Science / Geology / Aquiclude: A subsurface rock, soil or sediment unit that does not yield useful quanties of water.
Science / Geology / Artesian Well: A well that penetrates an aquiclude to reach an aquifer containing water under pressure. Thus water in the well rises above the surrounding water table. MORE
Science / Geology / Perched Groundwater: An isolated body of ground-water that is perched above and separated from the main water table by an aquiclude. MORE