Vertical anisotropy of permeability in crystalline aquifers

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Role of horizontal fractures for increasing horizontal permeability of crystalline rocks

In fractured crystalline aquifers, the horizontal permeability is higher than the vertical one. These results agree with the geological observations, the fissured layer showing the existence of many sub-horizontal fractures.

Publications

Vertical anisotropy of hydraulic conductivity in the fissured layer of hard-rock aquifers due to the geological patterns of weathering profiles

J C Marechal, R Wyns, P Lachassagne, K Subrahmanyam

JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, vol. 63, 2004, pp. 545--550

Use of hydraulic tests at different scales to characterize fracture network properties in the weathered-fractured layer of a hard rock aquifer

J C Marechal, B Dewandel, K Subrahmanyam

Water Resources Research, vol. 40, 2004 Nov

Vertical anisotropy of hydraulic conductivity in fissured layer of hard-rock aquifers due to the geological structure of weathering profiles

J C Marechal, R Wyns, P Lachassagne, K Subrahmanyam, F Touchard

Comptes Rendus Geoscience, vol. 335, 2003, pp. 451--460