Exam 12: Groundwater

What methods are used to counteract saltwater incursion?

Briefly explain why the artesian-pressure surface slopes.

How are stalactites different from stalagmites? Why do they typically form in pairs and often merge to form a column?

Where do the pollutants go once they enter the groundwater reservoir?

Where does groundwater discharge naturally?

Discuss the artesian system that underlies South Dakota and extends to central Texas in the Dakota Sandstone.

How can limestone be dissolved by groundwater when it is almost insoluble in pure water? How does this happen?

The water stored in the open spaces within underground rocks and unconsolidated material is called ____________________.

An upward-growing projection of calcite created from water that drips from a cave's ceiling is called a(n)____________________.

Conditions needed for the development of karst topography include:

A local aquiclude within a larger aquifer results in a(n):

What is one of the beneficial results of movement of water within the ground?

A natural fountain that intermittently ejects hot water and steam into the air is a(n):

What is a cone of depression,where is it found,and what causes it? Why can large cones of depression be a serious problem?

An example of a rock type that could be a good aquifer is:

Briefly explain how some limestone and other carbonate rocks can have high porosity and permeability.

In what ways are geysers and undersea hydrothermal vent sites similar?

What are the most common sources of groundwater contamination?

Describe dripstone and how it forms.

An impermeable layer that prevents the passage of groundwater is a(n)____________________.