Manifestaciones hidrológicas e hidroquímicas de flujos subterráneos procedentes de formaciones poco permeables del terciario en el Somontano de Huesca

Abstract

Presence of groundwater flow in the «somontano Oscense» area, proceeding from low permeability detritic tertiary rocks, is considered. It's given a grounwater flow model for these tertiary rocks. This model explains both water flow through them and water chemical characteristics. Groundwater flow has clear surface manifestations: it causes wet-areas (which are called «paules» in the area) with sodic waters; it makes appear saline, sodic or alkaline soils; and it modifies, too, water chemical composition of rivers in Somontano.