Carbonate buildup or a patch reef. Dark and rough top surface and irregular edges.
The dip map of the M1 carbonate buildup exhibits
dark surface areas and irregular edges, suggesting
karst features and mechanical fractures, respectively.
The isopach map of the M1 carbonate buildup
is even more complex, suggesting localized carbonate
growth and weathering. The high but variable
seismic amplitude of the top surface of the M1 carbonate
buildup may also suggest weathering. The carbonate buildup can contain bbl of liquid.