Table T11. Major element oxides with selected trace elements, Hole 1188A.

Core, section: 193-1188A-:	2R-1	5R-1*	7R-1	7R-1*	7R-2	8R-1	8R-1	9R-1	9R-2*	11R-1	12R-2	14R-1	14R-1	14R-1	14R-1*	16R-1	16R-1
Interval (cm):	9-12	42-45	62-64	62-64	39-41	66-69	124-127	67-70	79-81	34-38	48-51	47-51	105-108	105-108	105-108	95-98	95-98
Curated depth (mbsf):	9.69	34.02	48.82	48.82	50.09	58.56	59.14	68.27	69.89	87.25	98.56	116.47	117.05	117.05	117.05	136.35	136.35
Rock type:	FD	AD	AD	AD	BR	BR	BR	BR	BR	AD	BR	BR	BR	BR†	BR	AD	AD†
Alteration style:	F	Bl	Sil/Bl	Sil/Bl	Sil/GSC	GSC	GSC	Bl	Bl	Sil/Bl	Sil/GSC	Bl/Sil	Bl/Sil	Bl/Sil	Bl/Sil	Sil	Sil
Ignited rock powder composition*:
Major element oxide (wt%):
SiO2	69.24	70.51	67.68	67.55	67.31	69.81	66.96	74.98	70.50	68.99	69.11	71.82	75.17	75.75	77.22	72.18	71.71
TiO2	0.45	0.52	0.57	0.53	0.54	0.54	0.54	0.61	0.51	0.56	0.56	0.59	0.55	0.58	0.69	0.53	0.55
Al2O3	14.19	14.89	14.56	14.87	14.15	14.28	14.24	14.93	14.75	14.50	14.37	15.22	14.40	14.63	15.71	14.41	14.40
Fe2O3	4.61	5.44	5.50	5.44	5.30	6.61	5.84	5.46	5.97	5.76	5.65	3.72	0.40	0.31	0.40	5.17	4.82
MnO	0.11	0.16	0.03	0.04	0.06	0.15	0.05	0.01	0.03	0.02	0.08	0.00	0.00	0.01	0.01	0.03	0.04
MgO	0.68	2.37	3.98	4.17	3.79	4.76	3.65	0.17	1.90	2.82	1.58	0.28	0.23	0.24	0.29	2.23	2.31
CaO	2.65	2.14	3.27	3.04	2.92	1.21	2.34	0.69	3.45	2.94	2.11	2.17	3.40	3.27	3.37	2.67	2.52
Na2O	4.90	2.74	1.53	1.56	0.67	0.74	0.62	0.56	0.84	1.84	5.27	0.98	1.01	0.99	1.01	0.91	0.88
K2O	1.83	2.13	0.65	0.75	1.42	1.05	1.80	BD	2.53	0.57	0.22	0.71	1.16	1.39	1.42	2.04	2.08
P2O5	0.08	0.17	0.12	0.11	0.11	0.12	0.17	0.07	0.18	0.16	0.15	0.11	0.14	0.14	ND	0.10	0.08
Total (wt%):	98.75	101.08	97.89	98.07	96.27	99.28	96.20	97.47	100.67	98.17	99.10	95.61	96.46	97.31	100.10	100.27	99.37
LOI (wt%):	1.42	8.39	7.07	7.76	7.21	6.09	7.58	6.44	8.77	6.39	1.74	5.85	4.69	5.41	7.31	5.41	2.95
Trace element (ppm):
Zr	130	135	126	140	116	118	123	136	132	124	123	150	124	138	142	141	151
Y	35	35	36	30	32	33	37	25	40	35	38	39	22	23	22	35	38
Sr	247	260	278	279	208	87	141	113	263	289	255	204	218	226	236	234	235
Zn	73	64	64	39	51	207	40	76	87	20	47	BD	BD	8	BD	9	45
Cu	15	51	44	32	24	9	15	118	31	89	131	12	3	4	5	4	4
Ba	405	389	301	293	241	280	319	356	330	269	258	364	545	483	522	752	688
Whole-rock composition
Major element oxide (wt%):
SiO2	68.26	64.59	62.90	62.31	62.46	65.56	61.88	70.15	64.32	64.58	67.91	67.62	71.64	71.65	71.57	68.27	69.59
TiO2	0.44	0.47	0.53	0.49	0.50	0.51	0.50	0.57	0.47	0.52	0.55	0.56	0.52	0.55	0.64	0.50	0.53
Al2O3	13.99	13.64	13.53	13.72	13.13	13.41	13.16	13.97	13.46	13.58	14.12	14.33	13.72	13.84	14.56	13.63	13.98
Fe2O3	4.55	4.98	5.11	5.02	4.92	6.21	5.40	5.11	5.45	5.39	5.55	3.50	0.39	0.29	0.37	4.89	4.68
MnO	0.11	0.15	0.03	0.04	0.06	0.14	0.04	0.01	0.03	0.02	0.08	0.00	0.00	0.01	0.00	0.03	0.04
MgO	0.67	2.17	3.70	3.85	3.52	4.47	3.37	0.16	1.74	2.64	1.55	0.26	0.22	0.22	0.26	2.11	2.24
CaO	2.62	1.96	3.04	2.81	2.71	1.14	2.16	0.64	3.15	2.75	2.07	2.04	3.24	3.09	3.13	2.53	2.44
Na2O	4.83	2.51	1.42	1.44	0.62	0.69	0.57	0.52	0.77	1.73	5.18	0.93	0.96	0.94	0.93	0.86	0.85
K2O	1.81	1.95	0.61	0.69	1.32	0.99	1.67	BD	2.31	0.54	0.21	0.67	1.11	1.31	1.32	1.93	2.02
P2O5	0.08	0.16	0.11	0.10	0.10	0.12	0.16	0.06	0.16	0.15	0.15	0.10	0.13	0.14	0.00	0.10	0.07
Total S (%):	0.02	0.65	4.66	4.66	3.78	2.53	5.00	4.33	5.14	5.47	0.63	3.95	1.73	1.73	1.73	3.42	3.42
Total H2O+ (wt%):	1.21	7.93	4.75	4.75	5.09	5.42	4.90	3.63	3.34	3.49	1.54	3.08	2.53	2.53	2.53	3.24	3.24
Swater-soluble sulfate (wt%):	0.04	ND	5.15	ND	4.24	1.20	4.93	4.50	ND	5.68	0.14	0.92	2.08	ND	ND	3.42	ND

Core, section: 193-1188A-:	16R-2	16R-2	17R-1	17R-1	19R-1	20R-1	20R-1	21R-1	21R-1
Interval (cm):	12-15	40-43	90-93	90-93	73-76	74-77	92-95	20-24	20-24
Curated depth (mbsf):	136.98	137.26	146.00	146.00	165.03	174.64	174.82	183.82	183.30
Rock type:	BR	AD	AD	AD†	AD	AD	GD	GD	GD†
Alteration style:	GSC	GSC	Sil	Sil	Sil	GSC	Sil	Sil/GSC	Sil/GSC
Ignited rock powder composition*:
Major element oxide (wt%):
SiO2	61.67	67.19	73.25	72.04	67.55	52.34	70.05	60.53	61.77
TiO2	0.76	0.64	0.57	0.57	0.56	0.65	0.53	0.53	0.69
Al2O3	14.74	14.43	14.40	14.38	14.42	12.05	14.33	13.86	14.48
Fe2O3	9.14	5.79	4.97	4.64	4.90	13.71	5.46	8.77	9.69
MnO	0.13	0.09	0.04	0.05	0.06	0.07	0.03	0.06	0.07
MgO	4.19	2.39	2.61	2.68	1.21	4.68	1.23	5.36	6.38
CaO	4.35	4.13	1.13	1.10	2.65	2.31	2.52	2.89	3.07
Na2O	4.70	4.13	0.68	0.64	4.91	3.12	4.83	0.07	3.25
K2O	0.06	0.33	1.84	1.98	0.29	0.11	0.36	BD	BD
P2O5	0.36	0.19	0.12	0.09	0.11	0.39	0.09	0.31	0.30
Total (wt%):	100.09	99.29	99.60	98.19	96.65	89.43	99.43	92.39	99.71
LOI (wt%):	1.93	1.93	4.57	4.57	2.22	5.76	4.04	3.49	3.49
Trace element (ppm):
Zr	87	112	130	138	131	75	132	81	85
Y	28	31	41	46	38	20	39	26	27
Sr	434	406	117	124	327	265	320	269	307
Zn	158	94	30	23	31	15	9	73	71
Cu	47	22	13	8	303	95	386	7	14
Ba	177	494	713	637	372	97	337	93	112
Whole-rock composition
Major element oxide (wt%):
SiO2	60.48	65.90	69.90	68.75	66.05	49.33	67.22	58.42	59.62
TiO2	0.74	0.62	0.54	0.55	0.55	0.61	0.51	0.51	0.67
Al2O3	14.46	14.15	13.74	13.72	14.10	11.36	13.75	13.37	13.97
Fe2O3	8.97	5.67	4.75	4.43	4.79	12.92	5.24	8.46	9.36
MnO	0.12	0.09	0.04	0.05	0.06	0.06	0.02	0.06	0.07
MgO	4.11	2.34	2.49	2.56	1.18	4.41	1.18	5.18	6.16
CaO	4.26	4.05	1.08	1.05	2.59	2.17	2.42	2.79	2.97
Na2O	4.61	4.05	0.65	0.61	4.80	2.94	4.64	0.07	3.14
K2O	0.06	0.32	1.76	1.89	0.28	0.11	0.34	BD	BD
P2O5	0.35	0.19	0.11	0.09	0.10	0.37	0.08	0.30	0.29
Total S (%):	3.63	2.16	0.99	0.99	0.49	5.98	2.79	0.39	0.39
Total H2O+ (wt%):	0.87	0.68	3.36	3.36	1.44	2.33	2.17	2.18	2.18
Swater-soluble sulfate (wt%):	3.40	ND	1.09	ND	ND	6.03	2.82	0.43	ND

Notes: Upper portion of the table contains the oxide abundances in ignited powders, while the lower portion is the original rock compositions. The analyses of samples containing >1 wt% total S should be used as general compositional guides, and not as absolute values. * = samples ignited for 6 hr at 600°C followed by 4 hr at 1050°C; all other samples were roasted only for 1 hr at 1050°C; † = duplicate. Rock types: AD = altered dacite, BR = breccia, GD = green dacite, FD = fresh dacite. Alteration types: F = fresh, Bl = bleached, Sil = silicified, GSC = green silica-clay. BD = below detection, ND = not determined. Water, total sulfur, and loss on ignition (LOI) are reported in weight percent of the unignited powders for Hole 1188A.