Throughout their relatively short history, the older underlying delta sediments had been squeezed and compressed under the weight of new sediments deposited each year by the river, in a process known as subsidence.
(the older underlying delta sediments; had been squeezed; L:Throughout their relatively short history) (the older underlying delta sediments; compressed; L:under the weight of new sediments) (new sediments; deposited; T:each year; by the river) (a process; known; as subsidence)
the older underlying delta sediments the older underlying delta sediments new sediments a process
had been squeezed compressed deposited known
L:Throughout their relatively short history
L:under the weight of new sediments
T:each year by the river
as subsidence