The Sensitivity of Temperature to Tachyhydrite Formation: Evidence from Evaporation Experiments of Simulated Brines Based on Compositions of Fluid Inclusions in Halite

Table 2

Major-ion chemical composition and Jänecke coordinates of individual primary fluid inclusions in halite from the Khorat Plateau.

Sample	Inclusion type	Mg	K	Ca	Na	Cl	2KCl	CaCl2	MgCl2
		mmol/kg H2O					Jänecke coordinates
Albian-Cenomanian: Sakon Nakhon Basin, Laos, Maha Sarakham Formation [14]
353 m	Chevron	930	350	340	3710	6590	12.11	23.53	64.36
353 m	Chevron	860	390	290	3890	6570	14.50	21.56	63.94
353 m	Chevron	780	400	370	3890	6590	14.82	27.41	57.78
353 m	Chevron	1180	420	390	3210	6760	11.80	21.91	66.29
353 m	Chevron	620	320	320	4270	6480	14.55	29.09	56.36
353 m	Chevron	690	310	330	4210	6650	13.19	28.09	58.72
353 m	Chevron	740	360	350	4000	6550	14.17	27.56	58.27
353 m	Chevron	800	380	340	3920	6570	14.29	25.56	60.15
353 m	Chevron	640	330	300	4270	6480	14.93	27.15	57.92
353 m	Chevron	740	320	310	4080	6510	13.22	25.62	61.16
381 m	Chevron	850	250	270	3990	6480	10.04	21.69	68.27
381 m	Chevron	570	250	290	4450	6410	12.69	29.44	57.87
381 m	Chevron	850	260	280	3980	6490	10.32	22.22	67.46
381 m	Chevron	610	210	280	4420	6400	10.55	28.14	61.31
381 m	Chevron	550	190	290	4510	6370	10.16	31.02	58.82
383.5 m	Chevron	620	270	330	4280	6450	12.44	30.42	57.14
383.5 m	Chevron	780	260	240	4160	6450	11.30	20.87	67.83
383.5 m	Chevron	570	230	280	4470	6400	11.92	29.02	59.07
425 m	Chevron	1190	230	250	3430	6540	7.40	16.08	76.53
425 m	Chevron	1150	220	280	3460	6550	7.14	18.18	74.67
426.5 m	Chevron	720	240	280	4200	6450	10.71	25.00	64.29
426.5 m	Chevron	680	290	300	4220	6460	12.89	26.67	60.44
428 m	Chevron	710	240	250	4250	6410	11.11	23.15	65.74
428 m	Chevron	880	200	250	4000	6460	8.13	20.33	71.54
428 m	Chevron	700	200	220	4340	6390	9.80	21.57	68.63
428 m	Chevron	740	190	240	4270	6410	8.84	22.33	68.84
430.5 m	Chevron	470	240	240	4710	6360	14.46	28.92	56.63
430.5 m	Chevron	1070	220	300	3570	6530	7.43	20.27	72.30
430.5 m	Chevron	1040	230	360	3540	6570	7.59	23.76	68.65
430.5 m	Chevron	800	200	360	3960	6480	7.94	28.57	63.49
430.5 m	Chevron	1110	250	360	3420	6620	7.84	22.57	69.59
430.5 m	Chevron	560	230	290	4480	6400	11.92	30.05	58.03
430.5 m	Chevron	580	220	240	4510	6380	11.83	25.81	62.36
430.5 m	Chevron	560	230	220	4590	6370	12.85	24.58	62.57
430.5 m	Chevron	620	210	280	4380	6390	10.45	27.86	61.69
430.5 m	Chevron	1060	220	260	3660	6520	7.69	18.18	74.13
430.5 m	Chevron	690	270	240	4320	6440	12.68	22.54	64.79
430.5 m	Chevron	820	210	290	4030	6460	8.64	23.87	67.49
430.5 m	Chevron	830	240	270	4030	6470	9.84	22.13	68.03
Average		778	264	292	4079	6484	11.13	24.69	64.18