- Artesian (Aquifer or Well) : An Artesian (Aquifer or Well) is Water held under pressure in porous rock or soil confined by impermeable geological formations.

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Confined Aquifer ■■■■■■
A Confined Aquifer is an Aquifer in which Ground Water is confined under pressure which is significantly . . . Read More
Artesian water ■■■■■
Artesian water: An artesian water is Ground Water that is under pressure when tapped by a well and is . . . Read More
Confining layer ■■■■
Confining layer is the Layer of rock that keeps the Ground Water in the Aquifer below it under pressure. . . . Read More
Aquifer ■■■■
An Aquifer is an underground geological formation, or group of formations, containing water. They are . . . Read More
Porosity ■■■■
The Porosity is the ability of rock material to store water. So it is a measure of the water-bearing . . . Read More
Unconfined aquifer ■■■
Unconfined aquifer: An unconfined aquifer is an Aquifer whose upper water surface (water table) is at . . . Read More
Permeability ■■■
A Permeability is the degree to which groundwater can move freely through an Aquifer measured by the . . . Read More
Groundwater ■■■
A groundwater is water below the earth's surface; the source of water for wells and springs. -- Other . . . Read More
Fossil at top500.de■■■
Fossils (from Classical Latin fossilis, literally "obtained by digging") are the preserved remains or . . . Read More
Coal at top500.de■■■
Coal refers to a combustible black or brownish-black sedimentary rock composed mostly of carbon and hydrocarbons; . . . Read More