vicariance

Etymology
From.

Noun

 * 1)  The separation of a group of organisms by a geographic barrier, resulting in differentiation of the original group into new varieties or species.
 * 2)  The geological event which produces such a barrier (volcano, earthquake, etc)
 * 3)  The act of experiencing an event by proxy through an empathic link with the person who is experiencing the event firsthand.
 * 1)  The act of experiencing an event by proxy through an empathic link with the person who is experiencing the event firsthand.

Related terms

 * vicariated