Layers gradually compact, then fold, then fault. Oil migrates into traps created by the folds from layers below. Porosity and vein formation. Shows ship collecting seismic reflection information from sea floor. Seismic profile is generated that is used to make a cross section of rock layers and oil hidden beneath the subsurface.
Oil rigs drill and remove hydrocarbons.
This site is a cooperative endeavor of the US Geological Survey Western Earth Surface Processes Team and the National Park Service .