flux constant/no sea level change
Simple model of a basin cross-section with constant sea level and
a steady supply of sediment coming in from the left (for example,
a river). At step 1, the flat line marks sea level and the sloping line
is the sea floor/land surface, with the shore line where the two meet.
At step 2, some sediment has flowed in. The color is controlled by the
depth of water where the sediment was deposited. Orange is shallow water.
Yellow is slightly deeper, and green marks deep water deposits. In this
example, with siliciclastic deposition the orange might be sandstone
grading into shale (green). At step 3, more sediment has come in and the
sea floor has subsided. This continues at step 4. Time steps are of equal
length and are marked by black lines ("chronostratigraphic surfaces"),
which roughly approximate bedding surfaces.
