Fluid flow through the sedimentary cover in northern Switzerland recorded by calcite–celestite veins (Oftringen borehole, Olten)

Swiss Journal of Geosciences

Table 3 Carbon, oxygen, sulphur and strontium isotope compositions of vein minerals

Sample	Depth (m)	Formation	Vein material	Sr (ppm)	⁸⁷Sr/⁸⁶Sr	Error 2σ (abs.)	δ¹³C ‰ V-PDB	Error 1σ (abs.)	δ¹⁸O ‰ V-SMOW	Error 1σ (abs.)	δ³⁴S ‰ CDT	Error 1σ (abs.)
OFT-30	409.42	Geissberg Member	Calcite	187	0.708377	0.000020	−1.39	0.06	22.57	0.06
OFT-32	415.72	Geissberg Member	Calcite	209	0.708654	0.000044	−0.84	0.06	21.26	0.06
OFT-33	427.10	Effingen Member	Calcite	551	0.708046	0.000022	1.37	0.06	23.43	0.06
OFT-34	443.78	Effingen Member	Calcite	243	0.707566	0.000026	1.74	0.06	17.49	0.06
OFT-36	496.82	Effingen Member	Calcite partially replacing celestite	7,103	0.707007	0.000020	2.60	0.06	19.69	0.06
OFT-36	496.82	Effingen Member	Pyrite (associated with calcite)	7,103	0.707007	0.000020	2.60	0.06	19.69	0.06	−54.8	1.3
OFT-38	569.33	Effingen Member	Celestite						16.31	0.52	26.0	0.5
			Celestite	477,124^a	0.707373	0.000025			17.21	0.14	25.1	0.5
			Calcite	842	0.707344	0.000020	2.40	0.06	20.96	0.06
OFT-39	586.73	Effingen Member	Celestite (+calcite)	477,124^a	0.707396	0.000020	1.90	0.06	14.20	0.34	23.2	0.3
			Pyrite								−34.9	0.2
			Celestite						13.19	0.39	22.8	0.1
			Calcite						21.81	0.06
OFT-40	607.59	Effingen Member	Celestite	477,124^a	0.707099	0.000022			15.20	0.40	22.5	0.3
			Celestite						17.55	0.69	22.8	0.5
			Calcite	1,799	0.707085	0.000020	3.05	0.06	24.28	0.06
			Calcite microcrystalline	957	0.707146	0.000020	2.91	0.06	23.96	0.06
			Calcite microcrystalline				2.95	0.06	24.19	0.06
OFT-44	708.18	Lower Hauptrogenstein	Calcite	388	0.707499	0.000020	2.00	0.06	21.26	0.06