USA HISTORY

Detailed explanation-1: -An aquifer is a body of rock and/or sediment that holds groundwater. Groundwater is the word used to describe precipitation that has infiltrated the soil beyond the surface and collected in empty spaces underground. There are two general types of aquifers: confined and unconfined.

Detailed explanation-2: -The underground rock units in which the ground water occurs are called “aquifers". These aquifers are large and deep expanses of rock that lie below the land surface. Water collects within the cracks, fissures and open spaces of these rock units.

Detailed explanation-3: -An aquifer is a body of saturated rock through which water can easily move. Aquifers must be both permeable and porous and include such rock types as sandstone, conglomerate, fractured limestone and unconsolidated sand and gravel. Fractured volcanic rocks such as columnar basalts also make good aquifers.

Detailed explanation-4: -Major sand and gravel aquifers are generally Quaternary deposits found within pre-glacial bedrock valleys or along modern streams and rivers. They are commonly separated from shallower aquifers by layers of less permeable till or fine-grained lacustrine deposits.

Detailed explanation-5: -Read this article to learn about the following four types of aquifers, i.e., (1) Unconfined Aquifer, (2) Perched Aquifer, (3) Confined Aquifer, and (4) Leaky Aquifer or Semi-Confined Aquifer.