Geofluids Assessment of the Ayub and Shafa Hot Springs in Kopet-Dagh Zone (NE Iran): An Isotopic Geochemistry Approach

Table 1

Field parameters, major anion and cation compositions, and isotopic compositions of AP and SH hot spring and adjacent springs.

Sample ID	Field parameter						Cations (mgL^−1)				Anions (mgL^−1)				Isotope ( VSMOW)
	TDS (mgL^−1)	EC (ms/cm)	PH	T (°C)	DO (% sat)	Eh (mv)	Ca^+2	Mg^+	Na^+	K^+				Cl^−	δ^2H	δ^18O
Sp. 1	247	499	8.0	25.0	—	82	104	33	67	3.1	16.0	184	130	8	−62.6	−9.0
Sp. 2	443	953	8.1	18.0	—	112	147	49	109	3.7	0.0	284	336	35	−61.8	−8.5
Sp. 3	307	626	7.6	16.9	146	141	110	28	84	3.6	24.0	150	234	46	−58.8	−8.3
Sp. 4	372	782	7.1	14.0	—	173	70	250	3	0.0	28.0	176	36	6	−66.2	−9.4
Sp. 5	146	334	7.7	16.9	—	195	89	41	94	3.4	64.0	110	343	49	−70.5	−9.9
Sp. 6	218	444	7.7	12.1	204	184	60	48	34	1.8	80.0	160	85	9	−65.6	−9.3
Sp. 7	296	604	7.5	17.2	137	173	71	52	59	3.4	60.0	170	172	21	−66.4	−9.1
Sp. 8	550	1120	7.5	38.0	65	−22	87	42	96	3.2	16.0	184	349	43	−73.0	−9.9
Sp. 9	770	1559	7.1	21.0	55	104	188	84	170	29.6	8.0	286	707	166	−71.8	−9.9
Sp. 10	469	957	7.3	36.0	19	−72	67	40	75	2.1	4.0	190	263	37	−73.1	−10.2
Sp. 11	454	930	8.3	16.0	—	58	280	346	9	17.4	56.0	256	423	52	—	—
Sp. 12	404	825	8.1	25.0	—	131	81	52	99	2.7	24.0	196	392	38	−65.3	−8.8
Sp. 13	780	1591	7.6	22.3	89	196	312	552	228	4.0	21.7	10	695	127	—	—
Sp. 14	615	1256	7.3	16.4	45	112	230	440	224	0.0	21.7	10	366	32	—	—
R. 1	285	581	8.4	22.7	134	150	53	43	52	1.4	72.0	110	142	31	−72.1	−10.1
R. 2	251	511	8.3	26.4	129	134	172	130	128	64.0	26.1	5	145	42	—	—
R. 3	966	1971	8.1	27.0	97	166	318	542	164	16.0	4.3	11	880	75	—	—
R. 4	1280	2612	8.0	29.9	107	135	30	750	202	26.1	26.1	13	980	131	—	—
R. 5	840	1714	8.3	25.5	159	129	360	360	184	21.7	4.3	11	640	99	—	—
W. 1	349	713	7.4	16.4	—	101	190	330	244	8.7	26.1	6	280	44	—	—
W. 2	462	978	7.1	18.6	92	101	200	190	240	13.0	21.7	8	445	48	—	—