Formation of elements heavier than iron

[nouveau_riche]

I know that in the process of fusion in Stars, the hydrogen fuses into helium and so on until Iron is formed. The fusion stops after the formation of Iron and the graviatational force wins to take over the star evolution.

Then how do we account for the elements which are havier than Iron?

 

[DrDu]

They are mainly formed in supernovae when high flux densities of neutrons are produced in the formation of neutron stars and are absorbed by atomic nuclei.
See e.g.:

http://www.ukessays.com/essays/chemistry/the-genesis-of-elements.php