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Swiss Journal of Geosciences
Fig. 8 | Swiss Journal of Geosciences

Fig. 8

From: Geochemical signature of paleofluids in microstructures from Main Fault in the Opalinus Clay of the Mont Terri rock laboratory, Switzerland

Fig. 8

Correlations between the Al and Si, and between the K and Na contents of the infillings from varied microtectonic structures. In the upper diagram, the full line outlines the Si–Al correlation for all infillings except those of the gouges, while the lower dashed line outlines the Si/Al ratio of potential illite authigenesis. In the lower K vs. Na diagram, the data points of the gouge infillings plot all outside the line including the data of the other infillings (from Techer et al. 2017)

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