliocene	16H-1, 84-88	141.04	Siltstone
	21H-4, 44-49	192.64	Siltstone
early to middle Pliocene	23H-6, 44-47	214.64	Siltstone
	27X-2, 11-15	246.61	Siltstone
	28X-CC, 20-23	256.75	Siltstone			Foraminifers
	29X-4, 17-24	268.97	Siltstone
	30X-CC, 39-40	275.36	Siltstone
	180-1115C-
	1R-1, 67-71	283.87	Siltstone
	2R-1, 17-19	292.97	Siltstone		Shards, volcanics, felsites	Planktonic foraminifers
	5R-1, 40-42	322.13	Siltstone			Planktonic and benthic foraminifers
	6R-2, 17-19	333.07	Fine-grained sandstone
	6R-5, 114-116	338.54	Sandy siltstone		Volcanics, andesites
	7R-2, 33-34	342.79	Sandy siltstone			Planktonic foraminifers
	7R-3, 133-135	345.25	Sandy siltstone
	8R-1, 64-66	351.24	Sandy siltstone
	9R-2, 80-83	361.89	Clayey siltstone
	10R-1, 5-7	369.55	Clayey siltstone		Volcanics, andesites	Planktonic and benthic foraminifers
	11R-4, 57-58	383.99	Clayey siltstone		Volcanics, andesites	Planktonic and benthic foraminifers
late Miocene	12R-4, 144-148	394.34	Clayey siltstone		Andesites
	12R-5, 50-53	394.90	Clayey siltstone		Andesites
	12R-6, 59-61	396.49	Clayey siltstone
	13R-4, 140-143	403.55	Clayey siltstone			Benthic foraminifers
	14R-2, 53-55	409.67	Clayey siltstone
	14R-2, 68-70	409.82	Conglomerate		Andesites	Foraminifers, mollusks
	15R-3, 79-83	421.09	Grainstone		Volcanics		X, inside tests
	16R-2, 4-7	427.73	Packstone
	19R-CC, 8-10	456.10	Fine-grained sandstone	Carbonatic matrix
	21R-3, 91-93	477.59	Wackestone			Benthic foraminifers
	21R-4, 108-112	479.08	Fine- to medium-grained sandstone
	22R-3, 104-105	487.80	Fine- to medium-grained sandstone	Carbonatic matrix
	23R-1, 93-94	495.05	Fine- to medium-grained sandstone	Carbonatic matrix	Andesites	mollusks, benthic foraminifers, echinoderms
	24R-3, 49-50	507.29	Fine-grained sandstone	Carbonatic matrix		Benthic foraminifers, mollusks
	25R-2, 56-57	515.46	Fine- to medium-grained sandstone
	26R-1, 8-9	523.08	Sandstone			Benthic foraminifers
	27R-CC, 7-8	533.12	Silty sandstone	Carbonatic matrix		mollusks
	29R-1, 72-73	552.52	Medium-grained sandstone	Sparry matrix	Shards, andesites, felsites, serpentinites
	29R-1, 82-83	552.62	Fine-grained sandstone	Carbonatic matrix
	29R-3, 10-13	554.39	Fine-grained sandstone
	30R-3, 105-110	564.35	Fine-grained sandstone
	30R-5, 45-48	566.46	Fine-grained sandstone
	30R-CC, 10-12	566.83	Medium-grained sandstone to conglomerate	Sparry matrix	Volcanics, andesites, granophyres, felsites, basalts, dolerites, gabbros, epidosites	Algae
	30R-CC, 16-19	566.89	Coarse-grained sandstone		Andesites, felsites
middle Miocene	31R-1, 94-96	571.94	Fine-grained sandstone				X
	32R-1, 78-81	581.38	Fine-grained sandstone
	32R-1, 138-140	581.98	Fine- to coarse-grained sandstone
	32R-3, 52-55	583.49	Fine- to coarse-grained sandstone
	33R-3, 68-71	593.74	Packstone	Carbonatic mud	Andesites	Benthic foraminifers	X
	34R-2, 124-126	602.52	Packstone	Carbonatic mud
	35R-1, 85-88	610.25	Packstone	Carbonatic mud	Andesites	Benthic organisms
	35R-4, 12-17	613.79	Silty claystone		Andesites, sandstones
	35R-4, 102-105	614.69	Silty claystone	Pelitic/carbonatic		Benthic and planktonic foraminifers	X
	36R-1, 137-140	620.47	Silty claystone
	36R-2, 25-27	620.75	Laminated sandstone			Foraminifers
	37R-CC, 1-3	628.81	Fine-grained sandstone		Andesites, tephrites
	39R-CC, 1-2	648.11
	40R-2, 105-107	660.35	Siltstone				X
	42R-1, 26-28	677.36
	42R-3, 138-141	680.78	Silty claystone	Pelitic		Planktonic foraminifers
	43R-4, 111-115	692.14	Siltstone				X
	48R-2, 13-17	736.41	Clayey siltstone	Pelitic		Foraminifers, mollusks	X
	48R-3, 81-83	738.46
	50R-1, 18-21	754.48	Siltstone			Planktonic foraminifers	X
	51R-1, 119-120	765.09	Siltstone			Planktonic and benthic foraminifers	X
	52R-3, 61-71	776.76	Clayey siltstone			Planktonic foraminifers	X
	53R-3, 118-120	787.22	Packstone	Carbonatic mud	Shards, andesites	Benthic foraminifers, red algae
	53R-6, 42-45	790.35	Clayey siltstone	Carbonatic matrix		Planktonic and benthic foraminifers, mollusks
	54R-1, 94-98	793.74	Clayey siltstone	Carbonatic matrix

Notes: Lithic fragments: gabbro includes olivine gabbro, oxide gabbro, and diorite compositions; basalt and dolerite refer to tholeiitic serial affinity; andesite includes calc-alkaline basalt andesite and andesite to quartz andesite; felsite refers to dacite and rhyolite compositions; trachyte includes lava clasts and glass with K-feldspar microliths; granophyre indicates fine-grained eutectic quartz-feldspar intergrowth; shards include ash fall tephra or prevalent glassy matrix in turbidites; volcanics include fragments of uncertain definition. Prh = prehnite, Pmp = pumpellyite, X = present.