Whats another word for acdians that has 6 letters

The Acadians ... who came from the French-speaking Acadiana region in
Canada, navigated all the way down the east coast of the US, around Florida,
and then for some mysterious and eternally inexplicable reason decided to settle
on the Gulf Coast of Louisiana, generally between Nawlins and Lak Charlie ...
soon became addressed by the locals there as " Cajuns ".

Answerwill have thinner; have thicker oceanic sediments;