The Amazon river catchment erodes the Andes and transport large volumes of sediments which are deposited on the Atlantic ocean floor. The sediments decrease friction when they subduct under the Caribbean plate causing a general uplift of the accretionary prism due to low-angle subduction

Barbados is in the back-arc of the West Indies volcanic arc and is above sea-level because of compression generated by ocean-ocean subduction

Barbados is in the fore-arc of the West Indies volcanic arc and is above sea-level because of extension generated by ocean-ocean subduction

The Amazon river catchment erodes the Andes and transport large volumes of sediments which are deposited on the Atlantic ocean floor. These sediments are scraped off when the Atlantic ocean floor subducts under the Caribbean plate forming an unusually thick accretionary prism that forms the island

Barbados is one of the volcanic islands of the West Indies arc and is above sea-level because of volcanism generated by ocean-ocean subduction