2020年11月1日 · There were eight boreholes with various thicknesses of clay aquitard (from 13.8 to 25.2 m) that were chosen to examine iron distributions in pore water of the aquitards and …

2019年11月15日 · An aquiclude may be defined as a geological formation of relatively impermeable material which permits storage of water but it is not capable of transmitting water …

Aquifers are underground layers of very porous water-bearing soil or sand. Aquitards, by contrast, are compacted layers of clay, silt or rock that retard water flow underground; that is, they act …

2023年9月26日 · The type of material with the greatest geometric mean of specific storage is silty clay, which is also the most common aquitard material, reaching 6.56 × 10 –3 m –1. The rock …

2020年11月1日 · Through the easily measurable moisture content and plastic limit, we discuss the dynamic characteristics of solute mobilization during clay compaction and the interactions …

In general, gravel, sandy materials, limestone, or highly fractured rocks make good aquifers, whereas clay-rich, poorly sorted sediments, and unfractured rocks often form aquitards. The …

2005年2月18日 · The origin and long-term transport of dissolved organic carbon (DOC) and its high molecular weight (HMW) and low molecular weight (LMW) fractions were investigated in …

2010年9月17日 · The aquitard system consisted of 80 m of plastic clay-rich Battleford till discomformably overlying 77 m of Late Cretaceous plastic marine clay. Individual tracers …

The aims of this study were to delineate the spatial distribution of iron in a shallow aquitard-aquifer system within Jianghan Plain (JHP) of central China and to identify the origin of high iron withi …

Sandy clay is a perfect example of an aquitard. Here, the clay particles block the voids present in the sand and make it partly permeable. 3. Aquiclude. An aquiclude is a geological formation …