sedimentary
Limestone with Stylolites
Calcareous sedimentary rock (CaCO3)
Hardness of 3 on the Mohs scale, typically off-white, gray, or buff in color, dull to earthy luster, fine-grained to microcrystalline structure, and displays distinct dissolution seams (stylolites).
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Physical properties
Hardness of 3 on the Mohs scale, typically off-white, gray, or buff in color, dull to earthy luster, fine-grained to microcrystalline structure, and displays distinct dissolution seams (stylolites).
Formation & geological history
Formed through the accumulation and compaction of organic remains such as shells, coral, and algal debris in marine environments, often over millions of years during the Paleozoic or Mesozoic eras.
Uses & applications
Used extensively in construction as dimension stone, in the production of Portland cement, as road aggregate, and in agricultural lime.
Geological facts
Stylolites visible on the surface are pressure-solution features created when parts of the limestone dissolved under the immense weight of overlying rock layers.
Field identification & locations
Can be identified by its reaction to dilute hydrochloric acid (effervescence) and by observing bedding planes and fossil fragments. Found globally in sedimentary basins.
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