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

Figure 7

Fault core images. (a) Hand sample photograph of the foliated cataclasite showing S-C shear lenses (lithons) of grey host rock micritic limestone and calcite, bounded by dissolution seams or stylolites. Detail of the calcite cement can be found in Figure 8(d). (b, c) Optical microphotographs of the foliated cataclasite matrix with the presence of reddish clay minerals concentrated along pressure solution surfaces (yellow arrow).

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