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Hardground: A limestone that has been cemented on the seafloor. Its surface may be encrusted, discolored, case-hardened, bored, and solution-ridden. (Definition from Jackson, J.A., ed., 1997, Glossary of geology [4th ed.]: Alexandria, Va., American Geological Institute, 769 p.)

 

 

 

 

 

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Last modified September 12, 2008 .