Groundwater tectonically-induced

Plate-tectonic processes control the evolution of sedimentary basins and consequently influence the evolution of groundwater flow within the basins. In this section tectonically-induced flow of groundwater is restricted to groimdwater flow which is related directly to tectonic activity. 

The type of sedimentary basin and its history of subsidence, heat flow and deformation are the main factors that determine the present-day hydrodynamic conditions in a basin. In the qualitative approach, the identification of the hydrodynamic conditions in present-day stable subaerial basins is restricted to the identification of the gravity-induced groundwater flow conditions. The identification of hydrodynamic conditions in sedimentary basins which are in whole or in part below sea level, should be based on the presupposition that both subsidence of and sedimentation in the basin as well as gravity-induced flow from continental areas surrounding the subaquatic part of the basin may have induced the present-day hydrodynamic conditions. In addition the potential influence of recent tectonic and/or magmatic activity should be taken into account. 

Hydrodynamic conditions in a basin may in part result from tectonic forces. Ge and Garven (1989) applied a numerical model of coupled tectonic- and gravity-induced flow to evaluate the relative importance of tectonic influence on groundwater pressure and flow in an otherwise gravity-induced flow system in a hypothetical foreland basin. Forbes et al. (1992) included an evaluation of lateral compression in their numerical reconstruction of the present-day pressure distribution in the Venture Field, Eastern Canada. 

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