A study carried out by Samuel Panno of the Illinois State Geological Survey and his colleagues has revealed that nearby caves store the dates of past earthquakes in stone.

Geological surveys show America has enough saline rock formations to store three trillion tons of carbon dioxide-enough for the next 500 years at the country's current output from human activities.

This paper studies the characteristics of geological structure, the relation of reservoir structure and capacity of store through theoretical analysis of structure stress.