Argillaceous formations generally act as aquitards because of their low hydraulic
conductivities. This property, together with the large retention capacity of clays for cationic …

Assessing the vulnerability of groundwater to adverse effects of human impacts is one of the
most important problems in applied hydrogeology. At the same time, many of the …

Inorganic arsenic species were measured in the porewaters collected from eighteen
piezometers installed between 3 and 91.4 m below ground in a thick till and clay-rich …

Groundwater interacts with porewater within clay-rich sequences. However, the effects of
aquitard porewater on groundwater quality are generally poorly understood. This study …

Vertical profiles of tetrachloroethene (or perchloroethylene, PCE) and trichloroethene (TCE)
were used to validate a diffusion process in a natural aquitard at Dover Air Force Base …

Shallow clay-rich aquitards limit groundwater recharge to underlying aquifers, but they also
protect the aquifers from contamination. The bulk hydraulic conductivity of such shallow …

Arsenic-enriched groundwater has been a pressing human health issue for more than a
decade, with tens of millions of people worldwide being at risk of chronic As poisoning …

Rare earth elements (REE) were determined in groundwater samples collected from a thick
till and clay-rich aquitard sequence located in southern Saskatchewan, Canada. The …

Transport and geochemical processes controlling the chemical and isotopic composition of
pore waters in the upper 45 m of a thick, surficial, clay‐rich till (Battleford Formation) were …

In the northern prairie region of North America, numerous seasonal wetlands and
ephemeral ponds form as snowmelt water is trapped in small topographical depressions. A …