News Release 348

Department of Natural Resources publishes five new geologic maps

Volume 38-348 (For Immediate Release)
Contact: Hylan Beydler

ROLLA, MO, JUNE 16, 2010 -- Five new geologic maps are available for portions of Callaway and Osage counties according to the Missouri Department of Natural Resources' Division of Geology and Land Survey. The department used the STATEMAP component of the National Cooperative Geologic Mapping Program, which is co-funded by the U.S. Geological Survey, to develop the maps.

Areas of map coverage include Mokane and Luystown. Bedrock and surficial material maps are available for Mokane West and Luystown quadrangles. A surficial material map is also available for Mokane East.

“The primary objective of this national effort is for each state to establish the geologic framework of areas that are vital to the welfare of our citizens,” said Joe Gillman, state geologist and division director. Each state geologist determines the state's mapping priorities in consultation with a state mapping advisory committee. These priorities are based on state requirements for geologic map information in areas of multiple-issue need or compelling single-issue need and in areas where mapping is required to solve critical Earth science problems.

“Geologic maps are used in a variety of applications including agriculture, water availability, earthquake and other natural hazard evaluation, industrial and commercial development siting, waste disposal facilities, economic assessment of our natural resources, and various planning needs critical to infrastructure,” Gillman said. The division has produced statewide geologic maps at a variety of scales for more than 100 years.

Different maps are produced for a variety of purposes. Bedrock geologic maps provide information about the layering of bedrock units and faulting, folding or deformation that may be present. Bedrock maps provide information about the distribution and structure of consolidated rock such as limestone, sandstone, coal and granite. Surficial material maps focus on all of the deposits above bedrock. This includes soil, but it also includes up to several hundred feet of deeper unconsolidated material such as residuum, till and alluvium.

Cheryl Seeger, chief of the department’s geologic investigations unit said, “Our mapping geologists gather geologic data by field investigation of rock outcrops, examination of road cuts and quarries, and by drilling exploratory boreholes. Then, by combining the new field data with existing well log files, rock core samples housed in our McCracken Core Library and Research Center, along with other stratigraphic data, we are able to create geologic maps. The 1:24,000 scale map is an excellent source of information for making decisions about construction of houses, commercial buildings, bridges, dams, other land use planning, in addition to other areas critical to infrastructure."

For more information or to purchase Missouri maps, visit the department’s website Once there, type geologic map in the search field, or you may search by quadrangle name. Those interested may also call 800-361-4827 or 573-368-2125 or visit the publications desk at the department's Division of Geology and Land Survey, 111 Fairgrounds Road in Rolla. For more information about Missouri STATEMAP projects visit the department’s website at


Editor: Photo is available at

Caption: Geologists with the Division of Geology and Land Survey, DNR, located in Rolla, have produced statewide geologic maps at a variety of scales for more than 100 years.