Table T12. Interstitial water geochemical data, Hole 1236A.

Table T12. Interstitial water geochemical data, Hole 1236A.


Core, section, interval (cm)	Depth		pH	Alkalinity (mM)	Salinity	Cl^- (mM)	Na⁺(mM)	SO₄^2- (mM)	HPO₄^2- (µM)	NH₄⁺ (µM)	H₄SiO₄ (µM)	Mn²⁺ (µM)	Fe²⁺ (µM)	Ca²⁺ (mM)	Mg²⁺ (mM)	B (µM)	Sr²⁺ (µM)	Ba²⁺(µM)	Li⁺ (µM)	K⁺ (mM)
Core, section, interval (cm)	(mbsf)	(mcd)	pH	Alkalinity (mM)	Salinity	Cl^- (mM)	Na⁺(mM)	SO₄^2- (mM)	HPO₄^2- (µM)	NH₄⁺ (µM)	H₄SiO₄ (µM)	Mn²⁺ (µM)	Fe²⁺ (µM)	Ca²⁺ (mM)	Mg²⁺ (mM)	B (µM)	Sr²⁺ (µM)	Ba²⁺(µM)	Li⁺ (µM)	K⁺ (mM)
202-1236A-
1H-2, 140-150	2.90	2.93	7.39	2.57	34.0	553	473	26.0	2.0	BDL	210	2.3	BDL	11.0	51.3	433	103	0.6	25	10.2
2H-3, 145-150	9.07	10.88	7.35	2.46	34.0	560	483	27.2	0.9	3.2	350	0.5	BDL	12.2	49.5	425	125	0.7	25	10.1
3H-3, 145-150	18.39	20.30	7.04	2.20	34.0	561	481	26.3	1.3	BDL	389	BDL	0.6	12.1	50.3	423	126	0.4	25	9.9
4H-3, 145-150	28.09	32.21	7.50	2.35	34.0	564	479	27.0	0.7	2.8	414	0.6	BDL	12.9	52.6	397	112	0.5	25	10.2
5H-3, 140-150	37.45	43.64	7.47	2.24	34.0	570	492	26.7	0.9	3.3	429	1.0	BDL	12.1	49.8	410	106	0.3	24	9.8
6H-3, 140-150	47.02	54.20	7.42	2.29	35.0	563	480	26.6	0.8	BDL	449	1.3	BDL	12.3	51.9	399	102	0.3	26	10.0
7H-3, 140-150	56.53	64.10	7.36	2.61	35.0	564	481	27.0	0.7	2.6	455	1.9	BDL	12.4	52.6	397	97	0.3	26	10.1
8H-3, 122-132	65.84	77.32	7.39	2.17	35.0	562	479	26.6	0.7	BDL	480	3.8	BDL	12.1	52.2	399	95	0.3	27	10.2
9H-3, 140-150	75.52	86.05	7.36	2.34	36.0	563	484	28.0	0.7	BDL	492	2.2	BDL	11.8	51.9	392	93	0.7	26	10.0
10H-3, 140-150	85.01	99.09	7.43	2.46	35.0	561	483	27.9	2.0	BDL	387	1.9	BDL	11.6	51.3	397	90	0.3	25	10.0
11H-3, 140-150	94.52	107.45	7.39	2.23	35.0	560	485	27.7	0.6	BDL	266	2.0	BDL	11.5	49.7	404	93	0.3	27	9.8
12H-3, 140-150	104.02	117.88	7.53	2.26	34.0	566	486	26.7	0.5	BDL	218	1.7	BDL	11.5	51.2	400	91	0.3	26	10.1
13H-3, 140-150	113.52	127.89	7.46	2.29	35.0	563	476	26.1	0.6	BDL	206	1.3	BDL	12.0	53.7	382	91	0.3	26	10.2
14H-3, 140-150	123.03	137.40	7.51	2.28	36.0	565	483	26.5	0.7	BDL	200	BDL	BDL	11.8	51.8	391	92	BDL	26	10.2
15H-3, 140-150	132.52	147.07	7.53	2.27	36.0	564	481	26.9	0.6	BDL	198	BDL	0.3	11.9	52.7	386	90	0.3	27	10.1
17H-3, 145-150	146.07	160.90	7.56	2.33	36.0	568	483	27.4	1.0	5.4	204	BDL	BDL	11.6	51.9	386	91	0.3	26	10.3
18H-3, 140-150	155.52	170.35	7.61	2.29	36.0	573	487	26.0	1.3	4.7	262	BDL	BDL	11.4	51.4	377	88	0.2	25	11.0
19H-3, 140-150	165.02	179.85	7.58	2.28	36.0	564	475	24.3	0.7	4.4	196	BDL	BDL	11.8	52.9	384	89	BDL	26	10.2
21X-2, 140-150	176.01	191.13	7.64	2.57	36.0	565	476	23.6	0.7	4.7	352	2.2	0.4	14.0	50.0	377	91	0.3	27	10.9
22X-3, 140-150	187.21	202.33	7.64	2.09	36.0	565	483	27.0	2.0	BDL	645	7.1	BDL	13.5	50.3	381	98	0.3	28	10.4
23X-3, 140-150	196.92	212.04	7.63	1.40	36.0	566	481	26.8	0.7	7.7	455	8.9	BDL	14.6	50.1	385	105	0.3	28	11.0
24X-2, 140-150	205.11	220.23	7.91	1.14	36.0	568	487	26.7	1.6	3.0	231	6.5	BDL	14.2	48.2	284	98	0.4	27	10.9

Notes: BDL = below detection limit (NH₄⁺ = 2.2 µM, Mn²⁺ = 0.1 µM, Fe²⁺ = 0.3 µM, Ba²⁺ = 0.2 µM).