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Central Minnesota contains an ancient fault system from the Penokean orogeny. The geology of Minnesota comprises the rock, minerals, and soils of the U.S. state of Minnesota, including their formation, development, distribution, and condition. The state's geologic history can be divided into three periods.
Minnesota valley formation by the Minnesota River Basin Data Center. Geology of Minnesota by the Minnesota Department of Natural Resources. (Cached version.) Geological and glacial history of Minnesota by the Minnesota Geological Survey. Wright, W. E. (1990). Geologic History of Minnesota Rivers. Minnesota Geological Survey, Educational Series ...
Pages in category "Geology of Minnesota" The following 34 pages are in this category, out of 34 total. ... Minnesota Geological Survey; Glacial history of Minnesota;
The Minnesota Geological Survey was established by the Minnesota State Legislature in 1872 as the Geological and Natural History Survey of Minnesota, and Newton Horace Winchell was appointed as its director. [2]
The second phase involved a microcontinent called the Marshfield terrane, which today forms parts of Wisconsin and Minnesota. [3] The episode lasted about 10 million years. Hundreds of millions of years later, the Keweenawan Rift occurred in the same area creating the basin that would eventually become Lake Superior .
Geologically, the Mesabi, Gunflint, and Cuyuna Ranges in Minnesota belong to the Paleoproterozoic Animikie Group, while the Vermilion Range is Neoarchean. [8] The geologic history of the formations containing iron are typical of banded iron formations worldwide.
Ecoregions in Minnesota were largely influenced by the unique glacial history, geology, soil type, land use, and climate of the state. The United States Environmental Protection Agency , Minnesota Department of Natural Resources , and World Wildlife Fund maintain separate classifications of the state's ecoregions.
The geologic record of Minnesota spans from Precambrian to recent with the exceptions of major gaps including the Silurian period, the interval from the Middle to Upper Devonian to the Cretaceous, and the Cenozoic. [1] During the Precambrian, Minnesota was covered by an ocean where local bacteria ended up forming banded iron formations and ...