The phrase "a long continuum of" is correct and usable in written English.
It can be used to describe an extensive range or series of related elements or events that are connected in some way.
Example: "The research highlights a long continuum of social behaviors that have evolved over centuries."
Alternatives: "an extensive range of" or "a broad spectrum of".
Such mistreatment, we discover, is part of a long continuum of resentment and rejection.
With nuance and lucidity, he situates Dylan in a long continuum of American music, literature, religion and politics.
The rise of the Vikings was not a sudden event, but part of a long continuum of human development in the harsh conditions of northern Scandinavia.
With nuance and lucidity, an old Dylan hand situates his subject in a long continuum of American music, literature, religion and politics.
A long continuum of movement, the event can be an enjoyably spontaneous, informal way of looking at Mr. Cunningham's dance and the world of the moment in which it happens.
For Chavistas, history is a long continuum featuring the massacres of the Spanish conquest, colonial slavery and the economic and political inequities of Venezuela's dictatorial and corrupt democratic governments in the 20th century.
Past and present editors of Bookbird seem to serve in a long continuum.
Obama, conversely, saw America on a long continuum wherein we became stronger and better as we gradually live up to the equality and opportunity promises of our Constitution.
There's going to be need for support on the long term, a continuum of care".
Nature produces bodies on a spectrum; a continuum of possibilities.
Given the possibility of poor developmental outcomes in IS, including the emergence of other seizure disorders and cognitive and developmental problems [ 7, 53], the establishment of a long-term multidisciplinary continuum of care for children with IS is important.
