Project Gutenberg 2021-06-26 Public domain in the USA. 456 Illinois State Geological Survey Illinois. Board of Natural Resources and Conservation. State Geological Survey Illinois. Department of Energy and Natural Resources. State Geological Survey Illinois. Department of Registration and Education. Division of the State Geological Survey Illinois Institute of Natural Resources. State Geological Survey Division ISGS University of Illinois (Urbana-Champaign campus). State Geological Survey a62009011 Guide to the Geologic Map of Illinois Illinois State Geological Survey. Educational series, 7. Stephen Hutcheson and the Online Distributed Proofreading Team at https://www.pgdp.net "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.) Reading ease score: 57.7 (10th to 12th grade). Somewhat difficult to read. en Geology -- Illinois Geology -- Illinois -- Maps QE Text Category: Science - Earth/Agricultural/Farming 80887 2025-09-26T06:09:26.156688 text/html 52967 2024-10-18T14:34:20 text/html 3350783 2025-09-26T06:09:41.591681 application/epub+zip 3349608 2025-09-26T06:09:33.684708 application/epub+zip 88592 2025-09-26T06:09:27.708696 application/epub+zip 3088416 2025-09-26T06:09:43.708648 application/x-mobipocket-ebook 3076627 2025-09-26T06:09:35.744722 application/x-mobipocket-ebook 113936 2022-09-29T14:56:55.477890 application/x-mobipocket-ebook 50645 2025-09-26T06:09:25.521729 text/plain; charset=us-ascii 30771 2024-10-18T14:34:20 text/plain; charset=us-ascii 16267 2025-09-26T06:09:43.843604 application/rdf+xml 15357 2025-09-26T06:09:27.849706 image/jpeg 2594 2025-09-26T06:09:27.779685 image/jpeg 13132422 2025-09-26T06:09:26.282713 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog