The Rocky Mountains were growing rapidly at this time, and as they were eroded they contributed a load of sediment that was deposited into the Gulf of Mexico.
(The Rocky Mountains; were growing; rapidly; T:at this time) (they; were eroded; ) (they; contributed; a load of sediment that was deposited into the Gulf of Mexico; T:as they were eroded) (a load of sediment; was deposited; into the Gulf of Mexico)
The Rocky Mountains they they a load of sediment
were growing were eroded contributed was deposited
rapidly T:at this time
a load of sediment that was deposited into the Gulf of Mexico T:as they were eroded
into the Gulf of Mexico