~3 min read
Encyclopedic overview
Maps of transgression and regression at the Belgian coast
A marine transgression is a geologic event where sea level rises relative to the land and the shoreline moves toward higher ground, resulting in flooding. Transgressions can be caused by the land sinking or by the ocean basins filling with water or decreasing in capacity. Transgressions and regressions may be caused by tectonic events like orogenies, severe climate change such as ice ages or isostatic adjustments following removal of ice or sediment load.
Excerpted from Wikipedia’s “marine transgression” article, available under the CC BY-SA 4.0 licence.