State by State
Arkansas
- Specimen Number
3
- Description
Cut block of coarse-grained, possibly oolitic limestone. Classified as a grainstone, defined as a non-muddy, clast-supported sandstone consisting limestone (calcite/arragonite) grains, Pore spaces filled by light-colored lime cement. Massive and uniform in appearance. Fizzes with weak acid.
- Classification
Sedimentary. Limestone. Grainstone.
- Location & Occurrence
Likely from northern Arkansas, a suggestion by state survey staff. Paleoenvironment of tropical-subtropical shallow seas on edge of carbonate bank with strong wave action.
- Geological Age
Unknown
- Geoheritage
Such uniform limestones are commonly quarried for dimension stone because the rock is fairly soft and easily cut into the desired shape. The stone crumbles in a carbonized atmosphere.
- Links
Link to State Geological Map from USGS. Link to State Geological Survey.
- Other
See separate list for acknowledgements.
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![Specimen stone for Alaska.](https://earthsciences.media.uconn.edu/wp-content/uploads/sites/3541/2022/10/03a_Arkansas_210927a137.jpg)
![Alt Text for Image Here](https://earthsciences.media.uconn.edu/wp-content/uploads/sites/3541/2022/10/03b_Arkansas_210927a140.jpg)
![Closeup](https://earthsciences.media.uconn.edu/wp-content/uploads/sites/3541/2022/10/Arkansas-OutlineUS.jpeg)
![Alt Text for Image Here](https://earthsciences.media.uconn.edu/wp-content/uploads/sites/3541/2022/10/Arkansas-USGS-OFR-2005-1351.jpg)