Equivalent chronostratigraphic units

Posted by Rashed 03 Nov 2000 08:35:37

Dear Sir
could you please explain to me what are the equivalent chronostratigraphic units in the midwestern USA. Thank

• chrono stratigraphic hasan khanyani 17/4/2003 (0)
• chrono stratigraphic hasan khanyani 17/4/2003 (0)