Crushed stone resources of the Blue River Group (Mississippian) of Indiana (1978)

Item Number: B52
Map Scale: 1:316,800
Price $7.00
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Authors: Donald Carr
Richard Leininger
Margaret Golde

ABSTRACT: Limestones of the Blue River Group (Mississippian age) exposed along the eastern part of the Illinois Basin are the most important source for crushed stone material in southern Indiana. These rocks are thin where exposed in Montgomery and Putnam Counties but thicken in a southerly direction to more than 500 feet in Crawford and Harrison Counties. The Blue River Group includes, in descending order, the Paoli, the Ste. Genevieve, and the St. Louis Limestones. Both the Paoli and Ste. Genevieve contain limestones with the chemical and physical properties necessary for premium crushed stone aggregate, but because the limestones of the St. Louis contain appreciable amounts of chert, silt, and clay in many places, they generally make inferior aggregate. Some high-calcium limestones of the Paoli and Ste. Genevieve are thick enough to be quarried for flux stone, cement raw materials, and other special purposes. Chemical analyses of more than 2,000 samples and physical tests of more than 300 samples give an indication of the quality of Blue River rocks at different locations and provide information to assist in exploring for new quarry sites.



Carr, D. D., Leininger, R. K., Golde, M. V. 1978,  Crushed stone resources of the Blue River Group (Mississippian) of Indiana: Indiana Geological Survey Bulletin 52, 225 p., 11 fig., 1 pl.


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Keywords: Ste. Genevieve Limestone, Paoli Limestone, crushed stone, industrial minerals, Blue River Group, Mississippian, St. Louis Limestone

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