Fluid Dynamics in a Thrust Fault Inferred from Petrology and Geochemistry of Calcite Veins: An Example from the Southern Pyrenees

Table 2

Elemental composition (Ca, Mg, Fe, Mn, and Sr) of the different calcite cements (Cc1 to Cc4), the interparticle cement Cc0 in the footwall host rocks (FW), and the hanging wall rocks (HW). The calculated Mg/Ca and Sr/Ca molar ratios of the parent fluid using the distribution coefficient equation [57] are also shown.

Sample	Ca (ppm)	Mg (ppm)	Fe (ppm)	Mn (ppm)	Sr (ppm)	Mg/Ca low T	Mg/Ca high T	Sr/Ca low T	Sr/Ca high T
Cc1	37236	859.7	2518.8	236.8	239	0.317	0.033	0.0049	0.0037
Cc2	378096	921.1	1249.4	222.3	216.2	0.335	0.035	0.0044	0.0033
Cc2	385024	741.0	1188.8	151.5	219.5	0.264	0.027	0.0043	0.0033
Cc2	393269	865.9	564.1	86.6	270.7	0.303	0.031	0.0052	0.0039
Cc3	387653	1912.4	2967.2	380.5	906.8	0.678	0.070	0.0178	0.0134
Cc3	300362	1997.7	2704.6	409.3	548.1	0.914	0.094	0.0139	0.0104
Cc3	350768	1397.6	2997.7	661.1	356.1	0.548	0.056	0.0077	0.0058
Cc4	322604	3637.8	2345.2	97.3	699.5	1.550	0.160	0.0165	0.0124
Cc4	366243	1908.1	1658.3	80.3	623.6	0.716	0.074	0.0130	0.0097
Cc4	346495	1784.2	1298.2	65.2	625.3	0.708	0.073	0.0138	0.0103
FW	298763	3376.3	3248.8	345.6	340.8	1.553	0.160	0.0087	0.0065
HW	321638	2968.0	980.1	68.8	468.9	1.268	0.131	0.0111	0.0083