DACIAN BASIN - GeoEcoMar

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Chapter 10. History of the Dacian Basin Sediment Accumulation
The western sedimentary area was a smaller depocenter of the Dacian Basin,
representing approximately one third of the eastern accumulation area.
The eastern Dacian Basin depocenter was the most active sediment accumulation
area of the Dacian Basin. Due to high subsidence this depocenter served as a
huge sediment trap storing Late Neogene sediments with total thickness of several
kilometers.
The detrital material which exceeded the storing capacity of the eastern depocenter
was progressively transferred down slope toward the sediment deficient
area between the eastern and western depocenters.
The sediment transport pattern of the brackish-marine Dacian Basin includes
three segments: (1) the transversal, turning longitudinal sub-Carpathian littoral current
system, (2) the longitudinal sediment transport in the axial zone of the deepening
trough and (3) the large scale prograding system, in the deepest western
end of the basin.
During the existence of the Dacian Basin trench the bulk of Carpathians-derived
sediments were transported longitudinally along the trench elongation and
parallel to the orientation of the mountain range. After the sedimentary trench of
the Dacian Basin was completely filled (by the end of the Dacian time), the sediments
supplied by the Carpathians continued to accumulate at the base of the
mountain. The new paleogeography existed after the filling of the brackish-marine
trench allowing the direct southern transfer of the sediments, transversally from
the Carpathians.