Author Question: Define ground water. Where is the ground water stored? What will be an ideal ... (Read 71 times)

jparksx · **on:** Jul 16, 2018

Define ground water. Where is the ground water stored?

What will be an ideal response?

Question 2

How do porosity and permeability change with depth below the surface? Which Earth materials have the highest porosity and permeability? The lowest?

What will be an ideal response?

xoxo123 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

Ground water is the subterranean water stored in open spaces between particles, or pores. Some is stored in fractures.

Answer to Question 2

Porosity and permeability tend to increase with depth into the Earth, as compaction reduces pore space and cements fill space. Crystalline rocks don't have pore spacethey are fractured, and fracturing is most common in the upper crust. Limestone and sandstone and unconsolidated sediments have high porosity; shale has low porosity.