Sand and gravel: Gift of the Ice Age glaciers (IM-08)
Figures compiled by the Indiana Geological Survey reveal that nearly
$40 million worth of sand and gravel are produced annually in Indiana.
The industry began during the 1830's when Hoosiers realized the vital
need for improved roads. For many years farmers "worked out the road
tax" by hauling wagonloads of gravel from nearby pits, scattering it
on the roads, and maintaining and improving the roads. Even today much
of our sand and gravel is used as road metal or as aggregate for
concrete and bituminous road materials.
Most of Indiana's sand and gravel is found in the complex mass of
rock materials carried in and dropped by the Ice Age glaciers.
Except for terraces and bars in river valleys, almost all of
Indiana's gravel deposits are found in the northern two-thirds
of the state.
Our Hoosier State Beneath Us: