02231cam a22003373u 450000100060000000300070000600500170001300600020003000700050003200800410003701000140007804000110009204100170010305000070012010000370012724500420016426400510020630000470025733600260030433700260033033800360035649000610039250000310045350800910048452011130057553400450168865300240173365300320175783000610178985600430185065704UtSlPG20260610134521.0mcr n260607r2021||||utu|||||o|||||||||||||| d  aa62009011  aUtSlPG 7aen2iso639-1 4aQE1 aIllinois State Geological Survey10aGuide to the Geologic Map of Illinois 1aSalt Lake City, UT :bProject Gutenberg,c2021  a1 online resource :bmultiple file formats  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier1 aIllinois State Geological Survey. Educational series, 7.  aRelease date is 2021-06-26  aStephen Hutcheson and the Online Distributed Proofreading Team at https://www.pgdp.net  a"Guide to the Geologic Map of Illinois" by Illinois State Geological Survey is a scientific publication produced in the early 1960s. This educational guide focuses on the geology of Illinois, particularly highlighting the state's geologic features and formations resulting from past glacial activities, offering insights into the complex history of the earth's geology in this region.  The content of the book elaborates on various geological processes, specifically detailing the effects of glaciation on Illinois's landscape around 15,000 years ago. It discusses the types of rocks found beneath the glacial drift, the layers of bedrock, structural geology, and economic geology, including the state's mineral resources such as coal, petroleum, limestone, and dolomite. The guide provides a detailed mapping of these resources, accompanied by explanations of the geological history and the methods used in geological exploration. Overall, it serves as a foundational resource for understanding the geological makeup of Illinois and its historical significance. (This is an automatically generated summary.)  nOriginal publication data not identified  aGeology -- Illinois  aGeology -- Illinois -- Maps 0aIllinois State Geological Survey. Educational series, 7.40uhttps://www.gutenberg.org/ebooks/65704