Marble is the metamorphosed form of, for 10 points, what sedimentary rock consisting of calcium carbonate?
Tufa is a porous variety of this substance that is also known as travertine. Karst topography develops as this substance is weathered away in water or a weak acid solution. One way it is formed is from the crushed (*) bodies of marine creatures as they are eroded against seashores. Marble is the metamorphosed form of, for 10 points, what sedimentary rock consisting of calcium carbonate?
Tufa is a porous variety of this substance that is also known as travertine.
limestone