"Generational divide" refers to the differences, gaps, or conflicts that can exist between different age groups, particularly when it comes to attitudes, beliefs, values, and behaviors. Full definition
It is one more pending generational divide between boomers and pretty much every generation that followed them. (relentlesseconomics.com)
While worship issues often divide churches along generational lines, many congregations are finding ways for computer technology to bridge generational divides. (religion-online.org)
I was assuming you were at least ten years older because whenever the converstaion comes up about Brokeback and Crash with friends of mine there always seemed to be this sort of generational divide between the two. (incontention.com)