GEOLOGY

Detailed explanation-1: -If such a confined aquifer is tapped by a well, water will rise above the top of the aquifer and may even flow from the well onto the land surface. Water confined in this way is said to be under artesian pressure, and the aquifer is called an artesian aquifer.

Detailed explanation-2: -An aquifer is a geologic layer of permeable and porous rock such as sandstone or limestone and that provides the water source for the artesian well. The aquifer absorbs and stores water and in an artesian well the porous stone is sandwiched between a top and bottom layer of impermeable rock such as shale or clay.

Detailed explanation-3: -Artesian aquifers contain water under pressure. Explain why. Because the area of recharge is at a higher elevation than the rest of the aquifer. THINKING CRITICALLY-What can you do to conserve and protect groundwater so that there will be safe and abundant water supplies in the future?

Detailed explanation-4: -An artesian aquifer is an underground layer which holds groundwater under pressure. This causes the water level in the well to rise to a point where the pressure is equal to the weight of water putting it under pressure. This type of well is called an artesian well.

Detailed explanation-5: -artesian well, well from which water flows under natural pressure without pumping. It is dug or drilled wherever a gently dipping, permeable rock layer (such as sandstone) receives water along its outcrop at a level higher than the level of the surface of the ground at the well site.