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Swiss Journal of Geosciences
Fig. 7 | Swiss Journal of Geosciences

Fig. 7

From: Formation of phyllosilicates in a fault zone affecting deeply buried arkosic sandstones: their influence on petrophysic properties (Annot sandstones, French external Alps)

Fig. 7

Plot of permeability (K) versus total porosity (Nt). Permeability values are values from the three directions. Grey crosses non-altered host sandstone values (samples showing present day meteoric alteration are excluded); black crosses deformed samples values. The number of crosses is superior to the number of samples because for each sample, several cores have been made (see Table 2)

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