Fossil Formation Waters Range in Age from Tens of Thousands to Hundreds of Millions of Years

The age of connate water is the age of confinement, i.e., the age of the directly overlying rock. Thus the resolution by which the confinement age can be determined is a function of the stratigraphic resolution of the respective rocks. The stratigraphic column is well preserved and continuous in many of the basins of the world that host connate waters, and in these cases the confinement age of the connate waters is compatible with the age of the host rocks.