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Age of seafloor rock and sediment increases with distance from the oceanic ridges.
age increases
the sea surface level varies with seafloor depth
Rocks in the seafloor are moving one place to another
age increases
Seafloor spreading and subduction
In oceanography, calcite compensation depth refers to the depth at which the rate of carbonate accumulation equals the rate of carbonate dissolution. It is an important concept in the study of paleoclimate and the components found in seafloor mud.
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The oldest rock are up to 125 million years old.
the density of sea increases with depth
the density of sea increases with depth
The primary change is of pressure, increasing at 1 Bar per 10 metres of depth; but in the oceans, the temperature and salinity also alter in subtle ways.