Create a new website from an existing one

Hi,
 
I am using Jahia 4.0.5 with an Oracle database. I have developed a site and
now, I need to split it in two different sites.
 
I would like to know if I can duplicate my site and delete from each one of
both, the pages I don't need, and, at the end, keep in each site only the
information that is necessary for it.
 
Does anyone know how could I make this? Is it possible to find an easier
solution?
 
Thank you in advance for your helping and sorry for my english.
 
Alex.