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

Swiss Journal of Geosciences

Table 2 Strontium, carbon and oxygen isotope composition of whole-rock carbonate

Sample	Depth (m)	Formation	Lithology^a	Sr (ppm)	⁸⁷Sr/⁸⁶Sr	Error 2σ (abs.)	δ¹³C ‰ V-PDB	Error 1σ (abs.)	δ¹⁸O ‰ V-SMOW	Error 1σ (abs.)
OFT-7	393.13	Crenularis Member	Limestone	206	0.707888	0.000020	−0.49	0.05	25.33	0.05
OFT-8	399.59	Crenularis Member	Argillaceous limestone	194	0.708103	0.000032	1.11	0.04	26.86	0.02
OFT-30	409.42	Geissberg Member	Limestone	147	0.707719	0.000029	−1.99	0.06	25.66	0.06
OFT-10	425.06	Effingen Member	Limestone	220	0.707307	0.000020	1.95	0.06	26.60	0.06
OFT-11	438.88	Effingen Member	Argillaceous limestone	534	0.707116	0.000020	1.99	0.06	26.75	0.06
OFT-15	462.59	Effingen Member	Sandy calcareous marl	744	0.707188	0.000020	2.14	0.06	26.71	0.06
OFT-19	492.65	Effingen Member	Argillaceous limestone	767	0.707049	0.000020	2.56	0.06	26.64	0.06
OFT-22	544.53	Effingen Member	Argillaceous limestone	742	0.706923	0.000020	2.81	0.06	27.16	0.06
OFT-24	571.37	Effingen Member	Calcareous marl	892	0.707033	0.000020	2.89	0.06	27.38	0.06
OFT-26	619.07	Effingen Member	Sandy calcareous marl	1,035	0.707140	0.000020	2.72	0.06	25.93	0.06
OFT-29	648.11	Birmenst. Member	Sandy calcareous marl	601	0.707141	0.000020	2.62	0.06	28.29	0.06
OFT-44	708.18	Lower Hauptrogenstein	Oolitic limestone	383	0.707255	0.000020	2.14	0.06	25.23	0.06

^aUsing the classification scheme of Füchtbauer (1988), based on the relative contents of quartz + feldspar, carbonates, and clay minerals