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- Iowa’s bedrock, glacial deposits and soils are the rich legacy of a billion years of earth history. They contain minerals, energy resources, and groundwater.
www.iowadnr.gov/Conservation/Geology
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What is the Iowa Geological Survey?
Many people are introduced to the field of geology through the fun of searching for and collecting minerals. Beautiful varieties can be found in Iowa’s sedimentary rock strata, outcropping in road cuts, quarries, strip mines, and along stream banks or valley sides.
Aug 4, 2022 · Iowa is a surprisingly diverse state when it comes to minerals and gems that can be pulled from the earth. There are a lot of interesting things hidden in the creeks and bedrock of the state, you just need to know what to look for and where to look.
Jan 11, 2024 · As you delve into the world of rocks and minerals found in Iowa, it’s impossible not to be captivated by its sheer diversity. Landmarks like the Devonian Fossil Gorge, Maquoketa Caves State Park, and the Keokuk area along the Mississippi River, stand as testaments to this geological bounty.
Iowa’s earth-related issues include land-applied agricultural chemicals, areas where groundwater supplies are vulnerable to contamination, areas of shallow limestone (karst conditions), mineral resource reserves, adequate groundwater supplies, and disposal of waste materials.
Quarrying limestone and dolomite for dimensional stone and cement products has been a staple of Iowa’s mining industry for more than a century. Iowa is also one of the top 10 gypsum-producing states in the United States. However, the future of mining in Iowa may be locked in Precambrian-age crystalline rocks buried deep beneath northeastern Iowa.
Iowa’s land has formed through a slow and never-ending process. Geologists believe that earthquakes, volcanoes, floods and ice helped form and change Iowa for over 1 billion years. These processes formed the base for Iowa’s farming success, mining industries and even some art forms.
Iowa’s bedrock, glacial deposits and soils are the rich legacy of a billion years of earth history. They contain valuable minerals, energy resources, and ample supplies of groundwater.
