Question

why groundwater evolve?​

Answer 1

Major-Ion Evolution Sequence. As groundwater moves along its flow paths in the saturated zone, increases of total dissolved solids and most of the major ions normally occur. ... Water in this zone has as the dominant anion and is low in total dissolved solids.

Water-table depth: 10–100 m

Aquifer type and age: Beds of dolomite and limestone between shale and sandstone

Aquifer thickness: Very variable

Climate and annual precipitation: Humid continental, 990 mm